Adafruit Proto Under Plate PiCowBell for Pico
The Adafruit Proto Under Plate PiCowBell is intended to be treated like a mini solder-less proto plate to simplify programming and sensor connectivity for your Raspberry Pi Pico board. Reset button? Yes! STEMMA QT / Qwiic connector for fast I2C? Indeed.
Pinout
- 2x20 Pico socket headersdual 2x20 slim socket headers
Main Raspberry Pi Pico socket interface; plug in a Pico and access each Pico pin through an extra row of sockets.
Type · board connector - STEMMA QT / Qwiic 3VJST-SH connector
3V supply on the right-angle JST-SH STEMMA QT/Qwiic connector.
Type · powerVoltage · 3V - STEMMA QT / Qwiic GNDJST-SH connector
Ground on the right-angle JST-SH STEMMA QT/Qwiic connector.
Type · groundVoltage · 0V reference - STEMMA QT / Qwiic SDA / IO4JST-SH connector
I2C data on the STEMMA QT/Qwiic connector, mapped by Adafruit to Pico IO4.
Type · i2c - STEMMA QT / Qwiic SCL / IO5JST-SH connector
I2C clock on the STEMMA QT/Qwiic connector, mapped by Adafruit to Pico IO5.
Type · i2c - I2C breakout holesbeside JST-SH connector
Extra set of four breakout holes next to the JST-SH connector for additional I2C connections or reassignment.
Type · board connector - Resetboard edge
Right-angle reset button that sticks out from the end of the board.
Type · control - 3.3V stripproto area
Long strip of connected holes for 3.3V power.
Type · powerVoltage · 3.3V - GND stripnear reset button
Ground pads and long ground strip identified by Adafruit near the reset button.
Type · groundVoltage · 0V reference - Proto stripscentre proto area
Three hole-connected strips in the centre area, intended as a mini solderless proto area with cuttable traces.
Type · prototyping
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| 2x20 Pico socket headers | dual 2x20 slim socket headers | board connector | Main Raspberry Pi Pico socket interface; plug in a Pico and access each Pico pin through an extra row of sockets. | |
| STEMMA QT / Qwiic 3V | JST-SH connector | power | 3V supply on the right-angle JST-SH STEMMA QT/Qwiic connector. | 3V |
| STEMMA QT / Qwiic GND | JST-SH connector | ground | Ground on the right-angle JST-SH STEMMA QT/Qwiic connector. | 0V reference |
| STEMMA QT / Qwiic SDA / IO4 | JST-SH connector | i2c | I2C data on the STEMMA QT/Qwiic connector, mapped by Adafruit to Pico IO4. | |
| STEMMA QT / Qwiic SCL / IO5 | JST-SH connector | i2c | I2C clock on the STEMMA QT/Qwiic connector, mapped by Adafruit to Pico IO5. | |
| I2C breakout holes | beside JST-SH connector | board connector | Extra set of four breakout holes next to the JST-SH connector for additional I2C connections or reassignment. | |
| Reset | board edge | control | Right-angle reset button that sticks out from the end of the board. | |
| 3.3V strip | proto area | power | Long strip of connected holes for 3.3V power. | 3.3V |
| GND strip | near reset button | ground | Ground pads and long ground strip identified by Adafruit near the reset button. | 0V reference |
| Proto strips | centre proto area | prototyping | Three hole-connected strips in the centre area, intended as a mini solderless proto area with cuttable traces. |
Start wiring
SPI · I2C · 3V · 0V reference
Confirm the data interface matches your host board.
Module pins: STEMMA QT / Qwiic 3V, 3.3V strip, STEMMA QT / Qwiic GND, GND strip, STEMMA QT / Qwiic SDA / IO4, STEMMA QT / Qwiic SCL / IO5. Schematik maps them to your board in the app.
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