Adafruit GEMMA v2 - Miniature wearable electronic platform

The GEMMA is a compact wearable platform board, perfect for small projects with high creativity demands. With a mere 1.1-inch diameter, it carries a powerful ATtiny85 processor, 8K of flash memory, and programmable capability through the Arduino IDE via a USB connection.

Despite its size, GEMMA is equipped with 5 I/O pins, including analog inputs and PWM outputs. It's designed for ease with sewable or solderable pads, making it ideal for wearable technology without sacrificing performance.

Its specifications include a built-in 3.3V regulator, drawing only 9 mA, making it energy-efficient. The board supports USB and external power sources up to 16V, with protection features for reliable operation. It offers a micro-USB jack for straightforward programming and an LED indicator for the bootloader, simplifying the user experience.

GEMMA may not have a serial port for debugging, but its design compensates with remarkable functionality and flexibility, ensuring it becomes an essential tool in innovative electronic projects.