Using 5V on VCC will fry the JDY-40. Don’t do it.
// --- Configuration --- #define JDY_RX_PIN 2 // Connect to JDY-40 TX #define JDY_TX_PIN 3 // Connect to JDY-40 RX #define LED_PIN 13 // Status LED jdy40 arduino example best
: Supports transparent serial transmission (default) and a remote control mode where the 8 GPIO pins can be used without an external microcontroller. Arduino Connection Example Using 5V on VCC will fry the JDY-40
are highly recommended for beginners. These resources demonstrate how to use the Go to product viewer dialog for this item. void loop() if (jdy40
On the receiver’s Serial Monitor, you should see: Received: Button Pressed!
void loop() if (jdy40.available()) String received = jdy40.readString(); Serial.print("Received: "); Serial.println(received);
For more complex projects, you can implement a hub-and-spoke network where one central node communicates with multiple remote nodes (e.g., "uno" and "nano") Broadcast Logic