- 1 Header Definition
- 2 Setup environment
- 3 Demo example
- 4 Set up C/C++ Environment
Pico connection pins
|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|
|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.
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
- 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
- Align the pin header which is marked in red and then connect the RGB LED Matrix panel to the driver board.
- Cut the adapter cable (about 10cm) by plier
- 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.
- 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
- Optional: If you feel that the RGB LED Matrix is too bright, you can stick the black Acrylic font panel on the Matrix.
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.
- You can refer to the #Set up C/C++ Environment to build and program the C codes.
- 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:
- 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)
- 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
- CircuitPython is a fork of MicroPython， For specific usage, please refer to the RGB-Matrix related CircuitPython tutorial
- 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:：
- 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.
- Please make sure that you use the Newest Raspberry Pi OS and the Pi 4 is recommended.
- 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
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
- 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.