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.

Arduino library for reading an array of photocell (LDR) sensors with a sliding-window moving average and configurable threshold detection — supports multiple sensors with individual sample rates.

Arduino Micro Pro HID device that prevents screensavers when room lights are on — uses a dual-criteria light-change algorithm to distinguish light switches from gradual daylight changes.

Interactive museum exhibit at Impression 5 Science Center — visitors use RFID tablets to explore botanical migration routes on a lit map, with green/red LED feedback guiding correct selections.

Arduino Mega replacement for Impression 5 Science Center’s giant calculator exhibit — custom LED display and keypad controller using big-number arithmetic.

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.

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

Non-blocking, interrupt-driven Arduino library for the VLSI VS1053 audio decoder chip — streams MP3, AAC, Ogg Vorbis, FLAC, WMA, and WAV from SD card over SPI.

Life-size Connect Four built for Detroit Maker Faire to show that not every great maker project needs electronics — foam disc pieces, a magnetic placement stick, and simple enough for a 6-year-old to play.

The electronics half of the HarpsiGourd — 15 pumpkins wired as capacitive touch keys driving a Music Maker MP3 shield. Pairs with the CNC Faux Piano shell for exhibition use.

Oversized playable Tetris built from 200 addressable RGB LEDs across a 10×20 grid, controlled by an Arduino with a Wii Nunchuk. Presented at Detroit Maker Faire and used in the Lansing Silver Bells parade float.

Full LCARS-style bridge simulator — hand-built capacitive touch consoles at every station, BSG 2003 aesthetic, support craft, narrated training, and spectator viewer portals.

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.

Arduino Mega sketch for sequenced Christmas lights using Vixen lighting software — supports daisy-chaining multiple Arduinos for up to 51 channels per board via serial passthrough.

Arduino library for measuring free RAM at runtime — critical for debugging out-of-memory crashes on AVR boards with as little as 2 KB of RAM.

The original non-blocking, interrupt-driven Arduino library for the SparkFun MP3 Player Shield (VS1053) — superseded by the generalized vs1053_for_SdFat library.