Example Best |work| | Jdy40 Arduino

The JDY-40 is a 2.4GHz wireless serial module often used as a "wireless serial cable" for Arduinos. It operates at 3.3V and supports a range of up to 120–150 meters. 1. Circuit Connections

void setup() Serial.begin(9600); jdy.begin(9600); Serial.println("JDY-40 Receiver Waiting...");

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Review — jdy40 Arduino Example (best)

Summary

The most reliable way to use the JDY-40 is as a transparent serial bridge. This allows you to send data from one Arduino and receive it on another as if they were connected by a wire. Transmitter/Receiver Sketch (Generic): jdy40 arduino example best

Pull LOW to enter AT command mode; leave HIGH/Floating for communication. 2. Arduino Code Flash this same code to Arduino boards.

AT+CLSS: Changes operating mode. A0 is standard transparent serial, while C0-C5 are for remote GPIO control. 4. Pro Tips for Better Reliability The JDY-40 is a 2

The JDY-40 is a 3.3V device. While its serial pins (RX/TX) are often tolerant to 5V Arduino logic, you must power it with 3.3V. JDY-40 Pin Arduino Pin Description VCC Power Supply (2.2V - 3.6V) GND RXD Pin 11 (SoftSerial TX) Serial input to module TXD Pin 10 (SoftSerial RX) Serial output from module SET Pin 9 (or GND for AT) Low (GND): AT Command mode; High: Data mode CS Low: Awake; High: Sleep mode 2. Best Code Example: Transparent Serial