Arduino Example Best _top_ | Jdy40
The JDY-40 is a versatile 2.4GHz wireless serial transceiver module that stands out for its simplicity, long-range capabilities (up to 120 meters), and built-in GPIO control modes. Unlike standard Bluetooth modules (like the HC-05) that typically have a 10m range, the JDY-40 acts more like a wireless serial cable, making it one of the best choices for long-distance Arduino projects. Key Specifications Operating Frequency: 2.4GHz Range: Up to 120 meters (line of sight)
Useful AT Commands
| Command | Function |
| :--- | :--- |
| AT | Test communication |
| AT+VERSION | Get firmware version |
| AT+DEFAULT | Reset to factory |
| AT+BAUD4 | Set baud to 9600 (4=9600, 5=19200, etc.) |
| AT+RFCH0 | Set channel (0-19) – use same on both |
| AT+ADDR0001 | Set address (0001-FFFF) – use same on both |
. 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 jdy40 arduino example best
| JDY-40 Pin | Arduino Uno | Arduino Pro Mini (3.3V) | | :--- | :--- | :--- | | VCC | 3.3V | RAW or VCC | | GND | GND | GND | | TX | Pin 2 (SoftwareSerial RX) | Pin 2 (SoftwareSerial RX) | | RX | Pin 3 (SoftwareSerial TX) | Pin 3 (SoftwareSerial TX) |
What is the JDY-40? (And Why It’s Better Than You Think)
The JDY-40 is a half-duplex, 2.4GHz wireless transceiver module. Unlike the nRF24L01, which requires managing 20+ registers via SPI, the JDY-40 communicates over UART (Serial) . To your Arduino, it looks exactly like a wire replacement. The JDY-40 is a versatile 2
The Go to product viewer dialog for this item. is a highly versatile 2.4GHz wireless serial port module that serves as an affordable alternative to the NRF24L01. It is designed for "transparent transmission," essentially acting as a wireless USB cable between microcontrollers like the Arduino. 1. Key Specifications & Performance Range: Up to 120 meters (line-of-sight).
, though many breakout boards include a regulator allowing for 5V input. For the best stability on an Arduino Uno, follow this wiring scheme: Longan Labs JDY-40 Pin Arduino Pin 3.3V or 5V Check your breakout board's requirements. Common ground is essential for signal integrity. Digital Pin 3 Connect to Arduino's TX pin (via SoftwareSerial). Digital Pin 2 Connect to Arduino's RX pin (via SoftwareSerial). GND / D-Pin Ground this pin to enter "Serial Communication Mode". Ground this pin to wake the module from sleep. It is highly valued for its simplicity, as
void loop() if (Serial.available()) String data = Serial.readStringUntil('\n'); Serial.println(data); // Send to Serial Plotter