LD2412 is a wide-angle+long-distance human presence detection millimeter wave radar sensor. Its working principle is to use FMCW frequency modulation continuous wave to detect human targets in a set space. Combined with radar signal processing and precise human sensing algorithm, it achieves high-sensitivity human presence state sensing, can recognize human bodies in motion and stationary states, and can calculate auxiliary information such as target distance.
Mainly used in indoor scene perception areas to detect whether there are moving or micro moving human bodies, and to output real-time detection results. Max sensing distance can reach 9 meters with a distance resolution of 0.75m. Provide a visual configuration tool that can easily configure the sensing distance range, sensing sensitivity in different intervals, and unmanned delay time to meet different specific application requirements. Supports GPIO and UART connection, plug and play, flexible application in different intelligent scenarios and terminal products.

Frequency: 24G-24.25GHz
Modulation method: FMCW
Detection distance: Distance resolution 0.75m, 0.75~9m (adjustable)
Detection angle: ± 75°
Power supply: 3.3V or 5V (power supply capacity>200mA)
Current:~90mA (Typ.)
Output serial port level: 3.3V
Sweep bandwidth: 250MHz
Environmental temperature: -40°C~+85°C
Appearance size: 11 mm * 28mm
Packaging form: default with pins

OUT target status output default: detected human presence: output high level; No human presence: output low level; The output level can be configured through instructions
TX serial port Tx pin
RX serial port Rx pin
+5V power supply input 5V; Either 5V or 3.3V power supply can be chosen
3V3 power supply input 3.3V; Either 5V or 3.3V power supply can be chosen
GND power supply ground
G Power Ground