published: September 2, 2016 — last modified: October 23, 2025
Today the steel balls for the Outmoded Sequencer arrived. They look very nice. For the first version, I will use these steel balls to program the sequencer matrix. Below the matrix there will be small magnets to make them “click” into the right places.
More Posts
Posted on 2016-09-08— Projects
I built an 8×8 neodymium magnet matrix to keep steel-ball switches in place under a PCB for my Outmoded Sequencer. I walk through marking and drilling 64 holes, gluing each magnet, and sealing with acrylic paint. If you're curious to try this practical approach, read the full post for step-by-step tips.
Posted on 2020-12-19— Projects
I published a small command-line tool to read the Sensirion SGP30 air-quality sensor on a Raspberry Pi. I explain usage, options, and how to build and install the C tool so you can get JSON CO2/TVOC output. If it helps, please read the full post for details.
Posted on 2021-01-11— 3D Printing, Projects
I tried parametric design and published a set of heart-decorated 3D-print boxes in 500 sizes (35–120 mm). I explain part numbering, two lid fits, and printing tips, and I've shared the STLs on GitHub. Read the full post to find the exact size and download files for your printer.
Posted on 2023-01-29— 3D Printing, Build, Projects
I tested three inexpensive, easy methods to add LED lighting to my modular 3D‑printed lantern using USB power: reused LED modules, short 5V strips, and WS2812B RGB with a microcontroller. I share parts lists, soldering tips, diffuser advice, and firmware steps—read on for step‑by‑step instructions and printable models.
Posted on 2017-03-03— How and Why
In part three I assemble and test the prototype PCB, set ATtiny13A fuses, and refine user interaction and firmware plans. I cover LED display choices, power measurements and a modular firmware approach. If you’re building a low-cost plant sensor, read the full post for practical steps and diagrams.
Posted on 2017-08-24— Projects
I built a simple, single-portion programmable cat feeder in about four days using rapid prototyping. I describe the Fusion360 sizing, plywood shell, servo mechanism, electronics, and the issues I encountered with breakout boards. If you're curious, read the full post for parts list, wiring and source code.