last modified: October 23, 2025
Posted on 2021-03-09
I built a small, extensible MicroPython Bitmap Tool to convert images into ready-to-use MicroPython code fragments. It has a simple UI: choose a format, load a bitmap and copy the code. If you work with embedded displays, please read the full post for downloads, source and build instructions.
Posted on 2018-03-17— Projects
I built a small test board for the TPS61092 to evaluate thermal performance, hand‑solderability, and layout before using it in my project. The chip stayed cool under 0.5A and the OSH Park PCB looked great. Read on for measurements, the BOM, and practical soldering tips if you want to try it.
Posted on 2018-02-23— Common
I’m looking for a reliable step-up converter to make 5V from a 2.5–5.5V input to run sensors, motors and small heaters. I tested the XC9142B50DMR-G and hit thermal and shutdown issues (no load disconnect). Please read the full post and share any replacement suggestions or questions.
Posted on 2015-09-04— Software
I created a small macOS app that converts bitmap 8×8 fonts into byte arrays for text-only LCD displays. It accepts PNGs, validates the layout, and outputs source code you can save or copy. I also provide an example font, a Photoshop template, and the source—read on for download and usage.