ATTO – The World’s Smallest Arduino Compatible Board
Atto is the world’s smallest Arduino compatible board! It is based on the ATmega32U4 microcontroller and comes with reset push-button as well as an RGB (rainbow) LED controlled by 3 PWM channels.
The new Arduino board is 10.3 mm x 11.5 mm (0.40” x 0.45”) and it has an onboard reset button as well as an RGB (rainbow) LED. There are 16 pins (1.27 mm/0.25” pitch) and the board consists of 12 + 3 (RGB LED) digital I/O, 4 + 3 (RGB LED) PWM, and 4 analog input channels. Supported interfaces on the board include USB, SPI, I2C (TWI), and ISP.
There are also available two different types of breadboard friendly expansion boards and all products from nionics.com are available for pre-order.