Key Features: ATSAMD21G18 @ 48MHz with 3.3V logic/power 256KB of FLASH + 32KB of RAM Easy reprogramming Built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip This is the first Feather that is specifically designed for use with CircuitPython! CircuitPython is our beginner-oriented flavor of MicroPython - and as the name hints at, its a small but full-featured version of the popular Python programming language specifically for use with circuitry and electronics.That doesn't mean you cant also use it with Arduino IDE! This chip comes with built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip. The Feather M0 Express uses the extra space left over to add a Mini NeoPixel, 2 MB SPI Flash storage and a little prototyping space. You can use the SPI Flash storage like a very tiny hard drive. When used in CircuitPython, the 2 MB flash acts as storage for all your scripts, libraries and files. When used in Arduino, you can read/write files to it, like a little datalogger or SD card, and then with our helper program, access the files over USB.Item SpecificsFully assembled and tested1 - small headerNo EEPROM32.768 KHz crystal for clock generation & RTC3.3V regulator with 500mA peak current outputUSB bootloader and serial port debugging20 GPIO pinsHardware Serial, hardware I2C, hardware SPI supportPWM outputs on all pins6 x 12-bit analog inputs1 x 10-bit analog ouput (DAC)Built in 100mA lipoly charger with charging status indicator LEDPin #13 red LED for general purpose blinkingPower/enable pin4 mounting holesReset buttonSize: 51.0mm x 22.8mm x 7.3mm / 2.0" x 0.9" x 0.3"Weight: 4.7g / 0.2ozLipoly battery and USB cable not includedCircuitPython does not come preloaded
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