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Preview: New from Electronics Infoline

Electronics Infoline



A giant collection of electronics projects and schematics on the web!



Last Build Date: Mon, 29 May 2017 03:50:16 +0000

 



Build an AM, CW and SSB Regenerative Receiver for Amateur Radio

Sun, 28 May 2017 22:51:00 +0000

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Pinned onto QRPHB

  In this article, Vasily Ivanenko @ QRP Home Builder shows you how to build a HF or VHF Regenerative Receiver for Amateur Radio use. He called it Regen #5. You can build this on general double-sided PCB and use to receive AM, CW as well as SSB transmission. The assembly of the receiver looks a […](image)



Back to the Future – Build your Flux Capacitor

Thu, 25 May 2017 20:54:47 +0000

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Pinned onto Open Electronics

In this article, Boris from Open Electronics will show you a modern take on the equipment that enabled time travel in Back to the Future. Those who have a few “decades” of ageing on their shoulders should know Back to the Future (but the younger ones as well, since they could know and see it thanks […](image)



First Project with WireFrame FPGA Board LED Blinking Test – Binary Counter with VerilogHDL, Xilinx ISE Tutorial

Wed, 17 May 2017 20:04:00 +0000

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Pinned onto Circuitvalley

This article is goint be very very  basic , like how to create xilinx ISE project and  write a little binary counter in verilogHDL , how to wireup the module’s port to I/O line of the FPGA . and finally implement the module , we will also simmulate the design with the help of verilog […](image)



Most effective PCB Prototyping Techniques for Better Performance

Mon, 15 May 2017 05:33:23 +0000

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Pinned onto Articles

This is a continuation of our article How to Design a great PCB or Printed Circuit Board If you have not yet seen it, you should consider reading this to get a overall grasp of the whole process of any electronics DIY or Professional Projects from designing to finished products. In this continuation article, you […](image)



Clear Shot: Which is The Best Digital Camera Under $ 200?

Thu, 11 May 2017 06:34:22 +0000

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Pinned onto Reviews

Digital cameras are dime-a-dozen nowadays. Ranging from cheap ones to more expensive professional products, digital cameras have changes a lot since they were first introduced. For someone with a budget, you’ll probably be looking for the best digital camera under $ 200.   Two hundred dollars is a nice cut-off point. It is neither too […](image)



A Custom Enclosure for the Android Bluetooth Reflow Controller

Tue, 09 May 2017 02:00:52 +0000

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Pinned onto Andys Workshop

It’s a good nine or ten months now since I published my design for a reflow oven controller that uses an Android app for display and control. I knew at the time that I would need an enclosure for this controller and not just because of the obvious hazards of having exposed mains voltages but […](image)



Adding Internet connectivity to Arduino boards and apps with the YUN Shield

Sun, 07 May 2017 20:26:00 +0000

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Pinned onto Open Electronics

What if we have already developed an Arduino application and we want internet connectivity for it? Yun shield is the answer.  Yun shield provides Internet connectivity for all Arduino boards. It features the same connectivity functions implemented on Arduino Yun. Yun shield runs the OpenWrt GNU / Linux operating system, specially designed to manage internet connectivity. It’s […](image)



ESP8266 Programming Basics

Sun, 07 May 2017 19:30:08 +0000

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Pinned onto Squix Techblog

In this post we will have a look at the building blocks of an Arduino sketch. This will help you to build your own sketch quickly. The post covers the serial console, digitalRead and digitalWrite, interrupts, analogRead and finally WiFi, http and https. This text is ...

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Presepino: the nativity scene with Arduino

Sat, 06 May 2017 21:07:11 +0000

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Pinned onto Open Electronics

A light system, capable of simulating the alternation of night and day, that will make your nativity scene – be it a small or a big one – even more realistic. Our circuit is capable of piloting four light loads, corresponding to the daylight, to the brilliance of the stars, to the household hearths, and […](image)



Examining the Core Memory Module inside a vintage IBM 1401 Mainframe

Fri, 05 May 2017 21:11:00 +0000

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Pinned onto Ken Shirrif

The IBM 1401 mainframe computer was announced in 1959 and by the mid-1960s had become the best-selling computer, extremely popular with medium and large businesses because of its low cost. A key component of the 1401’s success was its 4,000 character core memory, which stored data on tiny magnetized rings called cores.   The 4000-character […](image)



The Drink Maker: Open Sourcing your Cocktail!

Thu, 04 May 2017 23:04:27 +0000

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Pinned onto Open Electronics

  Based on RandA, this machine can prepare cocktails, by drawing the quantities from dedicated dispensers, according to recipes dowloaded from the webpage from which the drink has been requested. Learn more in this first post. If one has the possibility to relax and maybe doesn’t have to get behind the wheel for a while, […](image)



Understanding silicon circuits: inside the ubiquitous 741 op amp

Wed, 03 May 2017 19:18:00 +0000

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Pinned onto Ken Shirrif

The 741 op amp is one of the most famous and popular ICs[1] with hundreds of millions sold since its invention in 1968 by famous IC designer Dave Fullagar. In this article, I look at the silicon die for the 741, discuss how it works, and explain how circuits are built from silicon. The 741 […](image)



ArdIR a programmable and remotely manageable Infrared control with Arduino

Wed, 03 May 2017 13:16:48 +0000

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Pinned onto Open Electronics

This project presents a universal infrared remote control that can also be managed via Internet, based on RandA (supplied with a dedicated shield) and on Raspberry Pi2. Despite the fact that still only a few people take advantage of the “smart” revolution in home automation (intended as a complete and integrated automation and computerization of […](image)



Die photos and analysis of the revolutionary 8008 microprocessor, 45 years old

Sun, 30 Apr 2017 19:10:00 +0000

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Pinned onto Ken Shirrif

Intel’s groundbreaking 8008 microprocessor was first produced 45 years ago.1 This chip, Intel’s first 8-bit microprocessor, is the ancestor of the x86 processor family that you may be using right now. I couldn’t find good die photos of the 8008, so I opened one up and took some detailed photographs. These new die photos are […](image)



