Decoder for the Maverick ET-733 BBQ thermometer

firmware for attiny 2313 multipurpose automatic shutter

RPI3-based home entertainment system

433 MHz garage/garden door opener "remote" based on ATtiny2313 with some extra features.

Digitize up to 10 resistance readings by just one ATtiny2313 as I²C slave.

Frequency counter with LCD display.

A simple Geiger–Mueller Counter for the Detection of Ionizing Radiation

Vintage Interface Project (V.I.P.) - reuse genuine fischertechnik Computing Interfaces as I²C device.

Control up to 10 servo motors via I2C with this firmware for ATtiny2313 and ATtiny26 originally by Stefan Frings

Weather station with remote sensors and TFT color display

Big DIY clock based on LED filaments

Some small LED-blinking test programs for the AVR microcontrollers

Smart metering of temperature and humidity with reporting via SMS texting / uploading data over GPRS to Thingspeak platform or others

the cheapest GPS tracker / GPS locator based on AVR ATTINY2313/4313 or ATMEGA328 (ARDUINO) and SIM800L GSM module