
Low-cost 32-bit ARM Cortex-M0+ microcontroller board (48 MHz) with native USB, 13 analog inputs, and hardware touch sensing. Arduino IDE compatible.

One grouped connection is listed in the table but omitted from the graphic until individual pins are available.
| Pin | Position | Type |
|---|---|---|
| Vin (3.7-5.5V) | power rail | Power |
| GND | multiple | Ground |
| 3.3V (100mA max) | power rail | Power |
| 0-12 (digitalanalog) | 0-12 | Signal |
| 13 (LED) | 13 | Signal |
| 14-23A10-A12 etc | 14+ | Signal |
| 17-5V (buffered) | special | Signal |
| AREF | Analog |
One grouped connection is omitted from the graphic until individual pins are available.
USB · 3.3 V
Verify supply voltage and logic levels before powering up.
Module pins: Vin (3.7-5.5V), 3.3V (100mA max), GND, 0-12 (digital/analog), 13 (LED), 14-23 / A10-A12 etc, 17-5V (buffered), AREF. Schematik maps them to your board in the app.
Specialists: Teensy for high-clock audio and USB, Adafruit SAMD boards running CircuitPython or the Arduino IDE, proper STM32 eval kits, and the micro:bit classroom ecosystem. Schematik builds target ESP32, Arduino Uno, and Pico; come here when you have a specific reason to.
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