Bridge Monitoring System using Wireless Sensor Network

Wed, 26 Apr 2017 21:24:55 +0000

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Pinned onto Zx Lee

It’s been a long time since I last work on any hobby project and update on my blog. Recently, I completed a mini project together with two of my friends. So I am going to take this opportunity to share... Continue Reading →(image) (image)



ESP8266: Turn a $9 Body Scale into a Smart Scale – Part 1

Wed, 26 Apr 2017 14:02:45 +0000

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Pinned onto Squix Techblog

In this project I will show you how you can build yourself a fancy Withings-like body scale. I divided the article into two parts: Part 1 describes the hardware hack and Part 2 the software. In this project I used a cheap scale I bought in the local super market for 9 Swiss Francs (which is currently […](image)



Reverse engineering the popular 555 timer chip (CMOS version)

Tue, 25 Apr 2017 18:34:00 +0000

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Pinned onto Ken Shirrif

  Above 555 chip photo credit Windell Oskay This article explains how the LMC555 timer chip works, from the tiny transistors and resistors on the silicon chip, to the functional units such as comparators and current mirrors that make it work. The popular 555 timer integrated circuit is said to be the world’s best-selling integrated […](image)



FISHINO becomes Mega

Tue, 25 Apr 2017 13:08:49 +0000

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Pinned onto Open Electronics

  The Fishino version of the powerful and popular board, Arduino MEGA: a revised  hardware with a different power section.   In this article we will present Fishino MEGA. It is a board that is compatible with Arduino Mega. In its hardware we implemented a significant innovation: the possibility to have it battery powered. As […](image)



Gesture recognition with Arduino

Sun, 23 Apr 2017 08:32:01 +0000

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Pinned onto Open Electronics

  With the board described here, we will interface the electrode board for gesture recognition to Arduino.   To take advantage of the potential of the MGC3130 integrated circuit, we thought of developing a new electrode having the possibility to connect (in addition to our demo board, that we saw in the previous episode), even […](image)



Output Inductor Calculation for SMPS Converters using the Forward, Push-Pull, Half-Bridge and Full-Bridge Topologies

Sun, 09 Apr 2017 21:14:00 +0000

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Pinned onto Tahmid's Blog

An output inductor is found at the output of every forward-mode converter. Converters utilizing the forward, push-pull, half-bridge and full-bridge topologies are all forward-mode converters. So, calculation of the output inductance follows the same methodology for all four of these popular topologies. The purpose of the output inductor is to store energy for the load […](image)



Inside Card Sorters of 1920s – Data Processing with Punched Cards and Relays

Fri, 07 Apr 2017 19:31:00 +0000

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Pinned onto Ken Shirrif

Punched card sorters were a key part of data processing from 1890 until the 1970s, used for accounting, inventory, payroll and many other tasks. This article looks inside sorters, showing the fascinating electromechanical and vacuum tube circuits used for data processing in the pre-computer era and beyond. Herman Hollerith invented punch-card data processing for the […](image)



AC Power Control with Thyristor – Phase Angle Control using triac with PIC16F877A

Thu, 06 Apr 2017 23:56:00 +0000

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Pinned onto Tahmid's Blog

Principle of Phase Angle Control Top – Output Voltage Bottom – Gate Drive Signal Image source: Wikipedia (http://en.wikipedia.org/wiki/File:Regulated_rectifier.gif) The photo above clearly illustrates phase angle control: output voltage controlled by the gate drive signal applied to a thyristor. What is phase angle control? That is what I’m going to talk about in this article. Phase […](image)



Jupiter Receiver Experiment notes

Wed, 05 Apr 2017 21:12:00 +0000

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Pinned onto QRPHB

Every builder, I suppose, learns in their own way — I believe that making and measuring real circuit’s yields dividends par none.  Hats off to the SPICE kings — simulation might be the next best thing for those who lack the instruments needed to measure data and make comparisons — and for getting starting values […](image)



An Open Source Motor Controller for everyone

Mon, 03 Apr 2017 21:43:23 +0000

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Pinned onto Open Electronics

It is open source and based upon the ATmega32U4 microcontroller, and provided with drivers for two DC brush motors and a stepper motor. It receives commands via USB or serial ports, or via the I²C bus. For those dealing with robotics, one of the problems to solve is the management of the motors used for […](image)



How to Open a Microchip and what’s inside?

Wed, 29 Mar 2017 04:34:10 +0000

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Pinned onto Articles

How to «open» microchip and what's inside? Microchips - are indeed can be considered a black box - as long as it's working you normally don't look inside. But what if you want to? Today we'll show how to "open" chips and what's inside. WARNING! All operations with concentrated (and especially hot) acids are extremely [...](image)



Die Photos and Analysis of the LM108 Operational Amplifier

Tue, 28 Mar 2017 16:25:00 +0000

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Pinned onto Ken Shirrif

The LM108 op amp is an interesting chip to examine under a microscope because it uses special superbeta transistors for high performance. Photos of the die reveal the tiny circuitry of the chip as well as unused components that make the chip more complex than necessary. Surprisingly, these extra components allow the same die to […](image)



Gesture recognition with Raspberry Pi and GestIC

Sun, 26 Mar 2017 11:45:55 +0000

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Pinned onto Open Electronics

  Let’s couple the 3D gesture recognition electrode to Raspberry Pi, in order to create an application with which the pictures can be scrolled on a HDMI screen, by means of gestures.   In an another post we described a new GestIC electrode, which has been developed and created for the purpose of interfacing the Arduino Uno […](image)



Macbook charger teardown: The surprising complexity inside Apple’s power adapter

Fri, 24 Mar 2017 06:34:00 +0000

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Pinned onto Ken Shirrif

Have you ever wondered what’s inside your Macbook’s charger? There’s a lot more circuitry crammed into the compact power adapter than you’d expect, including a microprocessor. This charger teardown looks at the numerous components in the charger and explains how they work together to power your laptop. Inside the Macbook charger. Many electronic components work […](image)



