BoardPilotHLK-LD2410C mmWave presence radar with ESP32
Supply 5 V
Bus GPIO
Measures presence, distance
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| VCC | Power | VIN | Needs 5 V: use VIN |
| GND | Ground | GND | |
| TX | Output (the part drives it) | D25 | UART: the part sends data here. Connect to an ESP32 RX pin (256000 baud) |
| RX | Input (the ESP32 drives it) | D26 | UART: the part receives data here. Connect to an ESP32 TX pin |
| OUT | Output (the part drives it) | D27 | HIGH when a person is present (3.3 V) |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
This module is sold for 5 V. Its outputs may be 5 V: use a level shifter or a voltage divider on ESP32 inputs.
Sources
- Hi-Link HLK-LD2410C user manual, Supply 5 V, UART 256000 baud, OUT pin 3.3 V
Try it in 3D in BoardPilot
Related parts
A02YYUW waterproof ultrasonic distance (UART)A3144 hall effect switchAM312 mini PIR motion sensorATGM336H GPS/BeiDou moduleBeitian BN-220 GPS moduleBenewake TF-Luna LiDAR (UART mode)
Part data: CC BY 4.0, free to reuse with credit to BoardPilot.