last modified: October 23, 2025
Posted on 2016-10-24
I built a quiet, configurable fan controller with an Arduino Uno, two DHT22 temperature sensors, PWM-controlled 12V PC fans and a simple PID loop. I describe the hardware, wiring, Adafruit shields, and logging setup — with schematics and code on GitHub. Read the full post for parts and instructions.
Posted on 2016-08-17
I built a humble, microcontroller-free 8×8 music sequencer prototype using LM555 timers, a CD4022 counter and MOSFET switches. In this post I explain the beat generator, matrix wiring, tuning and speaker driver, with photos and a parts list. If it sounds interesting, please read the full article.
Posted on 2016-05-21
I walk you through a short, budget-friendly tutorial to make a simple, attractive table light using an IKEA candle holder, a NeoPixel ring, an Adafruit Trinket and common tools. If you like hands-on projects, please read the full guide for parts, wiring, code and step-by-step photos.
Posted on 2015-10-05
I began this Data Logger Deluxe to test whether sealed boxes can protect documents in my humid root cellar. I'll describe prototyping, a minimal sensor-only build, and the final unit with display, capacitive keypad, and wireless charging. If you're curious, please read the full project for details.
Posted on 2015-08-23
I built a simple data logger to test whether sealed boxes keep my documents safe in a humid root cellar. This guide outlines the minimal and simple builds, parts lists, and basic software so you can try the test yourself. Please read the full post for the overview and step-by-step instructions.
Posted on 2014-12-17— Common
I've released Lucky World, a compact jump'n'run for the MeggyJr RGB featuring an intro, 16+ levels, secrets and an end scene. I squeezed it into ATmega328P limits and shared the sources under GPLv2. If you're curious, please read on for downloads, requirements, and play instructions.
Posted on 2014-11-21
I walk you through a simple, low-cost project to make color-changing Xmas spheres using NeoPixels, an Arduino Uno and folded paper strips. I share parts, assembly photos, wiring and code so you can recreate or gift them. Read on for step-by-step instructions and the GitHub code.
Posted on 2014-10-28
I built a compact device that detects motion on protected surfaces and plays my recorded phrases to gently deter my cat. The documentation covers prototypes, hardware, and software (SD card, DAC, audio playback, sensors). If you’re curious or want to build one, read the full guide for step-by-step details.