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#4 - used as the MicroSD card CS (chip select) pin.Since not all pins can be brought out to breakouts, due to the small size of the Feather, we use these to control the SD card! If they are used, make sure its with a device that will kindly share the SPI bus! Also used to reprogram the chip with an AVR programmer if you need.
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However, we really recommend keeping them free as they should be kept available for the SD. SCK/MOSI/MISO - These are the hardware SPI pins, used by the microSD card too! You can use them as everyday GPIO pins if the SD card is not inserted. #13 - GPIO #13, can do PWM output and is connected to the red LED next to the USB jackĪ0 thru A5 - These are each analog input as well as digital I/O pins. #12 - GPIO #12, also analog input A11 and can do PWM output. #10 - GPIO #10, also analog input A10 and can do PWM output.
This analog input is connected to a voltage divider for the lipoly battery so be aware that this pin naturally 'sits' at around 2VDC due to the resistor divider #9 - GPIO #9, also analog input A9 and can do PWM output. #6 - GPIO #6, can also do PWM output and analog input A7 Can also do PWM output and act as Interrupt #0. There's no pull up on this pin by default so when using with I2C, you may need a 2.2K-10K pullup. #3 / SCL - GPIO #3, also the I2C (Wire) clock pin. #2 / SDA - GPIO #2, also the I2C (Wire) data pin. #1 / TX - GPIO #1, also transmit (output) pin for Serial1 and Interrupt #3 #0 / RX - GPIO #0, also receive (input) pin for Serial1 and Interrupt #2 This is the general purpose I/O pin set for the microcontroller.
The Feather 32u4 Adalogger uses the extra space left over to add MicroSD a green LED:
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USB native support, comes with USB bootloader and serial port debugging.3.3V regulator with 500mA peak current output.Light as a (large?) feather - 5.1 grams.Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in.Here's some handy specs! Like all Feather 32u4's you get: We also tied the battery thru a divider to an analog pin, so you can measure and monitor the battery voltage to detect when you need a recharge. The Feather will automatically switch over to USB power when its available. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. You don't need a battery, it will run just fine straight from the micro USB connector.
Atmel usb driver windows 8 adafruit portable#
To make it easy to use for portable projects, we added a connector for any of our 3.7V Lithium polymer batteries and built in battery charging. This chip has 32K of flash and 2K of RAM, with built in USB so not only does it have a USB-to-Serial program & debug capability built in with no need for an FTDI-like chip, it can also act like a mouse, keyboard, USB MIDI device, etc. Its an Adafruit Feather 32u4 with a microSD holder ready to rock!Īt the Feather 32u4's heart is at ATmega32u4 clocked at 8 MHz and at 3.3V logic, a chip setup we've had tons of experience with as it's the same as the Flora. This is the Adafruit Feather 32u4 Adalogger - our take on an 'all-in-one' datalogger (or data-reader) with built in USB and battery charging. Courtesy of Adafruit - Feather is the new development board from Adafruit, and like it's namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores.