Adafruit Feather 32u4 Development Boards

The Feather 32u4 is a range of development boards from Adafruit. They are powered by the Atmel ATmega32u4 microcontroller clocked at 8 MHz with 3.3 V logic. This chip has 32K of flash and 2K of RAM and built-in USB. As a result it has a USB-to-Serial programme and debug capability built in and it can also act like a mouse, keyboard, USB MIDI device.

This chip is supported in the Arduino IDE and can run nearly every sensor/library available.

The Feather is perfect for small or portable projects. There is a connector for 3.7 V Lithium polymer batteries and built-in battery charging circuit which you can use to measure and monitor battery levels. Lithium Polymer battery and USB cable not included.

Supplied fully assembled and tested, with a USB bootloader that lets you quickly use it with the Arduino IDE.

Adafruit Feather 32u4 Basic Proto Board

The Adafruit Feather 32u4 Basic Proto has all the basic features shared by all the Feather 32u4 range together with a small prototyping area. In simple projects where you would like to attach a button or sensor, you could skip on a breadboard and wire it directly on to the board.

- 51 x 23 x 8 mm / 2.0" x 0.9" x 0.28" (without headers)
- 4.8 grams
- 3 V regulator with 500 mA peak current output
- 20 GPIO pins
- Hardware serial, hardware I²C, hardware SPI support
- 8 x PWM pins
- 10 x analogue inputs (one is used to measure the battery voltage)
- Built in 100 mA lithium polymer charger with charging status indicator LED
- Pin #13 red LED
- Power/enable pin
- 4 mounting holes
- Reset button