last modified: October 23, 2025
Posted on 2019-08-18— Common, Projects
I added a stable Hitachi LCD driver to the HAL layer, using an MCP23008 backend to cut wiring and simplify hardware. This post walks through parts, firmware repositories, and how to run the demo via serial shell. Read the full article for setup steps, code links, and usage tips.
Posted on 2016-10-24— Projects
I built a simple, tweakable fan controller after my server rack's components started overheating. I wanted quiet, reliable cooling I could adjust, so I designed a controller with PWM, PID tuning and an LCD. If you’re curious about the steps and ideas, read the full project page to learn more.
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.