The 24GHz mmWave Sensor for XIAO is a radar expansion module for indoor presence-sensing projects. Use it for a room-occupancy experiment or lighting-control prototype, including detecting small movements while someone is sitting still.
Feature Highlights
Advanced FMCW Technology : Uses Frequency-Modulated Continuous Wave radar for indoor human-presence sensing. Test and tune detection in the intended room; moving objects and strong reflections can affect the result.
Comprehensive Human Body Detection : Detects moving people and the small movements associated with stationary occupants, including people sitting or lying down.
Flexible Adjustment and Configuration : Offers multi-level intelligent parameter adjustment via Bluetooth or a serial port, catering to diverse environmental needs and scene changes. It also supports app-based direct parameter configuration, simplifying the setup process by bypassing the need for a serial port connection.
Wide Detection Range : Adjustable detection distance of 0.756 m, with a stated detection angle of 60. Actual coverage depends on mounting, surroundings and the target; check it in place rather than assuming every corner is covered.
Enhanced Aesthetics and Functionality : Can sit behind a suitable radar-transparent enclosure. Metal or shielding materials in front of the antenna interfere with detection; check the enclosure guidance before designing the case.
Specifications
Key specifications include an operating frequency of 24GHz~24.25GHz and a power supply capacity requirement of over 200mA. The sensor’s average operating current stands at 79 mA, with a modulation type of FMCW. It’s specifically tailored for human presence sensing applications, offering a detection distance ranging from 0.75m to 6m (adjustable), and a detection angle of 60. The distance resolution is fine-tuned to 0.75m, with a sweep bandwidth of 250MHz, a stated ambient temperature range of -40C to 85C. Its compact dimensions, measuring 18mm x 22mm, make it suitable for a wide range of applications.
Applications
Human Body Sensor Light Control
Smart Home Appliances
Indoor occupancy-sensing prototypes
In the Box
24GHz mmWave Sensor for XIAO – Human Static Presence Module
If your build depends on particular headers or mounting accessories, please contact us before ordering to confirm what is supplied.
Before you build
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