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Adafruit Feather 32u4 Adalogger is an all in one datalogger designed and produced by Adafruit. Feather is a new development board series from Adafruit. As the name suggests, Feather boards are thin and light. Feather is designed to be a new standard for open source development platforms.
Adafruit Feather 32u4 Adalogger is based on ATSAMD21G18 ARM Cortex M0 processor clocked at 48 MHz and at 3.3V logic. ATSAMD21G18 ARM Cortex M0 has 256K flash and 32K RAM and built in USB support. Therefore this chip has USB-to-Serial program & debug capability readily (and there is no need for an FTDI-like chip).
For easy use in portable projects, Adafruit added a connector suitable for their 3,7V Lithium polymer batteries and built in battery charging. There is no need for a battery because the board can be powered directly from the micro USB connector. If you want to use it with a battery, you are also free to run your project with a battery and then plug in the USB for the battery to be recharged. Feather boards will automatically switch over to USB power when it is available. The battery is also tied through a divider to an analog pin, so it is possible to measure and monitor the battery voltage and detect when it needs a recharge.
The board has a USB bootloader, so you can use it with the Arduino IDE. The pack also includes some headers for you to solder them and use in your projects or on your breadboard.
Note: USB cable and Li-Po battery are not included.
Adafruit Web Page: https://www.adafruit.com/products/2796