Reverse engineering the ARM1, ancestor of the iPhone’s processor

Tue, 21 Mar 2017 18:13:00 +0000

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Pinned onto Ken Shirrif

Almost every smartphone uses a processor based on the ARM1 chip created in 1985. The Visual ARM1 simulator shows what happens inside the ARM1 chip as it runs; the result (below) is fascinating but mysterious.[1] In this article, I reverse engineer key parts of the chip and explain how they work, bridging the gap between the […](image)



The ARM1 processor’s flags, reverse engineered

Tue, 21 Mar 2017 16:26:00 +0000

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Pinned onto Ken Shirrif

This article reverse-engineers the flag circuits in the ARM1 processor, explaining in detail how the flags are generate, controlled, and used. Condition flags are a key part of most computers, since they allow the computer to change what it does based on various conditions. The flags keep track of conditions such as a value being […](image)



The SEPIC switching converters

Tue, 21 Mar 2017 09:44:40 +0000

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Pinned onto Open Electronics

  The SEPIC configuration, a very useful one, is used in modern converters for mixed supply systems. Thanks to the availability of an always growing number of specialized integrated circuits that realize – with the help of very few external components – some complete and valid voltage regulators, today the switching technology is the most […](image)



Let’s Build an Open Source Quadcopter – Part 1

Mon, 20 Mar 2017 09:16:11 +0000

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Pinned onto Open Electronics

  Nowadays most people call “drone” something that is, actually, a multicopter whose most common form is “incarnated” by the quadcopter. Generically, a drone is a robot, but war zones news accustomed us to use the word “drones” to describe those aircrafts that are capable of autonomous flight. The related technology was born – as […](image)



Let’s Build an Open Source Quadcopter – Part 2

Mon, 20 Mar 2017 08:29:48 +0000

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Pinned onto Open Electronics

  Let’s complete the construction of our aircraft and test it.   Now that you have physically created the quadcopter – according to the indications supplied in the first installment of this article (published here) – you may move on to the operational stages, and see as a first thing the commands available for our […](image)



USB HID device development on the STM32 F042

Sat, 11 Mar 2017 10:07:00 +0000

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Pinned onto Andys Workshop

The STM23 F042 series is ST’s cheapest route into USB device programming for the F0 series of STM32 microcontrollers. In hacker-friendly units of one you can buy an STM32F042F6P6 (48Mhz, 32Kb flash, 6Kb SRAM, TSSOP20) for £1.47 at Farnell today. STM32F042 TSSOP20 0.65mm pitch package If you need more IO pins then there are QFP […](image)



Open Wheels 2 – an all-in-one board to control any of your Robotic Projects

Fri, 10 Mar 2017 12:16:25 +0000

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Pinned onto Open Electronics

A scalable board to prototype motion control applications for automatic balanced robot or any other robot on wheels.   It was the 2013 when we presented a control board to make a clone of the famous SegWay: the OpenWheels project. In recent years, the focus on systems to stabilize unstable ones grew up sensibly. Just look […](image)



The ESP WiFi Shield: the best value for money and low energy consumption

Fri, 10 Mar 2017 07:42:27 +0000

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Pinned onto Open Electronics

It supplies Arduino with the WiFi connectivity and the external memory support on a SD-Card; it is based on a new module that is completely programmable, and offers the best value for money, with a very limited energy consumption that make it ideal for battery applications.   It is not the first time that we […](image)



A high current power supply built around a server voltage regulator

Thu, 09 Mar 2017 21:30:05 +0000

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Pinned onto Andys Workshop

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Regular readers of this blog will have already seen the article that I published about 4 months ago where I attempted to reverse engineer a voltage regulator module originally designed to fit into a Dell server. The theory was that these would be high quality, stable and robust designs that could prove useful if I […](image)



An open source 3D Scanner made with Raspberry Pi

Thu, 09 Mar 2017 13:30:50 +0000

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Pinned onto Open Electronics

By making use Raspberry Pi, we created an easy to build 3D scanner to be used for the acquisition of three-dimensional models via a video camera and a laser. 3D printing keeps on establishing itself, mostly thanks to the availability of more user-friendly 3D printers and price drops. Those who use a 3D printer do […](image)



Working with the Xilinx Virtex-E FPGA in a huge BGA package

Wed, 08 Mar 2017 20:35:44 +0000

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Pinned onto Andys Workshop

Let me see now, it must have been about two years ago when this story started. I was bored. I can’t remember why but when I’m bored I often surf ebay just to see what interesting bits and pieces are out there. Mostly it’s the same old stuff repeated over and over. Cheap bare PCB […](image)



Atmel AVR ATMega16 Interfacing WIth 16×2 char LCD

Sat, 04 Mar 2017 12:28:00 +0000

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Pinned onto Circuitvalley

An alphanumeric low cost LCD Display is very essential for may small and big projects to Display various type of information. Hitachi HD44780  Chipset based 16×2 char LCD is Really very cheap and easily available in the local market. Project Description:-   In this project we are going to learn various things about this chip set and displaying text on […](image)



AC Power Control with Thyristor – Pulse Skipping using triac with PIC16F877A

Fri, 03 Mar 2017 17:45:00 +0000

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Pinned onto Tahmid's Blog

Pulse Skipping Modulation Green – Input AC Yellow – Output AC after Pulse Skipping Modulation Pink – Gate Drive Signal   Pulse skipping modulation (PSM) or cycle control or burst fire is a method of power control where whole cycles of voltage are applied to the load. Here I’ll talk about PSM involving a thyristor, […](image)



Homemade ARM Board Running Linux with LCD – Part1 – Requirement Definition

Fri, 03 Mar 2017 15:57:00 +0000

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Pinned onto Circuitvalley

After quite lot of research through various online document and article and working with many different things, i have finally managed to get my first Linux capable ARM Cortex-A8 board up and running. making the board i hae faced many different kind of difficulties with different section. the board is Based to a ARM Cortex-A8 […](image)



Development Board for the STM32F042

Fri, 03 Mar 2017 15:23:43 +0000

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Pinned onto Andys Workshop

It’s been a while since I posted a new article, a delay at least partly due to me herniating a disc in my neck which left me completely unable to look downwards for any length of time and as you’ll know all too well you can’t work on circuit boards without peering down at them. […](image)



