PIR sensor behind glass?

[dmcinnes]

@wjdw87 cool! The connection is basicly the same as a PIR sensor. It has three wires, ground, vcc, and data which goes high when it senses motion. I plugged it into the PI’s 3.3v, ground and I believe gpio 22 (whichever is the default for the module).
Since the wire comes out as a three pin JST I split it into individual header connectors because all the pins are not next to one another on the PI.

Hope that helps!

[rvdgeer]

Can anyone of you please share a picture of how you’ve connected the microwave sensor to the Pi pins?
I know this sounds dumb, but I can’t seem to find out what pin connects to what, as I don’t know what pin is ground and what pins is (data) out…

Thanks!

[cowboysdude]

@amcolash said in PIR sensor behind glass?:

If you want a very simple solution (independent of MM completely), check out this script. This is what I am using, it is a very simple python script that reads the value of a PIR and then selectively turns on / off the monitor. You will need to change things up a bit as I wrote it for a C.H.I.P. but the GPIO library is the same.

VERY good choice! Mine also works independent… but I really like your idea!

[Nususu]

@cowboysdude I recently picked up these microwave sensor modules to use in conjunction with the code you posted for PIR Sensor. I’m pretty new to all this, and I can’t get any function out of the sensor. Do you have some advice on how to troubleshoot this? It could be an error on my part in implementing the code, wiring it incorrectly, or something else, but I’m just not sure how to figure out what the issue is.

[cowboysdude]

@Nususu I would go online and lookup ‘wiring pir sensor raspberry pi’ there are TONS of things out there. Your issue could be one of any or a combination of things… I did that using a PIR sensor so I have no idea how it would act with microwave sensors… good I’m hoping because I want to get some… BUT let me know if you need anymore help, not that I helped you now but I will do what I can!

[cowboysdude]

@rvdgeer and @Nususu

Try here!

https://www.pubnub.com/blog/2015-06-16-building-a-raspberry-pi-motion-sensor-with-realtime-alerts/

[Nususu]

@cowboysdude thanks, I’ll check that out and let you know how it goes!

[Nususu]

@cowboysdude I got it working using this code:

https://github.com/paviro/MMM-PIR-Sensor

With this code, I’ve got a problem where the screen only stays on for about 1 second after motion detection. Now I need to modify the code somehow to allow me to tell the mirror to stay on for a set amount of time after detecting motion, i.e. only go dark once no motion has been detected for x seconds. Problem is I don’t know where to start with that. Will let you know if I figure anything out. Any ideas?

[cowboysdude]

@Nususu try adding the powerSaving to your config…

{
        module: 'MMM-PIR-Sensor',
        config: {
            powerSaving: false
        }
    }

See what that does :) PLUS there’s also an adjustment on your PIR sensor itself… which one and I don’t know … do a google search for adjustments :)

[Aly]

@Nususu - same here

Perhaps, with a resistor?