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.

Cable/PCB adapter that converts any VirtualAccess/GW power supply connector to a standard USB-to-TTL/3.3V serial adapter for quick debug access on Westermo GW-series devices.

Daughter PCB that exposes the internal USB port externally on the VirtualAccess GW1152 router from Westermo.

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.

Custom Arduino shield redesigned for an intro Arduino class after SparkFun discontinued the original Danger Shield — adds improved components and layout while keeping the same hands-on exercise set.

A fully open source, 38-foot, 4-lane pinewood derby timing system built for Cub Scout Pack 2222 — Arduino Mega, custom PCB, IR sensors, solenoid starting gate, and 7-segment displays.