This post but documents the use of esp-thermal-camera-streamer from dev-lab. I have not created the project being described here; but I rather like it anyway!

This allows one to use the relatively inexpensive MLX90640 thermal camera module with an ESP8266, letting one view and record live views from the sensor over the air!

Unfortunately, the frame rates provided are very low (~1Hz), even though the sensor can do way better; and this also relies on the microcontroller on the GY-MCU90640 breakout boards. It would be ideal if one could simply hook up the bare MLX90640 to the ESP8266 and have them interoperate.

Perhaps that’s something to revisit later.

During the times of lockdown and own lack of will to go outside, I have noticed the indoors air to go a bit stale at times. But how stale exactly?

One can now buy some relatively inexpensive sensors to measure the concentration of CO₂ in indoors air, and after acquiring one, a simple data-logger has been slapped together out of some mostly leftover parts from other unfinished projects. Yay!

This one has WiFi and a microSD card for storing logged data!

Last updated sometime in 2023/07, initially built in 2022/02

Once upon a time, a friend of mine, has got her hands on a cheap batch of the lovely HCMS-2904 display modules. And so the search for their applications began.

Since we didn’t get many of them, it would be ideal to have something where a single display per device could plausibly be used.

A tiny panel voltmeter came to mind as a possible, albeit a bit lame, option.

This project was originally undertaken some time in mid-to-late 2021.

xRISC 3L

This computer has been designed and built over one weekend in ~2013/05 by two excited ~16 year olds: me, and one M. Dreef.

Grotesquely silly and inefficient in design in retrospect, it was nonetheless whipped up very quickly, and we still happen to be somewhat proud of it all these years later. :3

Not RISC-like whatsoever.

Perhaps OneDay™ there will be a v2, addressing all the mistakes mentioned here while retaining most of the soul of the previous design.

This article is quite unfinished

WiProg v1

WiProg is a simple ESP8266-based wireless SPI flash programmer.

Connect to SPI flash of choice on one side, power on the other, program stuff via its Web UI.

Also supports resetting devices the SPI flash actually belongs to!

More documentation/code can be found here.

This project was originally implemented in ~2022/09.

iCEDIP v0

The iCEDIP puts a Lattice iCE5LP4K FPGA with its supporting circuitry on a semi-convenient, 40-pin DIP package!

Some batteries included. Metaphorically speaking.

This project was implemented in ~2019/09, with schematics originally redone for release in ~2021/02.