Configure Sensitivity on LD2410

LD2410 Boards

How To Configure Sensitivity on a LD2410 Presence Sensor

This guide explains how to change the default sensitivity for the LD2410 Presence Sensor. This is the sensitivity for the OUTPUT pin that returns 5v when presence is detected and 0v when there are no detections. Allowing for standalone use.

1. Setup

If you already have the device running, you can skip this step

set up an Arduino sketch
Add this library
Follow the example code in the repo.

2. Configuration

Once you have your device connected to your board, we will run the following command on our setup (the sensor remembers the configuration, so this could be done a single time)

radar.setGateSensitivityThreshold(7, 15, 5);

with the arguments (numbers) being:

Gate to configure (0 - 8)
Moving target sensitivity (0 - 100) (0 = most sensitive, 100 = least sensitive)
Stationary target sensitivity (0 - 100) (0 = most sensitive, 100 = least sensitive)

Each gate represents a distance range and has a default sensitivity as shown in this table

GATE NUMBER	DISTANCE (METER/FEET)	DEFAULT MOVE THRESHOLD	DEFAULT STILL THRESHOLD
0	0m / 0'	50	0
1	0 - 0.75m / 0 - 2.46'	50	0
2	0.75 - 1.5m / 2.46' - 4.92'	40	40
3	1.5 - 2.25m / 4.92' - 7.38'	40	40
4	2.25 - 3m / 7.38' - 9.84'	40	40
5	3 - 3.75m / 9.84' - 12.30'	40	40
6	3.75 - 4.5m / 12.30' - 14.76'	30	15
7	4.5 - 5.25m / 14.76' - 17.22'	30	15
8	5.25 - 6m / 17.22' - 19.68'	30	15

3. Done

Now you can test the new configuration.