For a Raspberry Pi HUB75 RGB matrix, connect the Pi or a compatible bonnet to the panel’s INPUT data connector, then power the panel from a separate regulated 5 V supply sized for the full setup. Configure the driver for the panel’s dimensions, scan pattern, and chain layout before powering it up. HUB75 panels are not wired like MAX7219 or WS2812 matrices.
Identify the matrix interface first
This guide is for HUB75 RGB panels, which use a parallel data connector and a Raspberry Pi driver such as rpi-rgb-led-matrix. MAX7219 and WS2812 matrices use different signal arrangements and software; do not apply HUB75 pin or power instructions to them. Adafruit likewise distinguishes HUB75 RGB panels from DotStar and NeoPixel panels in its Raspberry Pi RGB Matrix HAT guide.
Before buying or wiring, check panel dimensions, scan rate, row-address inputs, connector, and whether the controller and driver support that specific panel. Raspberry Pi tutorials commonly cover 32×32 and 64×32 panels, but dimensions alone do not establish compatibility.
Choose direct GPIO or a bonnet
Direct Raspberry Pi GPIO
Direct wiring avoids a dedicated bonnet but requires accurate pin mapping and short signal wiring. The rpi-rgb-led-matrix wiring documentation says a single panel chain uses 13 I/O lines, which fit the header on older Raspberry Pi models. The signals include color data, clock, strobe/latch (often labeled LAT), output-enable, row-address lines, and ground. Follow the driver’s current pin map for your Pi and panel rather than assuming every board uses an identical connection.
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- Broad Compatibility: Designed for Raspberry Pi 3/4B+/Pico and compatible with HUB75 interface RGB LED matrix panels
- Dual Power Input: Supports Type-C (5V/4A) or DC-044 (5V/8A) for high-power applications
- Simplified Wiring: Integrates GPIO/Pico interface with HUB75 output to reduce cable complexity
- Stable Power Delivery: Dual VH-4P ports provide 5V/4A steady current per port for LED matrices
- Flexible Expansion: Features optional jumper cap to power Raspberry Pi as an all-in-one solution
Raspberry Pi bonnet or HAT
A compatible bonnet or HAT makes physical setup simpler and may provide multiple HUB75 ports. Compatibility still depends on the board’s mapping and the panel connector. Follow the bonnet maker’s assembly and software instructions; do not treat a bonnet as a power supply for the panel.
Connect the data cable to the panel INPUT
- Power down and unplug the Pi and panel supply. If using a bonnet, support the Pi and header while inserting it so the GPIO pins are not bent.
- Connect the controller’s HUB75 cable to the first panel’s INPUT. HUB75 panels commonly have separate input and output connectors. The output is for onward chaining, not the incoming Pi signal. Adafruit notes that reversing the data cable normally will not damage the matrix, but it will not work.
- Check orientation and connector seating. Match the cable and panel markings, and ensure the IDC cable is fully inserted. Do not force a misaligned connector.
- Connect ground and signal wiring as specified by the controller. Direct GPIO setups need the mapped signal lines and a common ground. Keep signal wiring short and follow the chosen driver’s wiring instructions.
For 32-row panels the address inputs commonly run A–D; a 64×64 panel typically adds an E address line. The panel’s scan arrangement determines how those row addresses select LEDs, so do not configure it from dimensions alone.
Rank #2
- Dual High-Power Input for Bright LED Matrix Panels – Utilize USB-C or DC jack to deliver stable, high-current power for your LED matrix projects and ESP32 compatible boards, ensuring vibrant displays.
- Easy HUB75 Connection to LED Screen Panels – Simplify wiring with the standard HUB75 interface for quick setup to various LED screen panel types and ESP32 development kits, enabling plug-and-play operation.
- Wide Compatibility for ESP32 and RPi Setups – Designed to fit popular ESP32 boards like ESP32-S3-DevKitC and adaptable for RPi applications, offering a versatile solution for diverse LED matrix configurations.
- Plug & Play with Secure Power Output – Features two VH-4P connectors for reliable power delivery to LED matrix panels, supporting bright LED screen panel displays without complex soldering.
- Compact Shield for Reliable LED Matrix Control – Its robust 70x60mm design ensures durable performance in driving LED matrix and LED screen panel projects with ESP32 boards and high-power needs.
