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Arduino UNO R4 WiFi
Arduino

Arduino UNO R4 WiFi

Renesas RA4M1 (Cortex-M4 48 MHz, 256 KB Flash, 32 KB SRAM) mit onboard 12x8 LED-Matrix, ESP32-S3 WiFi/BLE-Coprozessor und Qwiic-Anschluss. 5V-Signalpegel an den UNO-Headers über Level Shifter; intern ist der RA4M1 ein 3,3V-Chip.

Compile-Ziel (FQBN): arduino:renesas_uno:unor4wifi Pinbelegung: 31

Pinbelegung — Arduino UNO R4 WiFi

Pin Signal Beschreibung
AREF reference Analog reference voltage for the ADC; usually externally filtered or left unused
GND ground Ground return for signals and power
D13 digital Digital I/O, also the onboard LED/SCK-capable pin
D12 digital Digital I/O; commonly used as SPI MISO
D11 PWM Digital I/O; PWM-capable and commonly used as SPI MOSI
D10 PWM Digital I/O; PWM-capable and often used as SPI chip select
D9 PWM Digital I/O; PWM-capable general-purpose pin
D8 digital Digital I/O; general-purpose pin
D7 digital Digital I/O; general-purpose pin
D6 PWM Digital I/O; PWM-capable general-purpose pin
D5 PWM Digital I/O; PWM-capable general-purpose pin
D4 digital Digital I/O; general-purpose pin
D3 PWM Digital I/O; PWM-capable general-purpose pin
D2 interrupt Digital I/O; interrupt-capable general-purpose pin
IOREF reference Board I/O voltage reference; indicates 5V-level UNO header logic
RESET reset Active-low reset input for the RA4M1 and board logic
3.3V power-low Regulated 3.3V output for low-power peripherals
5V power 5V supply rail for external shields and devices
GND.1 ground Ground return for power and signals
GND.2 ground Ground return for power and signals
VIN power-high External input supply for the onboard regulator
A0 analog Analog input to the RA4M1 ADC; also usable as digital I/O
A1 analog Analog input to the RA4M1 ADC; also usable as digital I/O
A2 analog Analog input to the RA4M1 ADC; also usable as digital I/O
A3 analog Analog input to the RA4M1 ADC; also usable as digital I/O
A4 SDA Analog input and shared I2C SDA line; also on the Qwiic connector
A5 SCL Analog input and shared I2C SCL line; also on the Qwiic connector
D1 TX Digital I/O; igeneral-purpose pin; TX
D0 RX Digital I/O; igeneral-purpose pin; RX
SCL SCL Analog input and shared I2C SCL line; also on the Qwiic connector
SDA SDA Analog input and shared I2C SDA line; also on the Qwiic connector

Hinweise zur Verdrahtung

Die Headers verhalten sich elektrisch wie 5V (Level Shifter auf 3,3V intern). Die onboard LED-Matrix ist eine separate Hardware-Komponente, die du mit Arduino_LED_Matrix ansteuerst; nicht als externe Komponente verdrahten. Der Qwiic-Anschluss teilt SDA/SCL mit A4/A5.

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