Distributed Radar Module (ESP8266)

Distributed Wireless Radar Module

I found myself recently looking into the best (cheap) way to create a distributed presence/motion detection network. I've been using basic PIR Motion detectors for the past couple of years and while they do work fine in most situations there is still a lot to be desired... Ease of use and appearance to name a couple.

Why Radar?

PIR's work by bouncing around infrared signals, these signals cant pass through solid objects. That's why most TV remotes only work while pointed directly at the receiver. Due to this limitation of the technology, the PIR's themselves have to be relatively visible and placed somewhere prominent in a room.

On the other hand, radar motion detectors use microwaves which can easily pass through most solid surfaces and walls. Perfect for a 'hidden' whole house motion detection network. As well as this obvious improvement the radar module I use (RCWL-0516) is almost 4 times cheaper!

Parts Used

One of the most importa