ADAFRUIT INDUSTRIES Microcontroller Development Board Feather 32u4 Basic Proto 2771 ATmega32u4 MCU 8 MHz 3.3 V Logic

ADAFRUIT INDUSTRIES model 2771 Feather 32u4 Basic Proto Microcontroller Development Board is a compact and versatile development board powered by the Atmel ATmega32u4 microcontroller running at 8 MHz with 3.3 V logic levels. Suitable for a wide range of industrial, educational, and prototyping applications, this MCU board combines ease of use with comprehensive features.

The Feather 32u4 Basic Proto includes a small prototyping area allowing direct soldering of components such as sensors or buttons, eliminating the need for an external breadboard. It features 20 GPIO pins, including 8 PWM outputs and 10 analog inputs (one dedicated to battery voltage measurement), supporting diverse interfacing needs for complex projects.

The board supports multiple hardware communication protocols including hardware serial, I²C, and SPI. It integrates a built-in 100 mA lithium polymer battery charger with status LED indicator and a 3 V regulator capable of delivering 500 mA peak current, facilitating power management in portable applications. A USB bootloader pre-installed on the device enables straightforward programming and debugging via the Arduino IDE. The MCU can also function as a mouse, keyboard, or USB MIDI device, enhancing its applicability.

Compact and lightweight, the board measures 51 mm in length, 23 mm in width, and 8 mm in height (excluding headers), and weighs only 4.8 grams. Additional practical features include a power/enable pin, reset button, pin #13 red LED for status indication, and four mounting holes for secure installation.

Fully assembled and tested, this RoHS compliant development board is ideal for small or portable projects in electronics, embedded systems development, STEM education, and prototyping in industrial automation, IoT devices, and sensor integration.

The board’s small size and built-in battery charger allow for compact and mobile device designs. Hardware support for serial, I2C, and SPI facilitates connectivity to a wide variety of peripherals. Use in educational settings is enhanced by compatibility with Arduino IDE and extensive sensor libraries.

Battery monitoring capabilities enable safer and more reliable portable power applications. RoHS compliance ensures adherence to environmental standards. Explore EnvMart’s collection of Microcontroller Development Tools and Feather series boards to find compatible accessories and complementary devices for your next project.