How Frequency Counter Works? And Build a Nanocounter using an FPGA, STM32 and a Bluetooth Android App

Fri, 03 Mar 2017 11:30:59 +0000

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Pinned onto Andys Workshop

Here we have a good example of how a requirement for a simple tool spirals out of control and spawns a project that takes months to complete and ends up dwarfing the project that it was originally expected to facilitate. You see, some time ago I was fiddling around with a project, something to do […](image)



Create a connected Fish Tank with Fishino

Fri, 03 Mar 2017 09:04:50 +0000

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Pinned onto Open Electronics

  Thanks to the Fishino board, we will make an existing fish tank smart, and we will place it in the IoT world.   By now, technology has made way in our daily life as well, and the home automation becomes every day more familiar: it is easy to think, for example, to a heating […](image)



Radionova 1 Frequency Synthesizer

Fri, 03 Mar 2017 04:46:00 +0000

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Pinned onto QRPHB

Frequency synthesizer for my Jupiter receiver — Радионова 1 —  [ Radionova 1 ] Greetings!  Most of my future homebrew radio projects will focus on building radio astronomy gear. Radio astronomy offers much fun + learning for the radio homebuilder — example topics include how to design and make antennas, LNAs, receivers, and frequency synthesizers […](image)



QRP WorkBench Line-in Audio Amplifier — Part 1

Wed, 01 Mar 2017 04:08:00 +0000

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Pinned onto QRPHB

Each Fall, I view design media and experiment @ AF to boost my skills and know-how. A bigger bench means room for more test equipment & accessories. Lately, I’m enjoying a bench activity maxima. In Part 1, I show a new line-in AF amplifier and in Part 2 some lessons learned about reducing noise and […](image)



Build This Dummy Load for Testing Transmitters

Wed, 01 Mar 2017 02:40:41 +0000

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Pinned onto Dangerous Prototypes

  A simple DIY dummy load project from Flathagen: I have created a simple 50 Ω dummy load to test transmitters. I also added a simple RF diode detector so I can measure the peak voltage, and calculate the power. The dummy load consists of eight 100 Ω resistors rated at 2 W so the […](image)



QRP WorkBench Line-in Audio Amplifier — Part 2

Tue, 28 Feb 2017 21:24:00 +0000

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Pinned onto QRPHB

Welcome to Part 2 I share some experiments, plus a few thoughts & observations from my QRP workbench. [A]  Some general points in AF design and breadboarding [1] Expect your amplifiers to oscillate and design to mitigate this. [2] Read your datasheet(s). [3] As possible, identify the frequency of any parasitic oscillations by measurement. If […](image)



How to Design a great PCB or Printed Circuit Board

Sat, 18 Feb 2017 05:16:44 +0000

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Pinned onto Articles

PCB or Printed Circuit Board is the physical implementation of an electronic circuit.  PCB design is a very specialized task, an art which can only be mastered through training or attained with experience. For a novice electronic hobbyist, laying out a PCB design might turn out to be a pretty daunting task, especially if the […](image)



Ten Amazing Things you can do with your Smartphone

Thu, 16 Feb 2017 18:06:35 +0000

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Pinned onto Articles

Advanced mobile phones are not made for simply messaging and phone calls; there are sure different things which they can perform for us. Even beside tasks which is common today, like social media browsing, chatting, browsing etc, they can perform even more. In this article, we shall look at some of them that is now possible […](image)



The Significance of X-rays in Medical Imaging – A Technical Overview

Wed, 15 Feb 2017 06:04:06 +0000

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Pinned onto Articles

This article will elucidate how a typical x-ray imaging device works and what are the various uses of x-ray imaging in the healthcare domain. You will learn the following:   What are X-rays? The Components of an X-ray Imaging Device Factors affecting x-ray Image Quality Applications of X-ray based Medical Imaging Comparison of x-ray imaging with […](image)



15 Arduino Projects that you will love to see

Sat, 11 Feb 2017 18:11:32 +0000

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Pinned onto Articles

Do you know Arduino borrowed its name from a nearby watering hole called Bar di Re Arduino where it was first developed in Italy? See this infographics first, created by Make: magazine. Click here if you want to see it full screen. Opens in a new window. It is 10 years after its appearance and by […](image)



Five Best Oscilloscopes for Your Home Lab

Sat, 11 Feb 2017 17:29:08 +0000

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Pinned onto Articles

As I had some core electronics subjects during my graduation, I worked on various electrical projects in my college lab. My eagerness led me to bring an Oscilloscope at my home for tinkering with the electrical circuits and devices. For setting up a personal lab at home, you should take some serious interest in choosing […](image)



A FPGA controlled RGB LED MATRIX for Incredible Effects – the Hardware

Fri, 10 Feb 2017 21:25:50 +0000

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Pinned onto Dangerous Prototypes

Boris Landoni from Open Electronics writes: In this post you will find  the description of a graphic display that uses a modular solution based on dot matrix blocks (in which each dot is a RGB LED), that are driven – via a specific bus – by a very powerful control board, that is entirely programmable […](image)



Using Nanotimers to Reduce IoT System Power Consumption by an Order of Magnitude

Fri, 10 Feb 2017 18:30:15 +0000

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Pinned onto EEWeb

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Reducing power and cost are often two of the most crucial factors when designing a battery-powered system. Reducing power consumption plays an in important role to extend system life by reducing overall system current. Hence, as a result, power reduction paves the way to cut down system cost by reducing the required battery capacity.

This concept readily applies to Internet of Things (IoT) systems and connected products such as wearables, wireless sensors and building automation systems. The life of the growing number of wireless sensor endnodes in the system all are constrained by one thing: power consumption of the end-node. Such sensor end nodes are typically powered by batteries, which last from several months to several years, depending on the power consumption of each end node. Here the “shelf-life” of a given sensor node is purely dependent on the lifetime of the battery. Though it is possible to simply replace the battery towards the end of the node’s life, it is not always practical to do so as the replacement itself can become an expensive “total cost of ownership."

