The Micro measures 48 mm in length and 18 mm in width and weighs about 13 g. The Nano, on the other hand, comes in the smallest form factor Arduino offers , with the same 18 mm width but a shorter ...

The Arduino Micro will be available exclusively through Radio Shack and Adafruit first before becoming more widely available next month. The board is available with headers for €21 (roughly $27 ...

All Arduino-compatible boards and extension modules created by Microduino are about the size of a quarter and stackable, ... Micro SD card jacks, a Bluetooth Shield, a 10 DOF Sensor, ...

Do you desire a teeny, tiny, little Arduino board with OLED display? You bet you do! Microview is a new "chip-sized" Arduino on Kickstarter that costs $45. What can it do? All kinds of stuff!

SD socket, Real-Time Clock (RTC), 10-bit DAC, LiPo charger, LiPo regulator, direct USB code upload and debugging, Blink LED, mouse and keyboard emulator, etc…. Source: Kickstarter Share ...

But it's possible to go even smaller, as the makers of a new Arduino-compatible product called "Microduino" show. At 1" × 1.1", it's nearly as small as a quarter.