SKU: SEN0395
This 24GHz mmWave radar sensor uses FMCW/CW multi-mode modulation and separate Tx/Rx antennas. It detects moving, micro-moving, or stationary humans (e.g., sleeping people) by emitting waves, converting reflections to signals, processing via algorithms, and solving target info. Outputs are via serial port or I/O switch. Features: high reliability, sensitivity, small size, easy to use/embed.
Downloadable Resources
1. Getting Started
This guide provides detailed instructions on installing millimeter-wave human body sensors, covering top, bottom, horizontal, and downward-tilted methods to ensure optimal sensor performance.
2. Example Code for Arduino UNO-Human Presence Detection
Read whether there is people or object moving in the detection range of the sensor. The sensor detection range and output delay time can be configured. Also you can restore the sensor to factory default settings. Experimental phenomenon: When the sensor starts successfully, 0 or 1 will be printed on the serial monitor. 0 means that there is no human or object moving in sensing area, 1 means the opposite.
3. Example Code for FireBeetle ESP32-Human Presence Detection
The article offers a comprehensive guide on implementing human presence detection using FireBeetle ESP32 and mmWave Radar, detailing hardware and software preparation, wiring diagrams, and sample code for effective motion detection.
4. Example Code for FireBeetle ESP32-C3-Human Presence Detection
This article guides you through setting up the FireBeetle ESP32-C3 with mmWave Radar for human presence detection, including hardware and software preparation, wiring instructions, and sample code for effective detection.
5. Example Code for FireBeetle ESP8266-Human Presence Detection
Detect if there is object or human motion in measuring range; Allows for configuring sensing area, sensor output delay, and resetting sensor to factory settings. Experimental phenomenon: When the sensor is enabled, print 0 or 1 on the serial port: 0 for no motion detected in the sensing area, 1 for object/human movement detected.
Reference
FAQ
Pay attention to the beam angle in the wiki page, the beam angle faces the detected problem, the antenna of the sensor faces the measured object, and the recommended beam angle: 100*40° (width*height).
Supports GPIO output, supports serial port output, and does not need pull-down resistors when outputting, and can be directly connected to the main control board.
No, the sensor detects movement of all objects within range by detecting mmWave radar and is very sensitive.
1. Due to the high sensitivity of this millimeter-wave radar sensor, please ensure that the sensor is fixed firmly when using it. When holding it, the sensor will continuously output high level due to slight shaking.
2. Please try to change the sensor measurement range in the code or serial port settings, and make sure that there is no object moving within the range, and check whether the sensor value returns to normal.
Our tutorial reveals a certain degree of penetrability for wood. However, the properties of electromagnetic waves dictate that the higher the frequency, the weaker its ability to penetrate through walls. Therefore, the 24 GHz mmWave possesses a certain degree of wall-penetrating ability, albeit not particularly strong. It is recommended to avoid thick obstructions as much as possible when using it.
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