UWB Distance Monitoring and Alert System Using Arduino and REYAX RYUW122_Lite

Hi everyone,

I’ve recently been experimenting with Ultra-Wideband (UWB) technology and built a simple distance monitoring and alert system using an Arduino UNO and two REYAX RYUW122_Lite UWB modules.

The idea was to measure the distance between two points wirelessly and generate an alert when they move beyond a predefined limit.

How the Project Works?

The setup uses one RYUW122_Lite module as an Anchor and the other as a Tag. The Anchor communicates with the Arduino UNO to obtain the distance measurement, which is displayed on a 16×2 I2C LCD. I’ve also added a buzzer that activates when the measured distance exceeds 200 cm.

This project helped me explore UWB-based ranging and understand how it could be used for proximity detection and distance-based automation.

What Could Be Improved?

At the moment, this is a basic distance monitoring system, and I’d like to extend it into something more practical.

Some ideas I’m considering include:

• Using multiple Anchors to estimate the position of a Tag.

• Exploring indoor positioning and asset tracking.

• Improving the alert system with configurable distance thresholds.

• Investigating how walls, obstacles, and module placement affect measurement accuracy.

• Integrating the system with an ESP32 for wireless monitoring or data logging.

I’d love to hear suggestions from the community.

Thanks! I look forward to your ideas and feedback.