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

MechMatt

@paviro any suggestions on what relay to get for use with this? There are lots of choices on amazon

Patrick

Ok. When I’ve time, I will get a wireless transmitter.
Would be embarrasing if it wouldnt work because I’ve never tried :anguished:

IngmarSwart

@paviro I finally found some time to look into the problem I had some more. The exact origin is still unclear to me, but I did figure out that my problem, it is not related to your module, or the MM software in general. I got the same behaviour over ssh: tvservice -o switches the monitor connected to the Pi off, tvservice -p switches it back on, but the screen would appear black. After fiddling around a little bit, I found another solution that does not require root rights. Instead of using the sudo chvt 7 && sudo chvt 9 command, the problem can also be solved using fbset. My modified version of the activateMonitor function file node_helper.js:

activateMonitor: function () {
    if (this.config.relayPIN != false) {
      gpio.digitalWrite(this.config.relayPIN, this.config.relayOnState)
    }
    else if (this.config.relayPIN == false){
      exec("/opt/vc/bin/tvservice -p", null);
      exec("/bin/fbset -depth 8 && /bin/fbset -depth 16 ", null);
      exec("/usr/bin/xrefresh",null);
    }

For the command xrefresh to work when given via ssh, the correct display variable has to be set (in my case):
export DISPLAY=:0 I have added this line to my .profile file in the /home/pi directory so that I don’t have to type it every time I log in via ssh.

IngmarSwart

@MechMatt Have a look at the PowerSwitch Tail. If you live in the US, you can buy an assembled version from Adafruit. If you’re in 240V land (like me), you will have to do some (basic) soldering. Works like a charm for me. :-)

KirAsh4

That’s really odd that you have to go through all of that. On my rPi-3 with the most recent Raspbian Jessie release, I can use 'tvservice -o' and 'tvservice -p' and it just works. I don’t have to do anything else. It’s all running as the unprivileged user 'pi' (and without issuing 'sudo' before each command.) I wonder if it has something to do with the monitor and what it responds with when a signal is sent … Glad you figured it out though.

IngmarSwart

@KirAsh4 I agree, it’s very strange. Like you, I am using a rPi-3 with the most recent version of Raspbian Jessie and run everything as user pi. So maybe it is the monitor (Philips 273V5l). Which one do you use?

Although the problem is fixed, I would like to know what is going on.

KirAsh4

Let me get home and get you the details on it. It a monitor we had sitting around at the office, some high end graphic Pro monitor that wasn’t being used anymore. I also have a test I want to perform on it, see if that makes a difference in what I’m seeing. Stay tuned.

joerod

@paviro I donwloaded to node 5.0.0 and I know get the following error

Failed at the magicmirror@2.0.0 start script 'electron js/electron.js'.

paviro

@joerod That’s all? Not a failure of my plugin. Any more logs?

Try2Fly

For people who are not confortable with programming this, or need to buy a pir sensor anyway

You can also buy a pir with motionsensor like this

joerod

@paviro

    9 verbose stack Error: magicmirror@2.0.0 start: `electron js/electron.js`
    9 verbose stack Exit status 1
    9 verbose stack     at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:214$
    9 verbose stack     at emitTwo (events.js:87:13)
    9 verbose stack     at EventEmitter.emit (events.js:172:7)
    9 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:24:14)
    9 verbose stack     at emitTwo (events.js:87:13)
    9 verbose stack     at ChildProcess.emit (events.js:172:7)
    9 verbose stack     at maybeClose (internal/child_process.js:817:16)
    9 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)

I’ve tested my PIR sensor with a Python script to make sure I’m using the proper GPIO and its functioning as it should. I do see 1 & 0 when I move near the sensor so I don’t think its the hardware.

I’d love to use this module, I was going to do it in python but since you have it in JS I figured why not use that.

paviro

@joerod please use Markdown on code snippets so it is easier to read! :) have you installed all the dependencies (also for the mirror itself?)
@MichMich any idea?

MichMich

Sorry, no clue. :(

joerod

@paviro I had to downgrade to node 5.0.0, I confirmed its that version of node. After the downgrade I removed the PIR module and did a git clone and then npm install in the folder. Still the same thing, is there a specific version of node 5 I should be using or a specific version of npm?

I’m running it from
/home/pi/MagicMirror/modules/MMM-PIR-Sensor

MichMich

Could you try it with node serveronly ?

paviro

@joerod also do npm install on the mm folder or install the whole thing from scratch :)

DirkS

@paviro as a feedback: i used the latest MMM branch and yours and it is working fine with my PIR sensor on a rpi2. I didn’t had to downgrade anything to node 5 (and i also don’t know what it is :D ) Thanks for your work. It is so great that the mirror is starting if a presence is detected!!

paviro

@DirkS glad to hear! :)

MechMatt

Hey Everyone!
I am trying to use this module to turn off/on a tv and im having a bit of trouble on the physical end of things… I got the module working perfectly (tested it with PIR and hdmi on/off). Now I am trying to use a relay with the PIR sensor to have the TV screen itself turn on and off. I was planning on wiring this to the TV power button (so it is essentially the same as pressing the on/off button).

I got the relay working… and I was about to take apart my tv when i thought…will even work for the on/off button? When it senses movement it will send the signal and then … turn off the tv I guess. As soon as the movement is undetected it stops sending the signal (or really pulse in this case)… just stopping wouldn’t turn the tv back on either. I guess it needs to send a pulse when it stops detecting movement, and then another one when it does again. Am I thinking about this wrong? Should I wire it to something else? Thanks in advance

MechMatt

@MechMatt On second thought, im having trouble with the relay as well… could you post a wiring diagram for the pi, relay, and tv? I’m not the best at electronics