A new type of “Radar” motion sensor has been getting a lot of attention in the last couple of months, but no one seemed to know how they worked, so I decided to buy a few of these very cheap devices (sub $1) and investigate possible methods of operation. The boards I bought use the RCWL 9196, but appear to have identical functionality to those with the RWCL-0516 chip on them This github site … Continue reading Investigating a RCWL 9196 / RCWL-0516 “Radar” motion detector module