Jdy40 Arduino Example Best -

I can provide tailored modifications to the code to match your specific setup. Share public link

Load the following setup sketch onto your Arduino. Open the Serial Monitor at , and set the line ending option to Both NL & CR .

3. The Best JDY-40 Arduino Example: Transparent Transmission jdy40 arduino example best

void loop() // Data from PC to Arduino (to be sent wirelessly) if (Serial.available()) char c = Serial.read(); Serial1.write(c); // Forward data from PC to the wireless link

23 mA average during continuous transmission. I can provide tailored modifications to the code

void setup() Serial.begin(9600); // Start serial communication pinMode(3, OUTPUT); // Control SET pin digitalWrite(3, LOW); // Pull SET low to enter AT mode delay(300); // Wait for module to be ready Serial.println("AT+CLSSA0"); // Send AT command delay(300); digitalWrite(3, HIGH); // Pull SET high to exit AT mode

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The JDY-40 module provides a beginner-friendly way to add wireless serial communication to Arduino projects. With auto-pairing and transparent UART interface, a functional link can be implemented in less than 10 lines of code. Its limitations (half-duplex, moderate range) are acceptable for many educational and hobbyist applications.