Template:Pico-Pico-RGB-Matrix-P3-64x32 Manual

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Header Definition

Hardware Introduction


Pico connection pins

Board Pico Pin description
Pins used by RGB LED Matrix (HUB75 interface)
R1 GP02 R higher bit data
G1 GP03 G higher bit data
B1 GP04 B higher bit data
R2 GP05 R lower bit data
G2 GP08 G lower bit data
B2 GP09 B lower bit data
A GP10 A line selection
B GP16 B line selection
C GP18 C line selection
D GP20 D line selection
E GP22 E line selection
CLK GP11 clock input
STB/LAT GP12 latch pin
OE GP13 output enable


Board Pico Pin description
Pins used by other resources of the board
K0 GP15 KEY0 button, the MENU menu of the digital clock, can also be customized
K1 GP19 KEY1 button, + / Down button of digital clock, can also be customized
K2 GP21 KEY2 button,-/ UP button of digital clock, can also be customized
RUN RUN RESET button, can be used for Pico reset
BOOTSET BOOTSET BOOT button, can be used for Pico burning program (long press BOOT, then press RESET to enter the firmware download mode)
SDA GP06 I2C data pin, used to control DS3231 RTC clock chip
SCL GP07 I2C clock pin, used to control DS3231 RTC clock chip
BUZZ GP27 Buzzer control pin
AIN GP26 Photoresistor control pin
IRM GP28 Infrared receiving control pin

See detailed hardware design of the circuit diagram.

Setup environment

You can refer to Raspberry Pi's guide: https://www.raspberrypi.org/documentation/pico/getting-started
Or check the guide#Set up C/C++ Environment

Demo example

Hardware connection

Materials needed

  • Pico-RGB-Matrix-P3-64x32 (this product)
  • Raspberry Pi Pico (must be purchased separately, if not, it is recommended to buy a version with soldered headers, which is convenient for direct insertion and use)
  • Micro USB cable (must be purchased separately)

Hardware connection steps

  1. Align the pin header which is marked in red and then connect the RGB LED Matrix panel to the driver board.
  2. Cut the adapter cable (about 10cm) by plier
  3. Connect the cable which is cut in the last step to the RGB LED Matrix and the driver board
    Connect your Pico board to the Matrix device, please take care of the direction.
  4. Assemble the Acrylic backplane and fix it with magnetic screws
    If you need to program Pico and debug, you can skip this step first, and operate it when it is ready to use
  5. Optional: If you feel that the RGB LED Matrix is too bright, you can stick the black Acrylic font panel on the Matrix.

Example display

Multi-Features Digital Clock

  • This example is developed based on the C++ SDK. In order to quickly demonstrate the effects and functions of the example.
  • Download the demo codes from the Resources and unzip to get the uf2 file.
  • Press and hold the BOTSEL button of your Pico, and connect it to the host PC. A portable disk RPI-RP2 will be recognized
  • Copy the uf2 file to the Pico (RPI-RP2) and it will reconnect automatically.
  • After the burning is completed, the running effect of the example is shown in the figure below:


【Function Description】

  • Time display screen:
    • Display date, day of the week, hour, minute, lunar calendar and temperature
  • Function setting menu
    • Date setting
    • time setting
    • BEEP setting (buzzer setting)
    • Auto brightness
    • Language setting (under development)

Fruit machine

This example is developed based on CircuitPython[1] , and the program is downloaded[2] . The effects and functions of the example are as follows:


【Function Description】

  • The display can display a variety of fruits or other small BMP icons
  • Automatically scroll icons at regular intervals, and randomly display the results of the scrolling
  1. CircuitPython is a fork of MicroPython, For specific usage, please refer to the RGB-Matrix related CircuitPython tutorial
  2. Pico must first install CircuitPython,and then copy the corresponding CircuitPythond code to the recognized U disk to complete the download.

Infrared transceiver test

This example is developed based on MicroPython, the program is downloaded , the example effects and functions are as follows::


【Function Description】

  • The infrared serial code generated by the corresponding button of the infrared remote control can be recognized

Set up C/C++ Environment

You can program the Pico with Raspberry Pi or Windows PC.
You can directly refer to the Offical manual of Raspberry Pi.

Raspberry Pi

  • Please make sure that you use the Newest Raspberry Pi OS and the Pi 4 is recommended.

Pico SDK

  • Open the terminal of the Raspberry Pi
  • Run the following commands to get the SDK
cd ~/
mkdir pico
cd pico
git clone -b master https://github.com/raspberrypi/pico-sdk.git
cd pico-sdk
git submodule update --init
  • Install the ToolChain
sudo apt update
sudo apt install cmake gcc-arm-none-eabi libnewlib-arm-none-eabi build-essential
  • [Optional] If you want to update the SDK, you can run the following commands:
cd ~/pico/pico-sdk
git pull
git submodule update

Pico Examples

Here we use the pico-examples of Raspberry Pi for examples

  • Download the examples
cd ~/pico
git clone -b master https://github.com/raspberrypi/pico-examples.git
  • Create build directory for Blink example
cd ~/pico/pico-examples
mkdir build
cd build
  • Set the PICO_SDK_PATH
    • Note that the path of the SDK maybe different according to the directory you saved
    • If you follow this guide step by step, the relative path of the SDK should be ../../pico-sdk and the absolute path should be ~/pico/pico-sdk
    • If you change the path of the sdk, please use the correct path
export PICO_SDK_PATH=../../pico-sdk
  • Build the example
cmake ..
make -j4
  • After building, a .uf2 file and a .elf file are generated
  • Press and hold the BOOTSEL button of the pico and connect it to Raspberry Pi by USB cable
  • A portable disk RPI-RP2 is recognized, copy the .uf2 file to the RPi-RP2
  • Pico will reboot and run the codes.