Interesting. I just bought a set of 5, and I think I’m going to put a single one in my kitchen to cut down on false positives at night by my PIRs (in the winter the window gets to cold and the vent is right in front of it and triggers the light on). I’ll probably combine the PIRs and microwave sensor require both high within a timeframe for it to consider having detected motion.
I love this idea and glad I read to the bottom. My thoughts (from the top part) was couldn’t an 8266 be used?
This sounds similar to the BRUH mutlisensor and if it could be used to replace/upgrade it (since I already have 4 of those) I will definitely order some of these RF sensors.
Is this the same technology that Xandem is using? How many of these do we need for an average two level house?
good question - my thought would be yes - however…
I imagine from one of the pins you can get a variable output based on distance from the unit.
Couple a few of these together and overlap and they will give you a 2D grid reference X, Y and thus be able to track you in the space.
Whilst Xandem looks awesome, i’m not sure i need to know i’m on the couch vs in the livingroom (yet lol)
plus, i doubt Xandem and floorplan will play nice together so likely separate instances 
if you make 10 of these, it will cost about $100
the house is less of a calculation, it will depend on rooms. they seemed to be accurate to about 5-6m
you’ll need to test one to see if it will work in your house (brick, steel etc in walls)
Good luck and update us. I’ve built three and struggle with false sensing outside the house. The inside ones work pretty good but I must have some big noise outside these things don’t like. Bummer as I wanted to replace my old X10 motion floods with them but no luck so far.
Hi jaburges,
any further updates in youre project ? I read that the microwave motion sensor need 4 v are they working well with 3.3v from sonoff ?
Thanks,
yeah so far, they work great as binary sensors. I havent spent much more time on looking at combining the readings (i was at one point going to try and triangulate location based on a number of sensors - but have had other things on)
Hi Guys,
I try to get this working for over a week now . I followed your guide step by step with two different sonoff and also two different sensors, to ensure that it not a hardware problem.
The problem is that’s the sensor seems to react complety randomly.
Even if I dance in front of the sensor, it detects me for some seconds, then again not and then it dectects me again. For me it really looks completely random.
Did you add some resistor or anything’s else.
That you didn’t mentioned here ?
Thanks
no resistors, some people have but i had good results. do you have the sensor facing the correct way? I also noticed some interference when i put the sensor on the step down converter so I tested with a longer wire set up
hi could you help me a little, i cant get anything from the hassio setup you provide.
i done just like you and hassio is not reacting, nodered works fine
about switchmode you could look at this
This page has a good descriptions of the microwave sensor. Detection distance seems to be adjustable with use of resistor.
OP got my interest in this.
Disclaimer: not associate in any way with the link page.
Hi Guys,
thanks a lot for your help. My Setup looks like this :
I tryed to extend also the wires and changed the direction, but noo success
The Sonoff is confihured with SwitchTopic=1.
I will check out your links.
Greetings
No success so far . My log file still looks like this :
21:42:53 MQT: stat/BathRightOne/RESULT = {“Command”:“Unknown”}
21:42:55 MQT: cmnd/BathRightOne/POWER2 = ON
21:42:55 MQT: stat/BathRightOne/RESULT = {“Command”:“Unknown”}
21:43:00 CMD: cmnd/BathRightOne/POWER2 on
21:43:00 MQT: stat/BathRightOne/RESULT = {“Command”:“Unknown”}
21:43:16 MQT: cmnd/BathRightOne/POWER2 = ON
21:43:16 MQT: stat/BathRightOne/RESULT = {“Command”:“Unknown”}
21:43:16 MQT: cmnd/BathRightOne/POWER2 = ON
21:43:17 MQT: stat/BathRightOne/RESULT = {“Command”:“Unknown”}
Greetings
so does this detect you if your sitting down and not moving?
For the ones getting a lot of false positives: the RCWL-0516 requires a minimum of 4V, so it should be connected to 5V out on the Sonoff. For the Sonoff Basic R2 version, connect here:
How is project getting along?
yes, interested exactly in this question? Any comments?
I stumbled upon this GitHub thread https://github.com/jdesbonnet/RCWL-0516/issues/2 and it had all the answers I needed.
tl;dr - the input voltage is what matters.
Hi is there any more information on this topic?
How reliable is it, what range does it detect movement, does it detect very little movement?