Based on the ATmega328, a processor with plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore, the Adafruit METRO is the culmination of years of playing with AVRs.
It's a fully assembled and tested microcontroller and physical computing board with through-hole headers attached.
This is the LilyPad Arduino Simple Board. It's controlled by an ATmega328 with the Arduino bootloader. It has fewer pins than the LilyPad Arduino Main Board, a built in power supply socket, and an on/off switch. Any of our LiPo batteries can be plugged right into the socket.
The LilyTiny is a tiny little LilyPad board designed to add flashy functionality to your project without taking up a lot of room. Even though it's as small as some of the LilyPad sensors, this board actually has an ATtiny microcontroller on it so it's actually pretty smart!