ATtiny85/45/25 I2C bootloader

OSC Calibrator and High-Voltage Fuse Resetter for 8-Pin ATtinys

Collection of AVR Development Boards

ESP32 with LoRa and a proximity sensor

High-Voltage Serial Programmer and Fuse Resetter

The Home2Ls - Smart Tools for a Private Home

A two-digit LED thermometer using a DS12B20 1-Wire temperature sensor, and an ATtiny84.

In-Circuit Oscillator Calibrator for AVR Microcontrollers

An open hardware electronic D20 PCB with capacitive touch, animated rolls, attunement, and a slightly suspicious personality.

An interrupt-driven approach to Arduino programming

A hand-held 7-segement display game based on the ATtiny84

Senso implementation for ATmega328p or ATtiny84 including PCBs

KiCad ATtiny84/x14/x02 (SMD) and ESP-01 (ESP 8266) PCB boards

Adapter boards for the Commodore 128 to allow selecting a KERNAL using the RESTORE key.

An easy to use makefile for Arduino, and some config to use VSCode as an IDE

A physical debugging tool for your daily code struggles

Arduino measuring tape with HCSR04 and 128x32 I2C OLED display

POV spinner with ATTiny84

Programming with ATtinyx4

Giveaway rock, paper, scissors laser tag badge.