Size and wire the separate 5 V supply
Use a regulated 5 V supply connected to the panel’s power input, sized for the total panel load. Power demand varies by panel and content, so the figures below are guidance for the documented setups, not universal per-panel guarantees.
| Documented setup | Power guidance | Source and qualification |
|---|---|---|
| Three-panel Raspberry Pi bonnet example | At least 5 V, 8–10 A | Adafruit Learning System hardware instructions, 2025; applies to that documented example. |
| Four to five panels | Recommended 5 V, 10 A supply; panels may draw up to 2 A each | Adafruit Learning System hardware guide, 2024; stated as guidance, with panel draw varying by use. |
Use appropriately heavy-gauge power wiring and secure connections. Adafruit warns that thin breadboard wires are too small for matrix power and can overheat. Keep panel power separate from the Pi’s GPIO data connection, and follow the panel and supply makers’ instructions for connecting power and ground.
Rank #3
- Broad Compatibility: This adapter board is designed for use with HUB75 RGB LED matrix panels, ensuring seamless integration with Raspberry Pi 3/4B+/Pico for diverse projects.
- Power Efficiency: Featuring dual power input options (Type-C and DC-044), the board delivers up to 8A of current, making it suitable for high-demand LED applications without power drops.
- Simplified Wiring: The GPIO interface connects directly to HUB75 output, reducing the complexity of wiring setups for quick assembly and installation in DIY projects.
- Stable Power Delivery: Dual VH-4P ports maintain steady currents of 5V/4A per port, providing reliability for your LED matrices while enhancing display performance.
- Flexible Expansion: An optional jumper cap allows for Raspberry Pi pairing, allowing for a streamlined all-in-one solution for creative and digital signage displays.
Chain panels and plan the physical layout
To add panels, connect the first panel’s OUTPUT to the next panel’s INPUT, then continue in sequence. The Pi’s data cable goes to the INPUT of the first panel in the chain. Set the software’s chain length and panel order to match the physical arrangement.
For the Adafruit Pi workflow, panels in a multi-panel layout should be uniform and arranged as a rectangle. More panels increase the power requirement, and long signal runs can complicate reliable operation; use short data cables and a suitable power distribution arrangement rather than assuming any chain length or cable length will work. The cited guides do not establish a universal maximum chain length or cable length.
Rank #4
- 2048 individual RGB LEDs, full-color display, adjustable brightness
- 64 × 32 pixels, 2.5mm pitch, allows displaying text, colorful image, or animation
- 160 × 80 (mm) dimensions, moderate size, suitable for DIY desktop display or wall mount display
- Onboard dual HUB75 headers, one for controller data input, one for output, chain support
- GOB technology delivers anti-collision, waterproof, moisture-proof, and dust-proof protection
Install and configure the matching driver
Use the driver and setup instructions that match the Pi, controller or bonnet, and panel. In the driver configuration, set the panel width and height, scan configuration, row-address mapping, chain length, and physical panel order. Scan depth describes how the panel’s rows are addressed and paired; a wrong scan setting can produce missing, duplicated, or scrambled rows even when the cable connections are correct.
For a bonnet, use its documented mapping rather than a direct-GPIO map. For direct GPIO, verify each assigned color, clock, latch/strobe, output-enable, address, and ground signal against the documentation. Do not guess settings based solely on the panel’s advertised resolution.
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- 2048 individual RGB LEDs, full-color display, adjustable brightness. 64×32 pixels, 2.5mm pitch, allows displaying text, colorful image, or animation.
- Compatible with Arduino/Raspberry Pi / Raspberry Pi Pico / ESP32.
- Chainable design--- multi LED matrix panel can be chained together to build a larger panel via HUB75 input/output header. Onboard two HUB75 header, one for controller data input, one for output, chain support.
- 160×80mm dimensions, moderate size, suitable for DIY desktop display or wall mount display
- Usage scenarios--- DIY maker desktop or wall mount display, signboard, environment monitor…
Power up and troubleshoot methodically
- With power disconnected, recheck the HUB75 cable direction, panel INPUT, GPIO or bonnet seating, and power polarity.
- Confirm the 5 V supply rating and wiring are appropriate for the number of panels; replace thin or loose power leads with correctly rated wiring.
- Start with one panel and the driver’s matching geometry and scan configuration. Add chained panels only after the first displays correctly.
- If the display is blank, check that the data cable is on INPUT, the driver matches the controller mapping, and the panel has its separate supply.
- If rows or colors are wrong, recheck scan configuration, row-address mapping, cable seating, and panel order before changing unrelated settings.
A reversed data connection normally results in no working display rather than damage, according to Adafruit, but disconnect power before reseating or changing cables.
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