Arduino UNO R4 Tutorial - Matrix LED

2，Compilation and Testing of LED Example

2.1】 When using the Arduino UNO R4 WIFI board for the first time and there is no serial port displayed upon inserting the USB cable,

Please wait for a while as the computer will automatically install the Arduino UNO R4 WIFI driver.

2.2】 After the driver installation is complete, click on COM Port.

2.3】 Test the display effect of the matrix LED:Click on the built-in matrix LED example provided by the official Arduino IDE.

TAG： LCD Screen Driver Board Pi5 Active Cooler RP2040-Keyboard-3 ESP32 C3 Round LCD Development Board Electronic EYE 0.71 inch Display Watch Screen GC9D01 160x160 ESP32 S3 LCD 1.3 inch Holographic Display Screen 1.3inch 3D Transparent Refractive Prism Mini TV For Arduino Sipeed NanoCluster Mini Cluster Board mini data center For Raspberry Pi CM45 / Computer /LM3H /M4N WiFi Wireless ESP32 DDSM Motor Driver HAT For Direct Drive Servo Hub Motors For Raspberry Pi Raspberry Pi Pico RP2040 1.69 inch TouchScreen Round LCD Display With QMI8658/Buzzer/RTC For Arduino Arduino board manager tutorial User Guide ESP32 C3 ST7735 ESP32 C3 LCD STM32 0.85inch LCD ESP32 P4 Development Board WIFI6 4 inch LCD Round Display 4inch TouchScreen 720×720 Dual Microphones USB To CAN ESP32 S3 LCD Development Board 1.3 inch Display 1.3inch Screen ST7789 240x240 Mini TV SD-Port QST QMI8658 Gyro Sensor LVGL For Arduino Raspberry Pi DSI 800×480 Raspberry Pi RP2040 LoRa-HF ESP32 desktop trinket Industrial CAN FD RS232/RS485 bidirectional converter CAN2.0A/B Jetson Orin NX

TAG： 360° Sensor Supports 6V~24V Solar Panel Milk V Duo ADXL357BEZ Core3566002032 Raspberry Pi 5 POE Raspberry Pi 4 Camera ESP32-S3 Raspberry Pi UPS Retail electronic Tag GC9A01 Milk-V Duo Distributor HDMI to LVDS Raspberry Pi 14 inch TypeC Monitor DisplayScreen Computer PC 1920x1200 MPW2.5G Raspberry Pi 5 PCIe WiFi 7 2.5G Ethernet RJ45 RTL8125 WiFi7 WiFi6 WiFi5 Raspberry Pi display Arduino 1.54inch OLED Milk V Duo LoRa32 V3 ESP32-S3 LoRa OLED SX1262 Meshtastic Arduino Industrial USB 8CH TTL Converter UART Multi Protection Circuits Multi Systems