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

thoeng

I have the strangest problem i have not been able to solve for days now.

I am using 2.2 external pir.py script and it works flawlessly to display blank screen.

However, if screen orientation set to vertical via /boot/config.txt with either display_rotate=1 or 3, the monitor wont blank out !! :dizzy_face:

Its just blink for 1 second and nothing happen.

What I have tried:

check monitor status via xset -q (dpms) - it says monitor off but the TV stays on
run xset dpms force off - again the TV only blink for 1 second nothing else happen
Changed GL driver from raspi-config and reboot
Tried with other TV (both are LG brand 42" and 65")

Both tvservice -p and vcgencmd display_power 0 will work with any screen orientation but unfortunately it will display “no signal” on the TV.

Can anybody please help me out? This is really frustrating :dizzy_face: :dizzy_face:

tinsebayacc

Hi, i have followed the steps in 2.2, it works fine. The issue i have is i don’t want the screen turning off because of my silly lg tv screen saver which i cant disable. So i followed the steps for this in section 6. I created two new screen.sh files, made them executable and changed the relevant bits in the pir.py script. Now nothing happens. i have tried and checked again and again but nothing happens. I am fairly new to all of this and have probably missed something i just dont know what. Please could someone help me with this. Thank you very much

Asphyth

Hi, ! thanks for this GREEATTTTT TUTORIAL !

Working great with python,

About that, when my screen is turning down he shows “No signal” before turning black, any solution to hide this ?

pugsly

@Asphyth That is your monitor, its not coming from the Pi.

sdetweil

@Asphyth that is the energy star power down requirement. it warns you of no signal, and then is required to turn the display off electrically to save power

pascal006

hi!!
for this point the … always running i dont have LED to make a test . So my question is do i did a mistake someware ?

You can check if your button works by simply typing python pir.py. Every time u move through the PIR or press the button it will show you several …
End the test with “ctrl+c”

Peter Leemon

Hi all have followed step 2.1 got my tv to turn off and back on ok but doesn’t stay on for long at all (only a few seconds)?

FREIGHTTRAIN

This post is deleted!

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