{HowTo} turn on/off your monitor (Time based, PIR/Button, App)

Fozi

@FREIGHTTRAIN Can you elaborate more precisely, what is not working? What have you done? What is the expected behaviour? How does it behave? How to reproduce? That might help in helping you.

drk-geek

hi @cruunnerr
I just installed it, everything looks good but not working at all. I tried via 2.1 Using PIR-Module and 2.2 Using PIR-Script both not working, any suggestion how to check where the issue is?

deebee999

@cruunnerr
I have had success with your help and my PIR sensor but only after running pir.py from .bashrc

The script is working however I read the following warning when accessing my Magic Mirror with SSH:

RuntimeWarning. This channel is already in use, continuing anyway. io.setup(LED_PIN, io.OUT)

My end result is not affected. The PIR works fine.

Thank you

maptecnet

Just a little feedback that was a huge help for me.
@cruunnerr don’t know if you want to add this information on your first message.

I have a samsung d6000 series tv that wouldn’t work anyway with modules for PIR sensor. A BIG aplause for all developers but i coudn’t get the tv out of “No Signal” message. The MagicMirror would turn image off but tv only in “No Signal”.

I’m not a programmer and just went on test and try.

I figured out that the https://github.com/bugsounet/MMM-NewPIR from @Bugsounet (BIG thanks to you also!) managed the problem!!

With this module set to mode: 4 - use HDMI CEC the TV shuts down when the MagicMirror tells her to shut down!
It’s straight through ON and OFF as expected!

I’me very thankful to you all managing to help us out!
Thanks!

ulster

@cruunnerr

its possible to kill 2.2 Using PIR-Script in rasp pi?
Can you tell me how I cans do it please?
thanks

sdetweil

@ulster kill 2.2 what?

ulster

@sdetweil

This one. Mentioned in the first page.
how to remove it?

#!/usr/bin/env python

import sys
import time
import RPi.GPIO as io
import subprocess

io.setmode(io.BCM)
SHUTOFF_DELAY = 120 # in seconds, how long the monitor will be on until next button press or PIR detection
PIR_PIN = 22 # 15 on the board (this needn’t to be a PIR. Can be a button also)
LED_PIN = 16 # optional, don’t use as Relay-PIN. It just shows detection time of the PIR without delay time

def main():
io.setup(PIR_PIN, io.IN)
io.setup(LED_PIN, io.OUT)
turned_off = False
last_motion_time = time.time()

while True:
    if io.input(PIR_PIN):
        last_motion_time = time.time()
        io.output(LED_PIN, io.LOW)
        print ".",
        sys.stdout.flush()
        if turned_off:
            turned_off = False
            turn_on()
    else:
        if not turned_off and time.time() > (last_motion_time + 
                                             SHUTOFF_DELAY):
            turned_off = True
            turn_off()
        if not turned_off and time.time() > (last_motion_time + 1):
            io.output(LED_PIN, io.HIGH)
    time.sleep(.1)

def turn_on():
subprocess.call(“sh /home/pi/monitor_on.sh”, shell=True)

def turn_off():
subprocess.call(“sh /home/pi/monitor_off.sh”, shell=True)

if name == ‘main’:
try:
main()
except KeyboardInterrupt:
io.cleanup()

sdetweil

@ulster sorry, i dont know anything about the module and dont read ( or re-read) every page of posts

andi.aw.weiss

Hello everyone, I’m getting desperate. I’ve now read the entire tutorial but I can’t find my mistake.

I am using my MM with a PIR sensor and would like to switch the backlight of the display with a relay. so i use this script pir.py:

#!/usr/bin/env python

import sys
import time
import RPi.GPIO as io
import subprocess

io.setmode(io.BCM)
SHUTOFF_DELAY = 120 # in seconds, how long the monitor will be on until next button press or PIR detection
PIR_PIN = 22       # 15 on the board (this needn't to be a PIR. Can be a button also)
LED_PIN = 16      # optional

def main():
    io.setup(PIR_PIN, io.IN)
    io.setup(LED_PIN, io.OUT)
    turned_off = False
    last_motion_time = time.time()

    while True:
        if io.input(PIR_PIN):
            last_motion_time = time.time()
            io.output(LED_PIN, io.LOW)
            print ".",
            sys.stdout.flush()
            if turned_off:
                turned_off = False
                turn_on()
        else:
            if not turned_off and time.time() > (last_motion_time + 
                                                 SHUTOFF_DELAY):
                turned_off = True
                turn_off()
            if not turned_off and time.time() > (last_motion_time + 1):
                io.output(LED_PIN, io.HIGH)
        time.sleep(.1)

def turn_on():
	subprocess.call("sh /home/pi/monitor_on.sh", shell=True)

def turn_off():
	subprocess.call("sh /home/pi/monitor_off.sh", shell=True)

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        io.cleanup()

Unfortunately, when I run this script in the terminal, I only get the feedback from the PIR sensor (…) but the relay is not switched. But if I run the monitor_on.sh or monitor_off.sh script it works:

monitor_on.sh

gpio -g mode 27 out
sleep 0.2
gpio -g write 27 1

monitor_off.sh

gpio -g mode 27 out
sleep 0.2
gpio -g write 27 0

But the PIR.py doesn’t work. Where could the mistake lie?

Many greetings Andreas

MadScientist

@andi-aw-weiss I think you are using the wrong script. With just a quick look it seems you’re running the script from point 2.2 (Using PIR script) of the first post. What you want is point 5.2 (Use relay with a PIR). That script used in 5.2 is different than that of 2.2, which does not have code to control the relay.

