CDSENet E32-433T20DT LoRa SX1278 RF Module 433MHz

Configuration is performed via AT commands sent over the UART interface. You must connect the M0 and M1 pins to specific logic levels to enter configuration mode (typically both set high). Once in this mode, use serial commands to set parameters like frequency (410-441MHz), transmit power (10-30dBm), air data rate, and other LoRa spreading factors. The exact command set is detailed in the vendor's datasheet. Always ensure you use the correct baud rate (default is often 9600) for configuration communication.

Use a stable DC power source between 2.3V and 5.5V capable of supplying bursts of up to 450mA during maximum power transmission. Connect VCC to your power supply, GND to ground, and decouple the power lines with a 10-100µF capacitor placed close to the module. For data, connect the module's TXD pin to your MCU's RXD and RXD to your MCU's TXD. The M0 and M1 pins control the operating mode and should be connected to GPIOs or pulled to VCC/GND as required. An external 433MHz antenna with an SMA connector is mandatory for operation.

Yes, integration is straightforward. For Arduino, connect the module's VCC to 3.3V or 5V (check your board's capability), GND to GND, and the TXD/RXD pins to dedicated software serial pins or the hardware UART. Use existing LoRa libraries like RadioHead or Sandeep Mistry's library, adapting them for the SX1278. For Raspberry Pi, a logic level converter is needed between the Pi's 3.3V GPIO and the module's TTL pins. You can then use Python serial libraries (pyserial) to send and receive data through the module's transparent transmission mode, treating it as a wireless serial port.