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Small green circuit board with 25 square RGB LEDs in a 5 by 5 grid, 15 by 15 millimetre active area, 3.5 millimetre pitch

Pimoroni

Pimoroni PIM435 5x5 RGB Matrix Breakout development board

SKU CH-N71F-WXBGS

A 5x5 RGB LED matrix breakout with 25 individually addressable pixels controlled via I2C at addresses 0x74 or 0x77, compatible with Raspberry Pi and Arduino

  • 25 RGB LEDs visualise sensor data in a compact grid
  • IS31FL3731 driver chip controls each LED individually over I2C
  • Works with 3.3 V or 5 V logic without extra level-shifting
  • Cuttable trace changes I2C address from 0x74 to 0x77 for dual-matrix projects
  • Python library and examples included for Raspberry Pi and Arduino

5x5 RGB Matrix Breakout

The Pimoroni PIM435 is a compact development board that carries a 5x5 grid of RGB LEDs driven by an IS31FL3731 chip. It connects through I2C at address 0x74, with a cuttable trace to shift to 0x77. The board works at 3.3 V or 5 V and includes reverse polarity protection. A Python library and examples are supplied for Raspberry Pi and Arduino.

Makers visualising sensor data

This board suits hobbyists who want a small, addressable display for environmental readings such as temperature or pressure from compatible sensors. It plugs directly onto the bottom-left GPIO pins of any Raspberry Pi model once the included right-angle female header is soldered. Builders needing higher resolution graphics, video output, or wireless connectivity should consider other display options.

Dual-matrix I2C address selection

The single specification that decides fit is the selectable I2C address: the default 0x74 can be changed to 0x77 by cutting a trace on the board. This allows two matrices to share the same bus without conflict. If your project requires only one matrix or uses a different address scheme, the feature is optional but does not prevent use.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 93% of the 1,420 comparable items (median $44.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What does the 25 RGB LED count mean for real-world display capability?

The 5x5 grid provides 25 individually addressable RGB LEDs in a 15x15mm active area with 3.5mm pitch, suitable for simple graphics, sensor readouts or scrolling text.

How does the I2C interface at addresses 0x74 or 0x77 affect connecting multiple boards?

The IS31FL3731 driver uses I2C at 0x74 by default; cutting the onboard trace changes it to 0x77 so two matrices can share the same bus without address conflict.

What physical mounting does the included right-angle female header provide for a Raspberry Pi?

Solder the supplied right-angle female header to the breakout, then press it onto the bottom-left five GPIO pins (1, 3, 5, 7, 9) for a direct, solderless Pi connection.

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