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void loop() int sensorValue = analogRead(A0); // Read potentiometer (0-1023) jdySerial.println(sensorValue); // Send data to receiver Serial.print("Sent: "); Serial.println(sensorValue); delay(1000);
2.2V to 3.6V (Note: 5V may damage the module; use a voltage regulator if needed). jdy40 arduino example best
Because AT commands take only a few milliseconds, this method works well for low‑duty‑cycle applications.
1200 bps to 115200 bps (Default is 9600 bps) Communication Distance: Up to 120 meters in open spaces : void loop() int sensorValue = analogRead(A0); //
. It is highly valued for its simplicity, as it uses a standard UART interface that can be controlled with basic serial commands on an Arduino MSS Eletrônica 1. Hardware Setup & Pinout operates on iFuture Technology . Connecting it to a 5V source may damage the module : 2.2V to 3.6V MSS Eletrônica : System ground. : Connect to the Arduino's RX/TX pins (cross-connected) iFuture Technology
digitalWrite(2, LOW); // Enter AT mode digitalWrite(3, LOW); // Wake module (CS low) It is highly valued for its simplicity, as
: The JDY-40 pulls spikes of current during transmission. If the connection drops unexpectedly, place a 10µF to 100µF capacitor across the VCC and GND pins of the JDY-40 to smooth out power delivery.
Ensure your jdyRadio.begin() matches the baud rate set inside the flash memory of the JDY-40. The physical default from the factory is 9600 (AT+BAUD4).
Pull LOW to enable module; pull HIGH to enter deep sleep mode Wiring the JDY-40 to Arduino