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Description
BMT LD2410C 24GHZ RADAR SENSORThe LD2410C is a High Sensitivity 24GHz Radar Human Presence Status Sensing Module Radar Human Presence Status Sensing Module Overview This article is about the usage of the LD2410 Human Presence Detection Sensor with ESP32. Earlier we used motion detection sensors like PIR Sensor to detect motion when any object is moving. The PIR Sensor works by measuring the infrared (IR) light emitted from, or reflected by, that object. The Hi Link LD2410 mmWave
Radar Human Presence Status Sensing Module
Overview
This article is about the usage of the LD2410 Human Presence Detection Sensor with ESP32. Earlier we used motion detection sensors like PIR Sensor to detect motion when any object is moving. The PIR Sensor works by measuring the infrared (IR) light emitted from, or reflected by, that object.
The Hi-Link LD2410 mmWave radar sensor is a game-changer for precise human presence detection. Unlike traditional PIR sensors that only trigger on movement, the LD2410 detects both stationary occupants (e.g., someone sitting or sleeping) and motion. This makes it ideal for automation scenarios where accuracy is critical.
In this tutorial, we’ll understand the LD2410 capabilities by interfacing it with an ESP32 microcontroller. We will create a versatile Human Presence Detection System. The setup includes two LEDs: a red LED to signal when a person is stationary (at rest) and a green LED to indicate active motion. Additionally, real-time detection data, including distance metrics (up to 6 meters), will be displayed on a 0.96-inch OLED screen, providing immediate visual feedback. A 60GHz mmWave sensor called C1001 is also available in market, which is more advanced.
Features
- Adjustable sensitivity zones.
- Visual configuration tools (PC/mobile app).
- OTA firmware updates via Bluetooth.
Applications & Use
- Smart Lighting: Auto-control lights based on human presence.
- Security Systems: Detect intrusions or unauthorized presence.
- Appliance Control: Wake/sleep TVs, ACs, or displays when humans enter/leave.
- Safety Systems: Prevent UV lamp activation when humans are nearby.
- Installation: Wall/ceiling-mounted; works through non-metallic materials (plastic, glass).
Note: The LD2410C’s Bluetooth support enables wireless tuning via the HLKRadarTools app, distinguishing it from the LD2410B/S models. Refer to LD2410C Datasheet for more detailed information.
To start:
- Open one of the tools.
- Set the correct baud rate (usually 256,000) and select the right COM port (as configured earlier).
- Click “Start” to begin receiving data.
Specifications
- Detection Range: 0.75–6 meters (adjustable).
- Angular Coverage: ±60° horizontal.
- Communication: UART (256000 baud), GPIO, Bluetooth (BLE) for configuration.
- Power: 5V DC, ~79mA average current.
- Dimensions: 16mm × 22mm.
Downloads
Additional Information
| Device | Sensing Module |
| Type | Radar | Human | Presence Status |
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