There are 4 repositories under atmega topic.
ᕲ Duino-Coin is a coin that can be mined with almost everything, including Arduino boards.
T12 Quick Heating Soldering Station
Software for USB-connected relays with HID interface. See the WIKI for more info.
Minimal I2C master routines for all AVR microcontrollers.
Collection of cartridges, adapters and replacements for the Commodore C64
Fast Graphics Library for Attiny85 and SSD1306 over I2c
Collection of AVR Programmers and Accessories
Electronic Lead Screw for metal lathe
Small version of the famous component tester from mikrocontroller.net
Arduino library to read VCC supply level without external components
C++ platform to build Arduino and AVR projects. Rationale is size and speed optimization.
A little less unfinished TFTP bootloader for Arduino Ethernet or Arduino with Ethernet Shield
DIY GPS GSM vehicle tracker based on SIM808 module and ATMEGA328P
This is simple GPS vehicle tracker base on SIMCOM SIM7000E/G/A module. Works for GSM/LTE-M networks around the globe
Parallel EEPROM Programmer for 28C64B and 28C256
The replacement board for the AY-3-8910/AY-3-8912/YM2149F sound chip. Compatible with https://www.avray.ru project firmware.
Collection of AVR Development Boards
A really simple, non-preemptive task scheduler.
Arduino library to play MML music using a piezo speaker on an output pin. Implemented using the MmlMusic base library.
Slow down the server fan speed whilst still allowing extra cooling when needed and shutdown in case of fan failure
ATmega8 working as USB mouse, by reading movements from a magnetometer (digital compass). [Projeto Final do curso de Bacharelado em Ciência da Computação DCC/UFRJ]