Adafruit 1501 PCB design board Adafruit Trinket - Mini Microcontroller - 5V Logic AVR® ATtiny ATtiny85

Trinket is a tiny microcontroller board, built around the Atmel ATtiny85. We designed a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. It's our lowest-cost arduino-IDE programmable board! The ATtiny85 has 8K of flash, and 5 I/O pins, including analog inputs and PWM 'analog' outputs. Our USB bootloader enables reprogramming it over a USB port just like an Arduino. Simple modifications to the Arduino IDE make it work like a mini-Arduino board, though it is not 100% Arduino-compatible. This is the 5V Trinket. Use it for sensors and components that can use or require 5V logic. It can run at 8 MHz or at 16MHz by setting the software-set clock frequency.