⚡️ DIYmall RCWL-0516 Motion Detection Sensor: Microwave Radar Switch Module for Arduino ESP8266, Raspberry PI - Human Rat Cat Detector - Detection Distance 5-7m Review

This thing is beyond amazing. I connected this to a 5V power supply and an LED connected to the output and ground for testing. I put it face down on the table at the end of the hall, walked about thirty feet down the hall, and ducked through the door. I looked out, held out my hand and waved, and it worked! It is absolutely amazing how sensitive this detector is.

They are amazingly delicate! But in the set I received they all work differently. After half an hour one of the five goes into a state in which he hardly recognizes me within walking distance, after a day's break he returns. (No heat at all. Is that related to charging?) Others are mostly good across the room. Too much difference in performance than expected. Consider them to experiment, they are great. If you want to complete the project, sort it out and choose the best one.

I put together a little media jukebox for goodies (like we'll have some of that this year, but who knows) and I'm using this instead PIR. It has a good range (around 21 feet as advertised) and is sensitive and fast. A bit difficult to test in development as it perceives all vibrations as movement at close range. The circuit itself is very clever, the radar on the trace! It accepts 5V and outputs a 3 by 3 signal as well as a 3 by 3 reference voltage (although I don't know how much current it can