The Cute ESP32 Pocket Wardriver! Based on the Xiao / QT-Py boards.

A simple program for controlling a PWM fan from a microcontroller with Rust

This implements an i2c slave with a register map of 256 bytes in sram. The slave supports multi-byte writes and reads. It uses the "Wire" library.

This project compares low-cost analog and digital UV sensors during a near-space balloon flight. UV measurements taken at specific altitudes will be compared with NASA reference data to determine which sensor type is more accurate and suitable for low-budget educational and startup space missions.

Two relay channels are controlled with an Adafruit QT PY running USBTMC

Custom PCB with SAMD21 QT PY controlling TWO ADG1606BRUZ 16 input muxes!

Custom PCB with SAMD21 QT PY controlling TWO ADG1606BRUZ 16 input muxes! This board is 30% smaller than V3 and uses a single 16x2 pin header.

Standalone ESP32-S3 indoor air/environment monitor with a local web dashboard — no Home Assistant required.

Arduino library DAC control using a serial (USB) terminal

A simple program to set the speed of a fan using the RP2040 QT Py and the EMC2101 fan controller

A software defined pattern is given by serial input and then driven on a gpio pin. Fastest pattern has 2us intervals, but any interval may be specified.

A small case for ESP32-QT-Py devices

The rising and falling debounce duration between two pins is measured. Maximum debounce duration is 4 seconds rising or falling (no limit on how long both signals can be high for).