ESP32 ESPHome device that monitors a Carrier furnace — reads a differential pressure sensor for filter restriction and a phototransistor to decode blink error codes from the status LED.

Eagle CAD Arduino Mega shield PCB designed for Impression 5 Science Center exhibits — standardizes wiring, connectors, and power for the Giant Calculator and Genome Map projects.

A fully open source, 38-foot, 4-lane pinewood derby timing system built for Lansing Makers Network — Arduino Mega, custom PCB, IR sensors, solenoid starting gate, and 7-segment displays.