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Replace a microwave’s beeping with the Windows XP startup sound

Fri, 10 Feb 2017 16:37:59 +0000

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Pinned onto Arduino Blog

When your microwave is done with its food, it generally beeps… and beeps… and beeps. Though you definitely want to know when your frozen burrito is edible, if you get to it right when it wants, things can get quite annoying. Tim Gremalm decided to do something about it, and replaced the buzzer in his appliance with an […](image)



A DIY Laser Scanning Microscope

Thu, 09 Feb 2017 19:03:56 +0000

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Pinned onto Arduino Blog

With a DVD pick-up, an Arduino Uno, a laser, and an LDR, Instructables user “Venkes” has managed to create a DIY Laser Scanning Microscope (LSM). A laser microscope works by shining a beam of light on a subject in an X-Y plane. The intensity of the reflected light is then detected by a photoresistor (or LDR) and recorded. […](image)



The Art (maybe a bit of Science too) of Troubleshooting!

Thu, 09 Feb 2017 18:23:00 +0000

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Pinned onto N6QW

Three Easy Steps To Troubleshooting!What are you kidding? There simply are no three easy steps. So get over it! That indeed is the heart of the problem --we all want to slide into home, take the easy way out, do the minimum work, send out 100 emai...(image)



Reverse-engineering the surprisingly advanced ALU of the 8008 microprocessor

Thu, 09 Feb 2017 16:57:00 +0000

Pinned onto Ken ShirrifA computer's arithmetic-logic unit (ALU) is the heart of the processor, performing arithmetic and logic operations on data. If you've studied digital logic, you've probably learned how to combine simple binary adder circuits to build an ALU. However, the 8008's ALU uses clever logic circuits that can perform multiple operations efficiently. And unlike most 1970's microprocessors, the 8008 uses a complex carry-lookahead circuit to increase its performance. The 8008 was Intel's first 8-bit microprocessor, introduced 45 years ago.1 While primitive by today's standards, the 8008 is historically important because it essentially started the microprocessor revolution and is the ancestor of the x86 processor family that are probably using right now.2 I recently took some die photos of the 8008, which I described earlier. In this article, I reverse-engineer the 8008's ALU circuits from these die photos and explain how the ALU functions. Inside the 8008 chip The image below shows the 8008's tiny silicon die, highly magnified. Around the outside of the die, you can see the 18 wires connecting the die to the chip's external pins. The rest of the chip contains the chip's circuitry, built from about 3500 tiny transistors (yellow) connected by a metal wiring layer (white). Die photo of the 8008 microprocessor, showing important functional blocks. Many parts of the chip work together to perform an arithmetic operation. First, two values are copied from the registers (on the right side of the chip) to the ALU's temporary registers (left side of the chip) via the 8-bit data bus. The ALU computes the result, which is stored back into the accumulator register via the data bus. (Note that the data bus splits and goes around both sides of the ALU to simplify routing.) The carry lookahead circuit generates the carry bits for the sum in parallel for higher performance.3 This is all controlled by the instruction decode logic in the center of the chip that examines each machine instruction and generates signals that control the ALU (and other parts of the chip). The Arithmetic-Logic Unit The 8008's ALU implements four functions: Sum, AND, XOR and OR. The Sum operation adds two 8-bit numbers. The remaining three operations are standard Boolean logic operations. The AND operation sets an output bit if the bit is set in the first AND the second number. OR checks if a bit is set in the first OR the second number (or both). XOR (exclusive-or) check[...]



ESP8266 LED lighting: QuinLED v2.6 PCB

Wed, 08 Feb 2017 22:18:18 +0000

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Pinned onto Dangerous Prototypes

Quindor designed and built an ESP8266 LED lighting QuinLED project with Dirty Board PCBs: It’s been a long time in the making but I’ve finally put the final touches on my newest revision of QuinLED! This makes it version 2.6 rev 1.00. Let’s check it out! This post is part of a series – The index for […](image)



Switching LVDS Graphics in a Laptop Computer

Wed, 08 Feb 2017 21:00:36 +0000

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Pinned onto EEWeb

Unlike desktop computers that have easily upgraded video graphics capabilities, laptops have historically been incapable of allowing such an up...(image)



Teleknitting: TV-based string art

Wed, 08 Feb 2017 20:04:24 +0000

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Pinned onto Arduino Blog

Have you ever wondered what television would look like if transposed onto string and wrapped around another object? If so, you’re not the only one, as shown in this teleknitting sculpture. Although it’s hard to say where the idea for this piece came from, Moscow-based artist ::vtol::’s teleknitting installation resolves a TV signal down into one […](image)



DIY Bubble Machine

Wed, 08 Feb 2017 12:33:00 +0000

Pinned onto FreetronicsThere is something highly satisfying about watching the awesome bubble machine belliedroot has created in action. The machine utilizes a number of servos to give the bubble “wand” panning and tilting capabilities so it can be dipped in bubble mixture and then moved in front of a fan which blows the bubbles out! This project is a great way to learn about how servo motors work with Arduino, and make something cool in the process. To find out more about how you can build your own bubble machine checkout the following link or the video below.    When you use motors in your Arduino project you will almost certainly need a H-Bridge motor driver. A H-Bridge allows you to easily control the direction of your motors from within your code. Our own Dual Channel H-Bridge Motor Driver Shield is a perfect solution to this problem, allowing you to drive two DC motors or a stepper motor. The Dual Channel H-Bridge Motor Driver Shield features PWM control, selectable current limits and a prototyping area to add your own parts. To find out more check out the Dual Channel H-Bridge Motor Driver Shield page. To keep up to date with the latest news, projects, product announcements  and to let us know what you think of this project follow us on Facebook and Twitter. [...]



Start your day with Nerf target practice!

