A light-weight Arduino hardware package for ATtiny13
Uninterruptible Power Supply
I²C OLED on an ATtiny10/13/202
T12 Quick Heating Soldering Station
IR Remote Control
Simple RPM-Meter
OSC Calibrator and High-Voltage Fuse Resetter for 8-Pin ATtinys
ATtiny13 Software UART library.
12-Button IR Remote Control
FM Stereo Radio with Headphone Plug
Simple Logic Probe
Collection of AVR Development Boards
RF Remote Control
An annoying little thing, really