Hexagonal ATmega328P board running at 8 MHz on 2.7–5 V, with 14 digital and 6 analog GPIO and 4 switchable power ports to cut supply to peripherals. Targets battery-powered applications; sleep current drops to 0.12 µA at 3.3 V (watchdog off), giving roughly 60 days on a CR2032.
| Pin | Type |
|---|---|
| RX | UART |
| TX | UART |
| 2 | Signal |
| 3 | Signal |
| 5 | Signal |
| 9 | Signal |
| 10 | Signal |
| 11 | Signal |
| A0 | Analog |
| A1 | Analog |
| A2 | Analog |
| A3 | Analog |
| SDA | I2C |
| SCL | I2C |
| DTR | Signal |
| + | Power |
| - | Ground |
| ⊕ | Power |
| Power in | Power |
| Power out | Power |
USB · 3.3 V
Confirm the data interface matches your host board.
Module pins: +, ⊕, Power in, Power out, -, RX, TX, 2. 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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