Tue, 07 Feb 2017 21:07:49 +0000

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Pinned onto Arduino Blog

If you need motivation to actually wake up rather than sleep more, this Nerf target clock from “Normal Universe” could be a great solution! For many of us, traditional alarm clocks have given way to smartphones, but the concept is still the same: an annoying sound, followed by either waking up, or hitting the virtual snooze […](image)



Teardown of a Peaktech 6225A

Tue, 07 Feb 2017 20:00:43 +0000

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Pinned onto Dangerous Prototypes

Teardown and analysis of a Peaktech 6225A power supply from ElectroBob: I got a Peaktech 6225A power supply to power some things, as it seemed like a good deal, going beyond what one might find normally in these types of supplies: more display resolution and supposedly, lower noise. For this price, this supply is a good […](image)



Door/Window alarm circuit

Tue, 07 Feb 2017 15:49:19 +0000

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Pinned onto Gadgetronicx

Door or Window alarm circuit have been used widely in many homes to detect intrusion. A simple search in internet might fetch you lot of alarms for you to buy. But making your own alarm will be something special and...
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The post Door/Window alarm circuit appeared first on Gadgetronicx.

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Haptic game controller UnlimitedHand joins AtHeart!

Tue, 07 Feb 2017 09:00:59 +0000

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Pinned onto Arduino Blog

We are excited to announce that UnlimitedHand is now an officially licensed Arduino AtHeart product. Created by Japanese startup H2L, the wearable controller straps around your forearm like an Ace bandage and allows you to actually touch and feel things within the gaming world. UnlimitedHand consists of a 3D motion sensor, an array of muscle sensors, a multi-channel electronic […](image)



Converting a coffee maker into a 3D printer

Mon, 06 Feb 2017 21:35:57 +0000

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Pinned onto Arduino Blog

Heavy duty coffee makers are good for, well, making coffee. On the other hand, if you were to look at the frame without the preconception of what it can do, you might notice that there is space on top where equipment could be attached, and space on the bottom with a built-in heating pad on […](image)



HC 508 update

Mon, 06 Feb 2017 20:35:08 +0000

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Pinned onto Dangerous Prototypes

An update on mc68k’s HC508 project we covered previously: Good news, some components have arrived today, so I have completed a few 50 MHz boards. More details at Amiga projects blog.(image)



Timing Considerations When Using NVSRAM

Mon, 06 Feb 2017 20:00:41 +0000

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Pinned onto EEWeb

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Maxim's NVSRAM modules are constructed using a Maxim nonvolatile controller, a low-power CMOS static RAM memory component, and a lithium coin-cell battery. Under normal operating conditions, read or write operations are functionally identical to a stand-alone SRAM. Using the parallel I/O structure, a user can easily store data to, or fetch data from any memory location defined by the address bus width. Subsequent memory cycles can occur at this, or any other location in any order desired with no duty cycle or write cycle-count restrictions.

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Sort your M&Ms or Skittles with this ingenious machine

Mon, 06 Feb 2017 16:22:35 +0000

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Pinned onto Arduino Blog

Inspired by a YouTube video of another candy sorter, Willem Pennings decided to build his own version. After nearly eight months of work, he now has a device that can separate M&Ms or Skittles into their respective color dishes. Control is accomplished via a pair of Arduino Nano boards along with two EasyDrivers and an RGB sensor. […](image)



Project Showcase: Impressive N-MOSFET Powered Artwork

Mon, 06 Feb 2017 10:15:00 +0000

Pinned onto FreetronicsAt Freetronics we always love to see the amazing projects our customers create using our products. A few months ago we provided LOVOT LAB’s with a bunch of our N-MOSFET modules. We later found out that the modules were used to easily switch on and off a number of large, high powered LEDs for an art installation named “GRID I”. If this wasn't exciting enough, this project was located in South Korea! Fortunately, LOVOT LAB’s got back to us with some pictures and videos of the installation, the results are certainly spectacular! Don’t forget to checkout LOVOT LAB’s website to see more of the cool projects they have been working on.   Our Addressable Triple N-MOSFET driver / output module allow you to drive lots of different high powered loads using a single Arduino data pin. Effectively, our Addressable MOSFETs provide the same functionality as found in more common addressable LEDs such as our FreePixel, but can be used to drive any load you wish, not just an RGB LED. To find out more or to order visit the product page. To keep up to date with the latest news, projects, product announcements  and to let us know what you think of this project showcase follow us on Facebook and Twitter. [...]



How To Repair Electronics: Fixing My Drone

Mon, 06 Feb 2017 03:29:50 +0000

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Pinned onto Build Electronic Circuits

Because of a mistake made by yours truly, I decided to write about how to repair electronics. You see, I got a drone for Christmas this year. It was really windy outside that day. However, I was so excited to take it for a spin! I found a big open space, put my drone down […]

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App note: Choose the right voltage regulator to extend battery life in wearables

Sun, 05 Feb 2017 17:00:52 +0000

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Pinned onto Dangerous Prototypes

App note from Maxim Integrated on wearable devices demanding reduced quiescent and shut down currents when in idle and in sleep mode in a voltage regulator. Link here Wearable devices have emerged as the next big market opportunity in the electronics industry. Smart watches are among the most popular wearable items today. The healthcare market, […](image)



App note: Voltage reference long-term stability reduces industrial process control calibration costs

Sun, 05 Feb 2017 13:00:07 +0000

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Pinned onto Dangerous Prototypes

Application note from Maxim Integrated about improved long term stability of their voltage references. Link here (PDF) Large industrial plants such as those in the oil, gas, electricity, pharmaceutical, and food and beverage industries rely on electronic instrumentation to provide accurate, stable measurements to control their processes. The stability of an instrument very much depends […](image)



Star Trek control panel

Sun, 05 Feb 2017 12:15:49 +0000

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Pinned onto Techie Blog

This is one of those things that starts out as ridiculous but just might work.  We’re putting in a door at our hackerspace, a pocket door, so obviously it has to be pneumatic.  I was asked how to control this door, and I had one answer: Star Trek Electronic Door Chime Think Geek wants $30, Ebay wants […](image) (image)


Media Files:
http://feedproxy.google.com/~r/ElectronicsThisWeek/~5/zyNPYyCyce0/05ce03ccafb33d816e8188f90f2d32a4




mini-sucker (gravity sucker)

Sun, 05 Feb 2017 09:04:40 +0000

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Pinned onto Techie Blog

This past weekend (this post has been in the queue for a while…) there was the Ferndale Pig and Whiskey Festival.  I spend a lot of time at i3Detroit and was convinced to help out at this event. We have a large device aptly named the moneysucker as it consists mostly of a water cooler […](image) (image)


