The Croduino Damba is a very small Arduino compatible board. It is sized just 22 x 26 mm (0.9 x 1 inch) and features a CR1220 battery onboard so it easily becomes a wearable. It is based on Attiny85 microcontroller which runs an Arduino bootloader.

To program this board you will need another Arduino board. The process of programming is made simple since there is a connector on Damba for plugging in directly in Arduino board (for example, Croduino Basic).

More specs:

• Size: 22 x 26 mm
• Attiny85 microcontroller on board features 6 digital outputs of which are 2 PWM, 4 analog input and possibility for SPI or I2C communication
• Embedded 1MHz or 8MHz oscillator with possibility to connect external one, up to 20MHz
• Works from 2.7V to 5.5V
• Has CR1220 battery socket on its back to make it full-featured wearable
• Orange LED on D0 pin, easy to disable it by desoldering/cutting trace
• Simple programming
• 6.5kB available in Flash, 0.5kB SRAM, 0.5kB EEPROM
• Free lifetime technical support at techsupport@e-radionica.com
• Made in EU (Croatia)

You will receive:

• Croduino Damba board
• CR1220 battery
• 47uF capacitor for programming
• Male headers

Whole design is OSH and files are available to download.

This board has been manufactured in Croatia by e-r.io: Blog, Github, Web store.