HLK-LD2450

This is a simple Python implementation of the serial protocol and two demos of the HLK-LD2450 24 GHz Radar Sensor (http://www.hlktech.net/index.php?id=1182). You can also try the app from HLK or the official PC demo. This code uses the serial port to communicate with the sensor.

Prerequisites

You need the following hardware to run this demo:

• Linux PC (tested with Ubuntu 22.04)
• HLK-LD2450 24 GHz Radar Sensor
• USB to TTL Adapter
• 1.5 mm 4-pin cable

Connect the sensor to the USB to TTL adapter:

• GND to GND
• 5V to 5V
• RX to TX
• TX to RX

Install the required packages:

pip3 install -r  requirements.txt

Get started

print_targets.py prints out the received data from the sensor (x, y, speed, distance resolution) of three targets:

python3 print_targets.py

plot_targets.py plots the received data from the sensor (x, y) of three targets:

python3 plot_targets.py

Troubleshooting

• Check that the USB to TTL adapter is connected to the correct port:

dmesg | grep tty

Notes and Disclaimer

• There seems to be some outliers in the data which are not filtered in this implementation