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  1. Parts
  2. /Boards
  3. /Pico & RP2040 boards

Adafruit Proto Under Plate PiCowBell for Pico

OverviewPinoutAlternatesRelated groups
Adafruit Proto Under Plate PiCowBell for Pico generated catalogue visual
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STEPSTL

Solder-free proto plate for Raspberry Pi Pico/Pico H, adding a reset button and a STEMMA QT / Qwiic I2C connector. Mounts under the Pico on a breadboard. Requires Pico H or Pico WH for plug-and-play use; standard Pico needs header soldering.

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

Pi Pico

43 other options

The Raspberry Pi MCU line — Pico, Pico 2, and third-party boards on the same silicon — plus a deep bench of Pico-pinout displays, loggers, and radio modules that do nothing without a Pico plugged in.

View all 43
  • Adafruit DVI Breakout Board for HDMI Source Devices visual preview

    Adafruit DVI Breakout Board for HDMI Source Devices

Related groups

4 groups
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Arduino

About 75 boards across every Arduino generation: 5V Uno/Mega/GIGA, 3.3V MKR and Portenta, plus DFRduino and Bluno compatibles. Confirm the voltage rail before stacking any shield.

Boards · Arduino boards · 76 parts

10 I/Os Relay Module - CPU ESP32 (Relay Output) visual preview
Adafruit ESP32 Feather V2 w.FL Antenna - 8MB Flash + 2MB PSRAM visual preview
Adafruit ESP32-C6 Feather - STEMMA QT visual preview
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ESP32

Wi-Fi and Bluetooth on a single chip, in every shape from Espressif DevKitC to Adafruit Feathers with STEMMA QT, DFRobot FireBeetles tuned for battery life, and Seeed XIAOs under a thumbnail.

Boards · ESP32 boards · 111 parts

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15x7 CharliePlex LED Matrix FeatherWing - Warm White visual preview
16-Ch High Current Driver Shield Kit v2 visual preview
19V 90W AC/DC Adapter for LattePanda Mu Full-Function EVA Carrier Board visual preview

Add-ons

About 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.

Boards · HATs, Shields & add-ons · 272 parts

:MOVE mini MK2 buggy kit visual preview
:VIEW text32 LCD Screen for the BBC micro:bit visual preview
16-Ch Servo Driver Breakout for micro:bit, I2C visual preview
2x40 Right Angle Edge Connector for micro:bit visual preview

Other MCUs

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.

Boards · Other MCU boards · 226 parts

Parts tray full · 5 max · remove a part to add another

Offers

  • Adafruit$4.50
  • ?DigiKey$4.50

Offers

  • Adafruit$4.50
  • ?DigiKey$4.50
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
  • PinPositionTypeFunctionVoltage
    2x20 Pico socket headersdual 2x20 slim socket headersboard connectorMain Raspberry Pi Pico socket interface; plug in a Pico and access each Pico pin through an extra row of sockets.
    STEMMA QT / Qwiic 3VJST-SH connectorpower3V supply on the right-angle JST-SH STEMMA QT/Qwiic connector.3V
    STEMMA QT / Qwiic GNDJST-SH connectorgroundGround on the right-angle JST-SH STEMMA QT/Qwiic connector.0V reference
    STEMMA QT / Qwiic SDA / IO4JST-SH connectori2cI2C data on the STEMMA QT/Qwiic connector, mapped by Adafruit to Pico IO4.
    STEMMA QT / Qwiic SCL / IO5JST-SH connectori2cI2C clock on the STEMMA QT/Qwiic connector, mapped by Adafruit to Pico IO5.
    I2C breakout holesbeside JST-SH connectorboard connectorExtra set of four breakout holes next to the JST-SH connector for additional I2C connections or reassignment.
    Resetboard edgecontrolRight-angle reset button that sticks out from the end of the board.
    3.3V stripproto areapowerLong strip of connected holes for 3.3V power.3.3V
    GND stripnear reset buttongroundGround pads and long ground strip identified by Adafruit near the reset button.0V reference
    Proto stripscentre proto areaprototypingThree hole-connected strips in the centre area, intended as a mini solderless proto area with cuttable traces.
    $1.95
  • Adafruit DVI Sock for Pico - Works with HDMI Displays visual preview

    Adafruit DVI Sock for Pico - Works with HDMI Displays

    $2.95
  • Adafruit Feather RP2040 with DVI Output Port - Works with HDMI visual preview

    Adafruit Feather RP2040 with DVI Output Port - Works with HDMI

  • Adafruit MACROPAD RP2040 Bare Bones - 3x4 Keys + Encoder + OLED visual preview

    Adafruit MACROPAD RP2040 Bare Bones - 3x4 Keys + Encoder + OLED

  • Adafruit PiCowbell Adalogger for Pico visual preview

    Adafruit PiCowbell Adalogger for Pico

    $12.95
  • Adafruit PiCowBell HSTX DVI Output for Pico visual preview

    Adafruit PiCowBell HSTX DVI Output for Pico

    $6.95
  • Adafruit RP2350 22-pin FPC HSTX to DVI Adapter for HDMI Displays visual preview

    Adafruit RP2350 22-pin FPC HSTX to DVI Adapter for HDMI Displays

  • Adafruit Terminal PiCowbell for Pico visual preview

    Adafruit Terminal PiCowbell for Pico

  • Beetle RP2040 Mini Development Board visual preview

    Beetle RP2040 Mini Development Board

  • Dual GPIO Expander for Raspberry Pi Pico, Two Sets of Male Headers visual preview

    Dual GPIO Expander for Raspberry Pi Pico, Two Sets of Male Headers

  • Gravity: Expansion Board for Raspberry Pi Pico / Pico 2 visual preview

    Gravity: Expansion Board for Raspberry Pi Pico / Pico 2

  • IO Expansion Board for Raspberry Pi Pico / Pico 2 visual preview

    IO Expansion Board for Raspberry Pi Pico / Pico 2