Jdy40 Arduino Example Best -

The Best JDY-40 Arduino Example: Wireless Serial Communication Guide

Open your Serial Monitor at with Both NL & CR enabled. Send these commands one by one: Test communication: AT (Should return +OK ) Set Module A (Master) Device ID: AT+DVID1111 jdy40 arduino example best

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Open your Serial Monitor at with Both NL & CR enabled, then enter these commands: Test connection : Type AT -> Expected response: +OK Set Baud Rate : Type AT+BAUD4 -> Sets baud rate to 9600. Open your Serial Monitor at with Both NL

Before transmitting data, you must configure both modules to use the same channel and wireless address. Connect the pin to GND , power on the module, and use the following code to send AT commands via the Arduino Serial Monitor (set to 9600 Baud and Both NL & CR ).

: If you are looking to build a multi-node network (e.g., one hub and multiple remote nodes), Ben Emmett's JDY-40 Wireless Broadcast project provides complete Arduino and Python code examples using JSON formatting for message transmission.