Human Sensor 1U For Home Assistant By SCREEK(Small Size, LD2410C, ESP32-S2)

The indispensable sensor in Home Assistant is the human presence sensor. With the latest 24Ghz millimeter wave radar technology, human detection can now dynamically analyze human breathing, movement and other patterns to detect moving or stationary humans. The data will be real-time feedback, which is a very good use of an intelligent sensor.

HLK-LD2410C and HLK-LD2410B have exactly the same characteristics, but use different package volumes, support Bluetooth adjustment parameters (using HLKRadarTool), it is a very good radar module that can be adjusted flexibly.

We tested a lot of esp32 modules, and between different radar modules, we found a nice little balance, through a simple and ingenious combination, they combine very small and simple. I think there is an advantage to this simplicity, which is to let it focus on its own thinking, motion detection and human presence. Its small size allows you to easily mount it on the wall, you can point it in the direction you want it to detect, and make it work the way you expect it to, I think, is a very simple sensor , but it is important.

Its size is a very good size, it can easily fit in the palm of the hand, a very small sensor., its size is: 36.7mm x 30mm x 13.8mm. It's square, so we can stick it up, or hide it if we can think of some way. The power supply is Type-c, 5v 1000ma. Since radar and ESP32 are sensitive to power supply, please choose some USB power supply with stable power supply.

This radar is specially designed for the connection of HomeAssistant. You only need to have a HomeAssistant system. After configuring the sensor network, you can discover and configure devices in the same LAN, which is quite convenient.
If you encounter some troubles, the usb interface of the sensor is very convenient for more advanced maintenance work. Through the Esphome Web Tool, you can easily view logs, configure WIFI. If you are a lover full of DIY spirit, then this radar is also very suitable for you.

For its sensor characteristics, it uses 24Ghz Frequency Modulated Continuous, which makes it have some basic intelligence. It can echo the distance and energy of the detected object, including simply distinguishing whether it is an active object or a stationary one object.which can detect moving human body as well as stationary human body. Based on HiLink's LD2410C radar module, the module itself has Bluetooth function, and you can use HiLink's HLKRadarTool to adjust parameters very conveniently. Detectors are much smarter.

By combining the ESP32-S2 and the smart LD2410C to work together, and using the excellent and flexible ESPHome firmware, we can now make HomeAssistant easily sense the human body, and track distance and energy value changes easily through Bluetooth and the configuration APP (HLKRadarTool) combined with radar , allowing you to adjust the range of activities you want to perceive very flexibly and conveniently.

The sensor uses Type-C power supply, which is very convenient.

Using a well-designed 3D printed shell (designed by CSZ), it can be easily pasted on the wall, and the side with the Logo is facing the direction you want to sense. From then on, your HA can flexibly sense people coming and going up.