Datasheet

2
9
12
12
13
14
14
15
16
16
19
19
20
20
22
22
23
24
26
26
27
27
28
29
30
32
32
32
34
35
36
36
37
37
39
39
39
39
40
41
41
Guide Contents
Guide Contents
Overview
Pinouts
Power Pins
Logic pins
SPI Flash and NeoPixel
Other Pins!
Debug Interface
Assembly
Header Options!
Soldering in Plain Headers
Prepare the header strip:
Add the breakout board:
And Solder!
Soldering on Female Header
Tape In Place
Flip & Tack Solder
And Solder!
Power Management
Battery + USB Power
Power supplies
Measuring Battery
ENable pin
Arduino IDE Setup
https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
Using with Arduino IDE
Install SAMD Support
Install Adafruit SAMD
Install Drivers (Windows 7 & 8 Only)
Blink
Successful Upload
Compilation Issues
Manually bootloading
Ubuntu & Linux Issue Fix
Adapting Sketches to M0
Analog References
Pin Outputs & Pullups
Serial vs SerialUSB
AnalogWrite / PWM on Feather/Metro M0
analogWrite() PWM range
analogWrite() DAC on A0
© Adafruit Industries
https://learn.adafruit.com/adafruit-feather-m0-express-designed-for-circuit-python-
circuitpython
Page 2 of 199