# StackRduino M0+ PRO
![alt text](https://github.com/hanyelkomy/StackRduino-SAMD21M0/blob/master/StackRduino_M0%2B_PRO.png?raw=true)

StackRduino M0+ PRO is an open source Development board based on the ATSAMD21G18 for Arduino & Circuit-Python packed with features & comes with many stackable shields

With support for Adafruit CircuitPython, Arduino IDE, and other libraries the StackRduino M0+ PRO is able to act as a single solution for all projects great and small.

## Hardware
 - [SAMD21G18](https://www.microchip.com/wwwproducts/en/ATsamd21g18) Processor. This is the same chip used in many Adafruit Feather designs.
 - 256KB of FLASH + 32KB of RAM
 - USB C power and data
 - Built-in battery charger & LiPo Fuel Gauge
 - 8MB Flash Storage for CircuitPython
 - 32.768 KHz crystal for clock generation & RTC
 - DUAL 3.3V regulator with 700mA peak current output each
 - APDS9960 RGB, proximity and gesture sensor
 - BME680 Environmental Sensor
 - BNO055 9-DOF Absolute Orientation IMU
 - You also get tons of pins - 20 GPIO pins
 - Hardware Serial, hardware I2C, hardware SPI support
 - PWM outputs on all pins
 - 6X 12-Bit Analog Inputs
 - 1X 10-bit analog ouput (DAC)
 - Qwiic/STEMMA-QT connector for fast I2C connectivity
 
 ## Software Development
### StackRduino Forks and Dev Branches

- [Arduino](https://github.com/StackRduino/StackRduino_M0/tree/master/Arduino)
- [Bootloader](https://github.com/StackRduino/StackRduino_M0/tree/master/Bootloader)
- [CircuitPython](https://github.com/StackRduino/StackRduino_M0/tree/master/Circuitpython)

### Official Repositories

- [Bootloader by Adafruit](https://github.com/adafruit/uf2-samdx1/)
- [Bootloader by Microsoft](https://github.com/Microsoft/uf2-samdx1)
- [CircuitPython by Adafruit](https://github.com/adafruit/circuitpython)


## License

GNU GENERAL PUBLIC LICENSE