Jdy40 Arduino Example Best -

Expected Response: +OK (Sets the communication channel to 05. Match this on both modules) Type AT+BAUD4 →right arrow

#include SoftwareSerial jdySerial(2, 3); // RX, TX void setup() Serial.begin(9600); jdySerial.begin(9600); Serial.println("JDY-40 AT Command Mode Ready."); void loop() if (jdySerial.available()) Serial.write(jdySerial.read()); if (Serial.available()) jdySerial.write(Serial.read()); Use code with caution. Essential AT Commands for Pairing

void loop() float h = dht.readHumidity(); float t = dht.readTemperature(); jdy40 arduino example best

// Poll remote node 2 setRemoteID(2); Serial.println("STATUS"); // ... and so on.

// Detect falling edge (button press) if (buttonState == LOW && lastButtonState == HIGH) jdy40.println("Button Pressed!"); Serial.println("Sent: Button Pressed!"); delay(100); // Debounce Expected Response: +OK (Sets the communication channel to 05

: Use one master controller (like an Arduino with a joystick) to send different commands to multiple "follower" robots simultaneously. Common Configuration Commands

void loop() if (bluetooth.available() > 0) char data = bluetooth.read(); Serial.print("Received: "); Serial.println(data); and so on

: Send AT+BAUD4 -> Sets baud rate to 9600 (Default).

Same as above, but you'll open the Serial Monitor.

Video #257: Serial Wireless Comms for Arduino (et al) - GitHub

| Arduino Pin | JDY-40 Pin | | :--- | :--- | | 3.3V | VCC | | GND | GND | | TX (Pin 1) | RX | | RX (Pin 0) | TX |