The Adafruit Feather 32u4 Adalogger has all the basic features shared by all the Feather 32u4 range together with a datalogger. Where there is a prototyping area on the basic board (RS 124-5521) there is now a micro-SD card holder to write the data to. Pin #8 has a green LED so you can indicate reading and/or writing to the card.

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.

- 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