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This feed is dedicated to all the mental flotsam and jetsam that I find on the web and pursue in my off hours. It's a view into the head of a geek blogger with more interests than time. I hope you find something interesting.

Last Build Date: Tue, 13 Feb 2018 18:29:29 +0000

Copyright: Copyright 2006, Mark VandeWettering

Creality CR-10 updates…

Tue, 13 Feb 2018 18:29:29 +0000

So, I got a new 3D printer about ten days ago, a Creality CR-10. While this printer requires a bit of assembly, it is in general a much nicer printer. It has a 300x300mm heated bed, a control box which is actually in a case that won’t electrocute you, and is constructed from aluminum channel … Continue reading "Creality CR-10 updates…"

Successful Launch / Recovery of the Falcon Heavy

Tue, 06 Feb 2018 21:12:31 +0000

Totally amazeballs. I had goosebumps.

Weekend Update…

Mon, 05 Feb 2018 18:52:56 +0000

This is just a short set of updates for my weekend projects, meant to keep me in the habit. I’ll write up a more complete version of these projects going forward. First of all, a new acquisition. My Anet A8 3D printer has proven to be, well, not the most reliable of gadgets. I still … Continue reading "Weekend Update…"

More progress on the ISS clock project…

Wed, 31 Jan 2018 19:37:31 +0000

I haven’t posted an update here recently, but I am (mostly) living up to my New Year’s resolution to spend at least 30 minutes a day working on a project. This has taken the form of some stupid but necessary chores (like fixing the broken pull cord on my lawnmower) but has mostly taken the … Continue reading "More progress on the ISS clock project…"

Brief Update on my ESP32 ISS Clock

Wed, 24 Jan 2018 06:45:47 +0000

Several days ago, I cobbled together a short bit of code to make an NTP enabled clock out of an ESP32/OLED module. I had previously used an ESP8266 and a separate module to make a little demo that predicted the location of the ISS. I thought that the ESP32 would make a better development platform, … Continue reading "Brief Update on my ESP32 ISS Clock"

A short audio book review: The Making of the Atomic Bomb, by Richard Rhodes

Wed, 24 Jan 2018 06:33:45 +0000

I often get nearly an hour and a half of commute time in my car each day, so I have lots of time. Rather than just waste it, I like to listen to podcasts or audio books. Recently I decided to subscribe to Audible, and started getting some interesting books. I had read The Making … Continue reading "A short audio book review: The Making of the Atomic Bomb, by Richard Rhodes"

Other weekend projects, including a new cat tree!

Mon, 22 Jan 2018 04:32:20 +0000

I had a bunch of chores that I wanted to get done this weekend. Our gardener has disappeared off the face of the earth, and our front yard was looking ragged and weedy, so I decided to try to mow it myself. I have two mowers in my garage, a Black and Decker rechargeable electric … Continue reading "Other weekend projects, including a new cat tree!"

Quick tinkering of an NTP clock with the ESP32

Sun, 21 Jan 2018 23:51:05 +0000

I spent a little time today trying to make the bare minimum code necessary for the ESP32 to connect to my WiFi network and synchronizing the time using NTP. It’s not really that amazing, but required a tiny bit of snooping around to figure out how to make it work. Archived here, just for fun. … Continue reading "Quick tinkering of an NTP clock with the ESP32"

A few quick thoughts on the Inky pHAT

Thu, 18 Jan 2018 17:52:12 +0000

Okay, I got it working. See! But I had a number of really annoying problems, none of which really had to do with the hardware: I installed it on a Pi3 I had lying around that previously had been running my 3D printer using Octopi. I tried to do an “apt-get update” and “apt-get upgrade” … Continue reading "A few quick thoughts on the Inky pHAT"

Inky pHAT arrives: a 3 color E-ink display for the Raspberry Pi

Wed, 17 Jan 2018 22:55:53 +0000

For some reason, I’ve always been attracted to E ink displays. They combine a number of interesting features like low power (none when not being refreshed), high contrast and a wide viewing angle. But they only recently have begun to get cheap enough to play with. The other day I was surfing around and discovered … Continue reading "Inky pHAT arrives: a 3 color E-ink display for the Raspberry Pi"

Interactive Programming… in C

Wed, 17 Jan 2018 16:01:42 +0000

I’ve been kind of interested in a type of “livecoding” where changes to a code base are immediately reflected in a running program. I’ve seen Inigo Quilez (author of the famed do this with a scaffold that he wrote using OpenGL. Literally as he types new shader code, the changed shader is loaded and … Continue reading "Interactive Programming… in C"

Yes, I crochet (and knit, although less well.)

Tue, 16 Jan 2018 21:49:40 +0000

In addition to my geek hobbies, I have resurrected a skill that was taught to me by my Grandma Busch when I was seven years old: crochet. It began earlier in 2017, when Carmen wanted me a pussy hat so we could attend various protests and rallies. I told her I could knit or crochet … Continue reading "Yes, I crochet (and knit, although less well.)"

Connector resistance matters: the Anet A8 PCB heated bed…

Sat, 13 Jan 2018 17:03:36 +0000

My previous entry talked about the problems that I’ve been having with the Anet A8. I haven’t had the time to actually do some rework of the connector (I should get to that later today) but while I was commuting I thought about it a bit, and was trying to answer the following questions. How … Continue reading "Connector resistance matters: the Anet A8 PCB heated bed…"

Debugging my Anet A8 hot bed…

Thu, 11 Jan 2018 06:10:12 +0000

As in most things, whether you achieve success has a lot to do with what connections you have. And this is true of my somewhat unreliable Anet A8 3D printer more than most. My printer had been down for a month while I worked on getting a new hot end installed properly. It wasn’t so … Continue reading "Debugging my Anet A8 hot bed…"

SSD1306 drivers for the ESP-IDF framework…

Mon, 08 Jan 2018 18:31:06 +0000

If I was going to port my ISS code to the ESP32 using the ESP-IDF framework, I’d need a driver for the SSD1306 OLED display.  It does seem like some people have been down this path before.  I haven’t tried any of the following, but a little quick googling revealed some promising links: … Continue reading "SSD1306 drivers for the ESP-IDF framework…"