There are 2 repositories under attiny topic.
PJON (Padded Jittering Operative Network) is an experimental, arduino-compatible, multi-master, multi-media network protocol.
Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8
Cooperative multitasking for Arduino, ESPx, STM32, nRF and other microcontrollers
Driver for SSD1306, SSD1331, SSD1351, IL9163, ILI9341, ST7735, PCD8544, Nokia 5110 displays running on Arduino/ESP32/Linux (Rasperry) platforms
Передача показаний воды по Wi-Fi. Watermeter Wi-Fi transmitter.
Arduino core for the tinyAVR 0/1/2-series - Ones's digit 2,4,5,7 (pincount, 8,14,20,24), tens digit 0, 1, or 2 (featureset), preceded by flash in kb. Library maintainers: porting help available!
Driver for LCD displays running on Arduino/Avr/ESP32/Linux (including Rasperry) platforms
Library for an ATTiny85 to use an SSD1306 powered, double buffered, 128x32 pixel OLED, over I2C
Arduino TM16xx library for LED & KEY and LED Matrix modules based on TM1638, TM1637, TM1640 and similar chips. Simply use print() on 7-segment and use Adafruit GFX on matrix.
Unleash your interrupts with ulta-fast task manager, tens of thousand push/pull TPS. Your interrupts now ultra-fast. Add simpicity into your architecture.
Collection of AVR Programmers and Accessories
Collection of cartridges, adapters, and replacements for the Commodore C64
A Streamlined IDE for Coding and Programming the ATtiny10 and other ATTiny Devices
Minimal I2C master routines for all AVR microcontrollers.
Battery powered door and window sensor with ultra low standby power. Arduino, ESP-12, Reed switch, ATtiny, LDO
Uninterruptible Power Supply
Arduino hardware SPI library for ATtiny44/84, 45/85, 461/861, 2313/4313.
Fast Graphics Library for Attiny85 and SSD1306 over I2c
Small FM Radio with RDS and OLED
An Arduino library for the 16-bit, 4 channel ADS1115 ADC. Convenient to use. All features of the ADS1115 are implemented, including alert functions.
I²C OLED on an ATtiny10/13/202
RS485 ModBus tiny multi-sensor module
Simple ISP Flash Tools for various Microcontrollers
A resource-conscious neural network implementation for MCUs
T12 Quick Heating Soldering Station
USB Type-C Power Delivery Trigger and Monitoring Board
Rotary Encoder with USB Interface
IR Remote Control
FM Radio with RDS
An Arduino-based debugWIRE hardware-debugger
A small Arduino library for using 315MHz / 433MHz RF modules with ATtiny13 and other low-memory microcontrollers.
Single-Cell Li-Ion Battery Charger with Monitoring