Like some of us here in the community, I also have the desire to recognise movement so well that, for example, lights are switched on/off perfectly when entering the room.
With sensors based on the RCWL-0516 (wireless) or PIR (optical) I have never managed to achieve sufficiently good results. Although my cat was certainly happy when the light went on for him
I found this awesome device from Aqara (FP1 aka RTCZCGQ11LM) but they can not deliver them a.t.m. and the price seems to be about 100€! Looking at some pcb pictures, I can non see the right chip for radar detection…
Sadly it seems that 24GHz is not allowed in some areas in the world, like eu and usa. So this nice project was not a solution for me.
Then I was searching for 60ghz on my fav. search-engine and I found this landing-page:
Getting more into the details I found this pretty device:
- Cost at the moment (with tax in my country) about 40€
- Can detect movement
- Can detect presence
- Can detect micro movement
- Has an autonomous-mode
Here is a nice promo video: (title: Getting started with BGT60LTR11AIP Shield)
I have pre-ordered 2 modules and hope that they will be available soon. With this thread here, I wanted to draw attention to it and I would be very happy if a few others can be found here who would have the fun to implement.
On the other hand, I am neither an expert nor a newcomer in building diy iot devices. Probably I would take the ESP32 first to then also integrate as a HomeAssistant sensor.
I would be very happy about your opinions and tips.