Adafruit
32x32 RGB LED Matrix Panel - 4mm Pitch
A 32×32 full-colour RGB LED matrix panel with 1024 LEDs at 4mm pitch, measuring approximately 5 inches (128mm) square. These panels are commonly used in vide...
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A 32×32 full-colour RGB LED matrix panel with 1024 LEDs at 4mm pitch, measuring approximately 5 inches (128mm) square. These panels are commonly used in video walls and signage, delivering bright, vivid colours with good white balance uniformity. On the back, dual IDC connectors (input and output) allow panels to be chained for larger displays.
The panel uses a 1:16 scan rate with 12 × 16-bit latches. It requires 13 digital pins (6 data + 7 control) and continuous redrawing to achieve PWM colour — on a 16 MHz Arduino, 12-bit colour (4096 colours) is achievable at ~40% CPU usage. Higher-performance controllers (FPGA, Raspberry Pi, Propeller) can drive these panels to their full potential.
Key Features
- 1024 RGB LEDs – 32×32 pixel resolution at 4mm pitch
- 12-Bit Colour on Arduino – 4096 colours with example library code
- Chainable – Dual IDC input/output connectors
- Pre-White Balanced – Good colour uniformity across the panel
- Compact – ~128 × 128mm (5 × 5 inches)
Specifications
- Resolution – 32 × 32 pixels (1024 total)
- Pixel Pitch – 4mm
- Scan Rate – 1:16
- Operating Voltage – 5V DC
- Current Draw – Up to 4A per panel
- Digital Pins Required – 13 (6 data + 7 control)
- RAM Required (Arduino) – ~1600 bytes for 12-bit colour buffer
Ideal For
- LED video walls and signage projects
- Arduino, Raspberry Pi, and FPGA display projects
- Animations, graphics, and text displays
Package Contents
- 1× 32×32 RGB LED Matrix Panel
- 2× IDC cables
- 1× Power cable
- 4× Mounting screws with mini-magnets
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- RAM
- RAM (random-access memory) is fast, temporary memory a device uses for working data while it is running; in its common volatile form, its contents are lost when power is removed. Some devices offer a mode that applies settings to RAM only, which is handy for testing changes temporarily because they are not stored permanently and disappear at power-off.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
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Related Tutorials
Free guides on learn.littlebird.com.au
