Projects

Builds worth copying.

Full write-ups for every ESP32, HomeKit and 3D-printed build on this site, real parts, real code, real photos.

Electronics Building a Budget BD-X Droid, Part 2: The Hardware Every part you need for the budget BD-X droid, what it does, and where to order it. One shopping list for about €426, with a checklist for when the boxes arrive. Read the build

Electronics Switch a Led over MQTT with an ESP-01 An ESP-01 that subscribes to an MQTT topic and switches a led on and off, the starting point for MQTT devices. Read the build

3D printing Building a 3D Printed Pit Droid, Part 3: Printing the Parts What to print first, which settings give strong parts without wasting filament, which parts need supports, and the exact list of files for the full animatronic build on a 220 mm bed, with the stand and the Death Star grill. With a log for what I really used. Read the build

Electronics NeoPixel Strip over MQTT with a NodeMCU A NodeMCU that sets on, brightness, hue and saturation of a 16-pixel NeoPixel strip over MQTT. Read the build

duck Building a micro-Duck, Part 4: Too Many Ducks Not a build step. I compare the XGO-Duck with the original Pollen Microduck and four other builds, check what each one really shows, and work out what a MicroDuck costs before I spend anything. Read the build

Software ESP32 Lifecycle Manager V2.0 A slow, friendly, step-by-step introduction to OTA updates trough Lifecycle Manager on the ESP32. I get quite a lot of messages and questions from people who want to “try OTA updates”, but who get stuck almost immediately. Read the build

Electronics Arduino Air Quality Monitor with a Dust Sensor and SD Card Log An Arduino Nano with a Sharp dust sensor, a DHT22, a clock and an SD card that logs the air quality at home. Read the build