Adafruit M0 Express - Python & Arduino

The Adafruit ItsyBitsy M0 Express is smaller than a Feather but larger than a Trinket. Small, powerful, with an ATSAMD21 Cortex M0 processor running at 48 MHz - this microcontroller board is perfect when you want something very compact, but still with a number of pins.

ItsyBitsy M0 Express is only 1.4" long by 0.7" wide, but has 6 power pins, 23 digital GPIO pins (12 of which can be analog in, 1x analog out, and 13x PWM out). It's the same chip as the Arduino Zero and packs much of the same capability as an Adafruit Metro M0 Express or Feather M0 Express but smaller. So it's great once you've finished up a prototype on a Metro M0 or Feather M0, and want to make the project much smaller. It even comes with 2MB of SPI Flash built in, for data logging, file storage, or CircuitPython code.

The most exciting part of the ItsyBitsy M0 is that while you can use it with the Arduino IDE, it is shipped it with CircuitPython on board. When you plug it in, it will show up as a very small disk drive with main.py on it. Edit main.py with your favorite text editor to build your project using Python, the most popular programming language. No installs, IDE or compiler needed, so you can use it on any computer, even ChromeBooks or computers you can't install software on. When you're done, unplug the Itsy' and your code will go with you.

Product Video

Quick Spec

• Same size, form-factor as the ItsyBisty 32u4, and nearly-indentical pinout as ItsyBitsy 32u4 3.3V
• ATSAMD21G18 32-bit Cortex M0+ with 256KB Flash and 32 KB RAM
• 3.3V logic, 48 MHz, 32 bit processor
• 2 MB SPI FLASH chip for storing files and CircuitPython code storage
• Native USB supported by every OS - can be used in Arduino or CircuitPython as USB serial console, Keyboard/Mouse HID, even a little disk drive for storing Python scripts
• Can be used with Arduino IDE or CircuitPython
• Built in red pin #13 LED
• Built in RGB DotStar LED
• Tons of GPIO! 23 x GPIO pins with following capabilities:
• 1 x True analog output pin - can be used to play 10-bit quality audio clips
• 13 x PWM outputs - for servos, LEDs, etc
• 12 x 12-bit analog inputs
• 8 x Hardware capacitive touch sensors with no additional components required
• 1 x Special Vhigh output pin gives you the higher voltage from VBAT or VUSB, for driving NeoPixels, servos, and other high-current devices. Digital 5 level-shifted output for high-voltage logic level output
• Can drive NeoPixels or DotStars on any pins, with enough memory to drive 8000+ pixels. DMA-NeoPixel support on the VHigh pin so you can drive pixels without having to spend any processor time on it
• Native hardware SPI, I2C and Serial all available
• Reset button and pin
• Power with either USB or external output (such as a battery) - it'll automatically switch over
• Dimensions: 36.0mm x 17.8mm x 4.3mm / 1.4" x 0.7" x 0.2"

Resources

• Product Page
• Pinouts
• Product Overview

Shipping List

• 1 x Adafruit M0 Express - Python & Arduino