@Kajpa

Contactless ultrasonic distance meter on ATtiny1616. Measures 10-50 cm with ~2.4 mm RMSE using hybrid Pulse-Phase Ranging - ToF envelope onset + Goertzel phase filter, NTC temperature compensation. Pure AVR-GCC firmware (no Arduino), custom 2-layer PCB, 3D-printed enclosure. Built for WETI 2026 competition at Gdansk University of Technology.

AI-powered physical calculator that solves math, physics and chemistry problems - snap a photo of the task and get a full solution on the spot.