Have a look at it again.

andi.aw.weiss

@MadScientist Hey, unfortunately the problem hasn’t changed. I have now like you said the script from 5.2. The problem remains. PIR detects motion. Relay does not switch. :loudly_crying_face: I don’t know

andi.aw.weiss

@MadScientist ok it seems to be working now. However, the relay switches the first time after the 120 s have expired and a movement is detected. not previously. The change quote: “io.output(RELAY_PIN, False)” and for monitor off “io.output(RELAY_PIN, True)” only causes the relay to work in reverse. I now use this script:

#!/usr/bin/env python

import sys
import time
import RPi.GPIO as io
import subprocess

io.setmode(io.BCM)
SHUTOFF_DELAY = 120 # in seconds, how long the monitor will be on until next button press or PIR detection
PIR_PIN = 22       # 15 on the board (this needn't to be a PIR. Can be a button also)
LED_PIN = 17    # 11 on the board (optional): It just shows detection time of PIR without delay time
RELAY_PIN = 27  # 13 on the board

def main():
    io.setup(PIR_PIN, io.IN)
    io.setup(LED_PIN, io.OUT)
    io.setup(RELAY_PIN, io.OUT)
    turned_off = False
    last_motion_time = time.time()

    while True:
        if io.input(PIR_PIN):
            last_motion_time = time.time()
            io.output(LED_PIN, io.LOW)
            print ("."),
            sys.stdout.flush()
            if turned_off:
                turned_off = False
                turn_on()
        else:
            if not turned_off and time.time() > (last_motion_time + 
                                                 SHUTOFF_DELAY):
                turned_off = True
                turn_off()
            if not turned_off and time.time() > (last_motion_time + 1):
                io.output(LED_PIN, io.HIGH)
        time.sleep(.1)

def turn_on():
        io.output(RELAY_PIN, True)

def turn_off():
        io.output(RELAY_PIN, False)

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        io.cleanup()

where could the error lie? or is that how it should be? Thank you MadScientist

cruunnerr

@andi-aw-weiss

Hey hey,

So what exactly doesn’t work? My English isn’t the best

In my case I am turning on a LED Stripe with the pir.

When I cold start the raspi, the LED stripe turns on for a few seconds (could be the turnoff delay time).
After a while it turns off.
From this moment on it should work as you expect. When movement is detected, the led (or relay) turns on for the delay time and extend the delay time for every new movement within the original delay time.

MadScientist

@andi-aw-weiss said in {HowTo} turn on/off your monitor (Time based, PIR/Button, App):

The change quote: “io.output(RELAY_PIN, False)” and for monitor off “io.output(RELAY_PIN, True)” only causes the relay to work in reverse. I now use this script:

Are you saying the screen turns off when the PIR detects a motion? In that case you have to change the the terminals on the relay. You have three terminals to connect the wires to. GND, normal open and normal close.

Another note: I have a bunch of relays here that are supposed to be compatibles with Raspberry Pi’s but somehow they don’t properly work. They switch exactly once and then are stuck. Not sure if you’re having the same issues.

andi.aw.weiss

@cruunnerr @MadScientist Thanks to both of you . For development/tutorial and support. My MM works. I was probably impatient the whole time I was testing. The relay only switches for the first time after the 120 s have expired. But that’s ok that it only occurs when you restart. I consider the problem solved. THANK YOU

nowayto

Hello, I know this is an old topic but I think it’s very interesting.

I have an idea but I’m a newbie to programming.
In my mind I was thinking about using one or more modules like these:

MMM-ModuleScheduler
MMM-Home-Presence
MMM-RemoteControl

to have a way to turning off the monitor when one member of the family is at home.

For “is at home” I mean when the phone is connected to wifi and the MMM-Home-Presence detect his presence.

Might be MMM-RemoteControl could communicate with MMM-Home-Presence and turn off/on the monitor?

What do you think about it?
Thanks

sdetweil

@nowayto you CAN compose a solution like that.

However Home-Presence does not inform other modules about state of devices

It could’ve extended to do that

Then you could config Remote-Controlto respond to that

nowayto

@sdetweil ok, I don’t think a newbie like me could do it but it was a good idea, if only Home-Presence had a notification option by default. Thanks

sdetweil

@nowayto try my updated fork

https://github.com/sdetweil/MMM-home-presence

a new config parm

  notification:"some_string",  // some_string  can be anything you want. 
  default "", //no notification will be sent.. just like normal

this is the notification key that will be sent
the payload will be
true, if at least one of the phones on the list is present
false, if none of the phones in the list are present

nowayto

@sdetweil Oh, thank you!
So you modify the module to send notification when it detect one or more presence?
I installed it and configure the notification “string”
Now I have a module that send a virtual notification “string” to other modules.
So now I’m toughing about install MMM-RemoteControl and MMM-ModuleScheduler.

When someone is at home ModuleScheduler will receive the “string” and it will send a command to RemoteControl for turning on the display.
And when no one is at home? ModuleSchedule won’t receive any notification so RemoteControl should exec the MONITOROFF commands.
I know it can’t work like this, maybe I’ve lost some steps in my mind.

I was also thinking about the electronics I’m using.
Mine is an LCD taken from a digital frame, connected to rasbperry through a lcd controller.
The controller turning off monitor itself when there isn’t hdmi signal for a while and it should stay in stand-by waiting for signal.
My doubts are:

In your opinion, module will send command every 10 seconds, so is this could be a problem?
Do you have experience if the “MONITORON” “MONITOROFF” commands acts as CEC commands or a simple “turning ON/OFF the raspberry’s video out”?
Because if it work as CEC command… I think it will not work, in my case with an LCD controller