PIR-Sensor - put your mirror to sleep if not used

Morningstar

@AAPS
(Raspi 3)
Just connect the PIR sensor Pins with three of these connector cables (female on both sides) directly to the GPIO pins on the PI, without soldering.
alt text

You need to know the pin assignments of your PIR sensor. I used:
(4) +5V
(6) GND (ground)
(32) GPIO12
i think you can also use (15) instead of my (32) then you don’t need to change the pin in the config file.
alt text

Hope that helps.

AAPS

@Morningstar Thanks! Where could I buy everything? Amazon?

yawns

@AAPS
Yes, Amazon, ebay, electronic stores in your city. And there are dozens of online shops for raspberry, arduino and all kinds of add-ons.

AAPS

Is this the right cable to use? https://www.amazon.com/Icstation-Female-Jumper-Cable-Connector/dp/B01F59QFMM/ref=sr_1_2? ie=UTF8&qid=1486697807&sr=8-2&keywords=female+to+female+Rainbow+%2F+DuPont+Wire

Morningstar

@AAPS
Yes that’s the right one.

Goldjunge_Chriz

Is it possible to switch the monitor on and off with the PIR? I would like to hide the sensor and turn on the monitor with a hand movement and then switch it off again with a new hand movement. The sensor should be hidden so that it registers only this hand movement and no other movements in the room. If the manual movement for switching off is once forgotten, the monitor should turn itself off after 30 minutes, for example.

Is this possible?

strawberry 3.141

@Goldjunge_Chriz you might want to use the gesture module of mochman for it

Goldjunge_Chriz

Does it work well? I thought that with the PIR could be easier since I do not need any special gesture, only some individual movement.

illskool

Hello,
1st off I’m a total noob at coding so please forgive me. I have been able to set up my mirror and get several modules up and running. However, I am having quite a bit of difficulty with the PIR-Sensor. I have it wired directly to the GPIO(pins 2, 6, 15). I installed the MMM-PIR-Sensor via paviros instruction. At first I got the white screen. Somehow that issue is gone. Now I can’t get the module to work. I know the PIR sensor is working, because I am able to run a python script to detect motion. The script just keeps in running though even when I walk away from the sensor. Maybe the sensor is faulty?

Any help would be greatly appreciated.

Thanks in advance

Mar

@DirkS

Hey Dirk, i was having some issues and was using “/opt/vc/bin/tvservice -o” and “/opt/vc/bin/tvservice --preferred && sudo chvt 6 && sudo chat 2” to turn my screen on and off as that seems to be what everyone is using. This worked reliably since i started using the PIR sensor.

All of a sudden this started making my screen go white when it issued the monitor on command…and the screen would stay white for a few minutes and sometimes it would come back.

Using your “vcgencmd” commands in place of the previous in my monitor on/off scripts everything is back to working again.

I had a couple questions. Firstly i didnt understand what you mean by hdmi_blanking=1…what does this do/should i put this in my boot/config.txt?? And secondly what is the difference between the two ways of toggling the monitor?

(I did ask my question here: https://forum.magicmirror.builders/topic/1780/white-screen-after-screen-resumes-from-pir-or-sometimes-randomly-can-still-access-via-ssh-requires-restart-sometimes/4 incase but stumbled upon this after.)