Jdy40 Arduino Example Best -

: If you experience data loss, ensure modules are within 6 channels of each other or use data integrity checks (like checksums) in your code.

: Support for transparent transmission, IO switching, and remote control. Best Getting Started Example: Two-Way Serial Chat

Have you used the JDY-40? What project are you building? Let me know in the comments!

To interface the JDY-40 with an Arduino (like a Nano or Uno), use the following wiring scheme. Note that the module is ; applying 5V to the data pins without a level shifter can damage it. JDY-40 Pin Arduino Pin Description VCC Power supply (2.2V - 3.6V) GND Common Ground RXD TX (e.g., D3*) Data receive pin (3.3V logic) TXD RX (e.g., D2*) Data transmit pin SET D4 / GND / 3.3V LOW for AT Mode; HIGH for Communication Mode CS Chip Select; LOW to keep the module active