Media Files:
http://feedproxy.google.com/~r/ElectronicsThisWeek/~5/zyNPYyCyce0/05ce03ccafb33d816e8188f90f2d32a4




A look at the Neopixel: Controller die teardown

Sun, 05 Feb 2017 05:00:46 +0000

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Pinned onto Dangerous Prototypes

A look at the Neopixel from Electronupdate: A WorldSemi WS2812B, a.k.a. “NeoPixel”.  This little device can be easily controlled by a Arduino and can be used in all sorts of neat things.  More details, and a truly excellent Arduino Library may be found at Adafruit. Three LEDs and a controller bonded into a single package.  Let’s take […](image)



Skill Sunday: Power Monitoring

Sat, 04 Feb 2017 22:45:00 +0000

Pinned onto FreetronicsUsing a Clipsal Cent-A-Meter you can effectively monitor the power usage of different appliances. This is great, however the built in functionality can be rather limiting. You can not, for example track the power consumption of a device over time. Thankfully, combining this meter with Arduino can allow you to reach the power meters full potential!  Specifically, a 433MHz receiver can provide a communication bridge between the power monitoring system and an Ethernet connected Arduino allowing the power meter’s data to be sent into a SQL database for analysis and tracking. To find out more about this hack checkout the following link.    If you're looking to work with your own RF wireless hardware, but don't want to make your own receiver circuit - check out our range of  315/433 MHz receiver shields: Apart from being idea for working with the various low-cost data links on the market, the shield can also be used to capture wireless weather station data, as described in the book "Practical Arduino". For more information and ideas, check out the product page. To keep up to date with the latest news, projects, product announcements  and to let us know what you think of this project follow us on Facebook and Twitter. [...]



10 Best and Free Online Audio Editor

Sat, 04 Feb 2017 14:43:28 +0000

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Pinned onto Articles

Audio editors are to audio files as text editors and word processors are to text.  Professional audio editing software would prove to be expensive and overwhelming to a common user, who needs to do just basic editing jobs like cutting, trimming and joining his personal audio files.  In such cases, free online audio editors prove […](image)



Two-Phase Digital Power Factor Correction

Sat, 04 Feb 2017 14:00:12 +0000

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Pinned onto EEWeb

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This High Power Two-Phase Digital Power Factor Correction reference design builds upon IXYS Corporation’s Digital Power Control technology and extends it to high power levels in the area of Power Factor Correction (PFC). It introduces fast switching, high current, high voltage X2-class MOSFETs and incorporates Digital Inrush Current Control concepts. Functional control is based upon Zilog’s 8-bit Z8F6481 microcontroller, a member of the Z8 Encore! XP F6482 Series of MCUs.

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A Modular is Born

Sat, 04 Feb 2017 09:59:00 +0000

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Pinned onto Shack Nasties

I should 'fess up'. I've been having a ball. I've been neglectful of the radio arts whilst working up my recent experiments with analog synthesizer elements into something more permanent.In fact, you caught a glimpse of some of my synth modules on stri...(image)



The Hunt is both a playful game and tasteful home decor

Thu, 02 Feb 2017 21:50:20 +0000

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Pinned onto Arduino Blog

Carlos Rodriguez–who not only happens to be an Arduino team member but also a Masters student at Malmö University’s K3 school–has shared with us a project that he and a group of his interaction design classmates have created.  For the outsider, The Hunt is an Arduino-based light board; a piece of decoration in a tasteful home. Its six carefully crafted boxes are […](image)



4-20ma panel meter teardown

Thu, 02 Feb 2017 15:24:46 +0000

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Pinned onto Dangerous Prototypes

Teardown of a 4-20ma panel meter from SteelCity Electronics: Below is a panel meter that has been used in some sort of industrial process. It was manufactured in 1980 and I’m not quite sure who the manufacturer was – the company’s logo is not easy to read but it might say, “Aumano”. What caught my attention with […](image)



DIY Heng Lamp

Thu, 02 Feb 2017 10:16:00 +0000

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Pinned onto Dangerous Prototypes

Martin Raynsford shared detailed instructions of how to make a DIY Heng Lamp,  project instructables here: The HENG Balance lamp just successfully funded on Kickstarter, the design is pretty cool and unique so we decided to make a copy of it. At it’s heart it’s just an LED lamp with a simple micro switch to turn it on […](image)



The Rick and Morty Alarm will make sure you’re always on time

Wed, 01 Feb 2017 22:22:21 +0000

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Pinned onto Arduino Blog

Mike, CEO of the Useless Duck Company, recently got sidetracked playing computer games. After receiving a notification on his phone, he realized that he had lost track of the time and was late to a very important meeting. Being the Maker that he is, he decided to invent a system that would prevent this from happening again. Introducing the Rick and Morty Alarm. […](image)



Secrets to Homebrewing ~ Revealed!

Wed, 01 Feb 2017 19:49:00 +0000

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Pinned onto N6QW

Secrets to Successful Homebrewing -- An Art!Many years ago there was a joke going around about the person who widely advertised "Become Rich Quick!" Send $2 and discover how. As the story goes a reply would be received in the form of a postcard ( ...(image)



Build your own MIDI accordion with Arduino

Wed, 01 Feb 2017 16:13:05 +0000

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Pinned onto Arduino Blog

If you want to play accordion via a MIDI interface, manufacturers such as Roland do make such a device. The downside is that they tend to be fairly expensive, as one would have to assume they are something of a specialty item. Conversely, if you are able to get your hands on an accordion whose […](image)



3D Printed LeoStick Powered Robot

Wed, 01 Feb 2017 10:43:00 +0000

Pinned onto FreetronicsYouTuber Jaidyn Edwards has created a 3D printed two legged robot. If this wasn’t cool enough, the brain of this robot is the Freetronics LeoStick. Jaidyn’s robot is based of “BOB” an easy to make robot designed by Thingsverse user k120189. You can find full instructions on how to make the robot at the following link, and a video of Jaidyn’s robot in action below! So what is a LeoStick? It's the Arduino Leonardo-compatible board that's cheaper and smaller than the original:  Apart from being one of the smallest Arduino-compatibles on the market with USB, it also has an onboard RGB LED and piezo which can be used a knock sensor and various tune and sound effects. Plus you can add extra circuitry with the matching protostick! For more information and to order, click here. To keep up to date with the latest news, projects, product announcements  and to let us know what you think of this project follow us on Facebook and Twitter. [...]



