This feature allows you to build complex systems like a multi-room sensor network where only the intended node responds to a query.
SoftwareSerial jdy(2, 3); // RX on pin 2, TX on pin 3 jdy40 arduino example best
AT+DVID (Default is 2453 ). Both modules must match. This feature allows you to build complex systems
Because the JDY-40 operates on , connecting its RXD pin directly to a 5V Arduino (like the Uno or Nano) can damage the module or cause unstable behavior. Always use a logic level shifter or a simple resistor voltage divider on the Arduino's TX line. Hardware Connections: JDY-40 VCC →right arrow Arduino 3.3V JDY-40 GND →right arrow Arduino GND JDY-40 TXD →right arrow Arduino Pin 2 (Software RX) JDY-40 RXD →right arrow Through a voltage divider to Arduino Pin 3 (Software TX) Voltage divider tip: Connect Arduino Pin 3 to a 1k Ωcap omega Because the JDY-40 operates on , connecting its
The is a 2.4GHz wireless serial transceiver module that acts as a "wireless USB cable," making it much easier to use than the NRF24L01 because it handles the complex radio protocol internally. You simply send and receive data using standard UART (Serial) commands. Quick Setup & Best Wiring
JDY-40 Arduino Guide: Best Examples and Setup The is a highly affordable, versatile 2.4GHz wireless serial port transparent transmission module . It operates similarly to Bluetooth or HC-12 modules but at a fraction of the cost, making it the best choice for budget-friendly Arduino telemetry, remote control, and sensor networks.
Here’s a more useful example: a remote temperature sensor.