Things with circuits, sensors, and solder. Firmware is yours to download — bring your own secrets.h where a sketch asks for one.
A wearable UV-exposure tracker for photosensitive people. ESP32-C3 + VEML6075 logs UVA/UVB/IR to microSD and syncs to a self-hosted Flask server. Companion to sardinetracker.
An ESP32-C3 four-button memory game — LED-backlit buttons, piezo tones, LiPo-powered. A Simon clone with a typo.
Attempt at reverse-engineering disposable vapes to reflash their MCUs (Puya PY32, Nations N32G031) and upcycle the e-waste into reprogrammable gadgets — including a vape-tamagotchi that's still in progress.