Reyax RYUW122_LITE UART Interface 6.5/8 GHz UWB Transceiver Module Lite Evaluation Board

The module is controlled via its UART interface using a set of AT commands. Connect the module's TX and RX pins to your microcontroller's UART pins. Power the module between 2.4V and 3.6V, then open a serial terminal at a baud rate between 9600 and 115200 bps (default is typically 115200). You can then send AT commands to configure parameters like the operating channel, ranging mode, and read distance measurements or device status.

The RYUW122_LITE is designed for low-power operation. Its active RF transmit current is 86 mA. Crucially, it features a deep sleep mode drawing only 2 microamperes (µA). For battery life optimization, your firmware should put the module into sleep mode via AT command when not actively ranging or communicating. Ensure your power supply can provide the necessary peak current during transmission bursts while maintaining the 2.4V to 3.6V operating voltage range.

This module supports two UWB channels compliant with worldwide regulations: Channel 5 at 6489.6 MHz (6.5 GHz) and Channel 9 at 7987.2 MHz (8 GHz). Channel selection is performed via specific AT commands sent over the UART interface. The choice depends on your regional regulations and to avoid interference with other RF systems in your deployment environment. Refer to the module's datasheet for the exact AT command syntax to read the current channel or switch between Channel 5 and Channel 9.