Arduino Yun Mini wireless development board

Aimed at embedded engineers, hackers and students, the Arduino Yun Mini is a redesign of the Arduino Yun Wi-Fi microcontroller board and has been re-engineered to be used with a breadboard, making prototyping easier.

The product has PCB dimensions of 71.1 x 22.9 mm and a weight of 16 g. Its small size makes it suitable for use in small spaces and especially projects for home automation, where locating smaller devices in small boxes can improve siting flexibility.

The device offers a breadboard PCB with an ATmega32u4 microcontroller and the Qualcomm Atheros AR9331 system-on-chip IC with a MIPS 24K CPU, which operates at up to 400 MHz and supports a Linux distribution based on OpenWRT called Linino. A bridge library enables communication between the two processors, providing Arduino programs with the ability to run shell scripts, communicate with network interfaces and receive information from the AR9331 processor.

The board has built-in Wi-Fi and supports 20 digital input/output pins, seven of which can be used as PWM outputs and 12 as analog inputs. Other specifications include a 16 MHz crystal oscillator, a micro-USB connector, an ICSP header, two reset buttons and one user button.