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Adafruit Trinket M0 - for use with CircuitPython Arduino IDE

Adafruit Trinket M0 - for use with CircuitPython Arduino IDE

We have ✅ 2 available of the AF-3500 in our Sydney warehouse. An extra 100 units available with a short lead time.

Express post delivery (2-5 business days)

The Adafruit Trinket M0 is a tiny but powerful microcontroller board built around the ATSAMD21E18 32-bit Cortex M0+ processor. It shares the same compact form factor and pinout as the original Trinket, but with a massive upgrade in processing power, memory, and connectivity — including native USB and support for both CircuitPython and the Arduino IDE.

The Trinket M0 ships with CircuitPython pre-loaded. Plug it in and it appears as a small USB drive with a main.py file — edit it with any text editor to start building your project in Python. No installs, IDE, or compiler needed, so it works on any computer including Chromebooks.

Key Features

  • ATSAMD21E18 Processor – 48 MHz 32-bit Cortex M0+, 256KB flash, 32KB RAM
  • CircuitPython & Arduino IDE – Ships with CircuitPython; also fully compatible with the Arduino IDE
  • Native USB – USB serial console, keyboard/mouse HID, and USB mass storage for Python scripts
  • 5 GPIO Pins – All independent (not shared with USB), with digital I/O and internal pull-ups/pull-downs
  • 3 Analog Inputs – 12-bit resolution on three I/O pins
  • True Analog Output – 10-bit DAC on one pin for audio playback
  • 2 PWM Outputs – For servos, LEDs, and more
  • 3 Capacitive Touch Pins – Hardware touch sensing with no additional components
  • Hardware I2C, SPI, and Serial – True hardware support (not bit-banged)
  • NeoPixel & DotStar Support – Drive 8000+ pixels from any pin, with DMA-NeoPixel support on one pin
  • Built-in LEDs – Green power LED, red pin #13 LED, and RGB DotStar LED
  • Automatic Power Switching – Powers from USB or external source, switches automatically
  • Reset Button – Restart your code or enter bootloader mode
  • Mounting Holes – For secure installation

Ideal For

  • CircuitPython and Arduino projects in a compact form factor
  • USB HID devices (custom keyboards, mice, macro pads)
  • NeoPixel and DotStar LED projects
  • Wearable electronics and embedded builds
  • Learning Python on hardware

Package Contents

  • 1× Adafruit Trinket M0 (with CircuitPython and example code pre-loaded)

Resources

The Adafruit Trinket M0 - for use with CircuitPython Arduino IDE appears in the following collections:

SKU AF-3500
by Adafruit