A tiny orchestra of Lego Robots driven by Arduino

Tue, 31 Jan 2017 15:52:26 +0000

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Pinned onto Arduino Blog

By now, you are probably familiar with the Toa Mata Band–the world’s first LEGO robotic band controlled by Arduino Uno, which is hooked up to a MIDI sequencer. Now a few years since Toa Mata Band’s debut, Italian producer Giuseppe Acito has shared the group’s latest music video: a cover of Kraftwerk’s “The Robots.” As you can see below, Acito himself performs the 1978 track’s […](image)



PSU burner

Tue, 31 Jan 2017 04:18:15 +0000

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Pinned onto Dangerous Prototypes

Bob writes: What does one do when designing a power supply? Well, build a power supply tester, of course. One of the simplest things to build is a constant current load. This will allow for testing of the endurance of the power supply, as most of the designs out there are using slow components. However, […](image)



Guitar Hero: Flamethrower Edition!

Mon, 30 Jan 2017 04:27:00 +0000

Pinned onto FreetronicsAlthough the popular Guitar Hero console game is already pretty cool, instructables member oswaldonfire has stayed true to his name by modifying his Guitar Hero game so that a set of flamethrowers is triggered with each in game button press. The result is nothing short of spectacular! The project is entirely controlled by an Arduino Uno and a number of relays which trigger the flamethrowers. If you want to find out more about how you can build this awesome project yourself checkout the following link or the video (the action starts at around 10 seconds) of the setup in action!   If you are thinking about getting started with Arduino, but don’t know where to get started, our Experimenter’s Kit is a great way to learn the basics. The kit includes a wide range of parts including a servo, sensors, lights, buttons, a sound module and more. Importantly, a Freetronics Eleven Arduino-compatible board is included to ensure that the kit contains everything you need to get started with Arduino. All these great parts would be useless without some form of instructions which is why we have developed a comprehensive project and instruction booklet to get you started. Check out the product page to find out more. Working on a cool project you think we should know about? Inspired to start making your own Flamethrower Edition of Guitar Hero? Let us know in the comments section below or on Facebook and Twitter.   [...]



App note: Designing reliable drones using proper circuit protection

Sun, 29 Jan 2017 17:00:23 +0000

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Pinned onto Dangerous Prototypes

Littelfuse’s application note on drone circuitry protection, offering guard against overcharging its batteries, I/O and ESD protection. Link here (PDF) No doubt “pilot losing control” is behind many drone incidents and crashes. But what’s behind that “loss of control?” After all, even small recreational drones depend on a host of subsystems – GPS, receiver antennae, […](image)



8-bit Frogger game on a digital microfluidics device

Sun, 29 Jan 2017 14:17:32 +0000

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Pinned onto Arduino Blog

OpenDrop V2 is an updated design for an open-source digital microfludics platform, which was initiated by GaudiLabs in Luzern, Switzerland and developed in collaboration with several communities including hackteria | open source biological art, BioFlux and digi.bio. The device is part of a much larger ecosystem focused around digital biology with hopes of making personal lab automation accessible to everyone. OpenDrop runs on […](image)



Standalone Inductance Meter on a Etched Board

Sun, 29 Jan 2017 12:16:19 +0000

Pinned onto SoldernerdIn late 2014 and early 2015 I had posted a short series on an inductance meter project. The first post in that series described an Arduino shield that allowed an Arduino UNO to do inductance measurements and got this blog mentioned on dangerousprototypes.com for the very first time. I got a lot of encouraging feedback … Continue reading Standalone Inductance Meter on a Etched Board → [...]



Twelve Best Graphics Cards of 2017 – from High end to Budget friendly

Sun, 29 Jan 2017 09:10:41 +0000

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Pinned onto Articles

Nvidia and AMD are the top two graphics card designing companies in the world. With the launch of the 10x series, Nvidia has gained significant shares in the market. The 10x series is based on Nvidia’s Pascal architecture that provides twice the performance as compared to the previous family, with only half the power consumption. […](image)



App note: Simple Switcher PCB layout guidelines

Sun, 29 Jan 2017 00:03:40 +0000

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Pinned onto Dangerous Prototypes

Simple Switcher PCB layout guidelines from Texas Instruments, app note here (PDF!) One problem with writing an application report on PCB layout is that the people who read it are usually not the ones who are going to use it. Even if the designer has struggled through electromagnetic fields, EMC, EMI, board parasitics, transmission line […](image)



ZMOTION Occupancy Sensor

Sat, 28 Jan 2017 14:00:04 +0000

Pinned onto EEWeb This ZMOTION Occupancy Sensor reference design demonstrates the use of Zilog’s ZMOTION microcontroller and key IXYS components as a passive infrared (PIR) sensorbased motion detector lighting system that can operate in two modes – Occupancy Mode and Vacancy Mode. Both modes can use either PWM or 1–10 V interfaces to control dimmable lighting ballasts. These ballasts typically drive fluorescent/compact fluorescent (CFL), High Intensity Discharge (HID), or High Power LED lighting. A DIP switch is used to select features and modes such as sensitivity, delay time, dim level, pass through mode, vacancy mode, and occupancy mode. Ambient light detection, AC power control, and certain advanced features offered by ZMOTION, such as Pass Through and Hyper sense, are also supported. [...]



Teardown, repair and experiments with a Tektronix RSA 6114A real-time spectrum analyzer

Fri, 27 Jan 2017 23:09:11 +0000

Pinned onto Dangerous PrototypesTektronix RSA real-time spectrum analyzer teardown from The Signal Path: In this episode Shahriar attempts a difficult repair of a Tektronix RSA real-time spectrum analyzer. This well-equipped instrument reports several error messages during startup POST including LO Unlock as well as Signal Path failures. The service manual of the instrument does not provide any detailed […] [...]