Gravity: mmWave C4001 24GHz Human Presence Detection Sensor (12 Meters, I2C & UART)

The Gravity: C4001 millimeter-wave presence sensor is a remarkable innovation in the field of object detection and monitoring. Operating at a 24GHz frequency, this sensor extends a comprehensive horizontal detection range of 100 degrees, with a presence detection prowess stretching up to 8 meters and a motion and ranging capability extending to 12 meters. Perfectly suited for integration with various development boards like Arduino, Raspberry Pi, and ESP32/ESP8266, it supports both I2C and UART communication protocols through a convenient Gravity interface (PH2.0).

This sensor is particularly adept at human presence detection. Unlike infrared sensors that require movement to register a presence, the C4001 millimeter-wave sensor excels in detecting both static and moving individuals. Imagine a security system in your home that doesn’t falter if someone stays completely still. Whether someone is asleep, seated, or walking, this sensor provides reliable presence information, undeterred by environmental changes like fluctuating temperatures or light variations.

For those interested in distance and speed detection, the C4001 leverages Frequency Modulated Continuous Wave (FMCW) technology. This allows it to continuously emit modulated signals, enabling it to precisely measure distance and speed, capturing velocities ranging from 0.1 to 10 meters per second. It's akin to having a radar detector that not only notices objects but also gauzes their speed and distance accurately—perfect for applications involving dynamic object tracking or monitoring.

Millimeter-wave radar technology is the backbone of this sensor's operation, belonging to the high-frequency spectrum, and is distinguished for its ability to measure finely without direct contact. Whether you’re monitoring the hustle and bustle of a busy airport or ensuring safety in an industrial setting, this technology offers robust solutions.

However, the sensor's performance can significantly hinge on its installation. Various methods—top, bottom, horizontal, or downward tilted—pave the way for customization according to specific use cases, ensuring optimal functionality and efficiency. With a proper understanding of these setups, you can align the sensor's capabilities seamlessly with your project needs, similar to tuning an instrument for optimal sound clarity.