I2C Pin Out (Breakout Garden from Pimoroni)

I2C socket pin out Breakout Garden from Pimoroni

Breakout Garden Introduction

Breakout Garden – Effortless I²C Expansion
Breakout Garden by Pimoroni makes it incredibly simple to add sensors, displays, and drivers to your Raspberry Pi. No soldering, no breadboards — just plug a breakout board into a slot and start experimenting.


What is Breakout Garden?

Breakout Garden is a plug-and-play hardware ecosystem built around the I²C bus. Instead of wiring up pins manually, you just insert a breakout board into a slot with a standard pinout.

  • Designed for Raspberry Pi (HATs and pHATs available)
  • Uses I²C and SPI slots (today we’ll focus on I²C)
  • Slots are keyed, so you can’t plug things in the wrong way
  • Compatible with dozens of Pimoroni breakout boards

Breakout Garden I²C Pinout

Each I²C slot on Breakout Garden uses a 5-pin connector arranged as:

  • Pin 1 – 3V3 Power
  • Pin 2 – SDA (I²C Data)
  • Pin 3 – SCL (I²C Clock)
  • Pin 4 – INT (Interrupt / Optional)
  • Pin 5 – GND (Ground)

Tip: Most I²C breakouts only use the four pins (3V3, SDA, SCL, GND). The INT pin is for boards that need interrupt signalling (e.g., IMU sensors). The keyed socket ensures you can’t insert a board backwards — it’s foolproof I²C expansion.


Why Breakout Garden?

  • 🌱 No soldering – boards just slot in
  • 🌱 Foolproof design – keyed connectors prevent mistakes
  • 🌱 Hot-swappable – swap sensors without rebooting
  • 🌱 Huge ecosystem – dozens of Pimoroni breakouts ready to go

Breakout Garden connector details

The Breakout Garden socket is a 5-pin female connector designed for plug-and-play breakouts.

The sockets are 0.1″ pitch, 5 pin connectors for their Breakout Garden slots.

Socket

Breakout Garden Socket

Edge Connector

Breakout Garden Edge Connector

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