MicroPython rewrite of the Impression 5 giant calculator — 9-digit NeoPixel 7-segment display with 20 physical buttons, running on ESP32 or Raspberry Pi Pico.

A 12-year arc of MagiQuest wand projects — from a DigiSpark ATtiny85 duel kiosk in 2013, through NeoPixel ring upgrades and a learn/simulate device, to a 2025 ESPHome Home Assistant sensor.

Raspberry Pi Zero W chore tracker — physical buttons and NeoPixel LEDs show daily task progress in a tactile, screen-free display for kids.