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C4001 24GHz mmWave Human Presence Detection Sensor(25 Meters)

SKU: SEN0609

The article provides an in-depth look at the Gravity: C4001 24GHz mmWave Human Presence Detection Sensor, detailing its technical specifications such as a maximum detection range of 25 meters, a beam angle of 100*40°, and operating frequency of 24GHz. It operates at temperatures from -40 to 85℃, with a baud rate of 9600, and is compact in size at 26*30mm. The sensor is designed for advanced human presence detection applications using FMCW modulation, offering reliable performance in various environmental conditions. Pinout details are included for VIN, GND, RX, TX, and OUT connections, ensuring comprehensive understanding for integration into projects requiring precise motion detection capabilities.

Board Overview of C4001 Millimeter-wave Human Body Presence Motion Distance Detection Radar Sensor

Downloadable Resources

  • Docs
  • Tech Specs

    • 1. Example Code for Arduino-Motion Detection

    This article offers a comprehensive guide to setting up motion detection using the Arduino Uno and C4001 Millimeter Wave Presence Sensor. It covers hardware setup, software installation, wiring diagrams, and provides sample Arduino code to detect object movements effectively. The result is a system that outputs 'exist motion' when an object is detected, making it a practical resource for DIY enthusiasts and developers interested in sensor technology and Arduino projects.

    2. Example Code for Arduino-Distance and Speed Acquisition

    This article provides a comprehensive guide on using Arduino and the C4001 mmWave sensor to measure distance and speed. It includes hardware and software preparation steps, wiring instructions, and a detailed example code for radar measurement. Readers will learn how to configure the sensor's detection thresholds, set sensor mode, and interpret output data, enabling precise distance and speed acquisition for various applications.

    Reference

    Specification

    Parameter Value
    Operating voltage 3.3/5V
    Maximum detection range 25m
    Beam angle 100*40°
    Modulation mode FMCW
    Operating frequency 24GHz
    Operating temperature -40~85℃
    Baud rate 9600
    Size 26*30mm

    Pinout

    Definition Explanation
    VIN Power supply
    GND Ground
    RX Sensor serial port receive
    TX Sensor serial port transmit
    OUT Voltage output

    FAQ

    • Does millimeter wave technology have any impact on the health of users?

      Current research and main conclusions show that millimeter wave signals are not harmful to human health. Millimeter wave signals are higher in frequency and lower in energy, so they are less likely to cause harm to the human body. In addition, the radiation power of 5G millimeter wave technology is very low, far below the limit value of international standards, and will not generate heat radiation.

    • What is millimeter wave?

      As the name suggests, millimeter waves are electromagnetic waves with a wavelength (λ) of about 1 millimeter (more precisely, 1 to 10 millimeters). By using the formula f = c/λ, where c is the speed of light (3E8 m/s), the wavelength can be converted into a frequency range of 30-300 GHz. The millimeter wave frequency band has been designated as the "extremely high frequency" (EHF) band by the International Telecommunication Union (ITU). The term "millimeter wave" is also commonly abbreviated as "mmWave".

    • Can we use this item as is.
      Connect 5v, ground and
      When there motion detect the 'out' go hight 5v
      If so I need this asap

      Yes, I did it this way with their previous mode using ESPHome. Created a binary sensor for the out GPIO and have a trigger/lambda funtion to go high when motion was detected and low when none detected for occupancy occupancy sensor

      edit: if by "When there motion detect the 'out' go hight 5v" you mean power on the sensor when motion is detected no, the sensor sensors to be powered on to detect movement and has to be hooked to some sort of control control board like ESP32 Maybe I am misunderstanding the question.

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