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

sdetweil

@chandra move one to a different GPIO pin and change the config as required for that

chandra

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

@chandra move one to a different GPIO pin and change the config as required for that

thank you, but as i mentioned, i’m just a beginner. just copying and pasting.:face_with_stuck-out_tongue_winking_eye:
So lets fix led on GPIO22 and move PIR to another.

cruunnerr

I am glad, you got it :)

As you can see i used PIN 25 for the PIR and 17,22,24 for the LED’s.

Keep in mind, that the physical GPIO Number isn’t the same as with BCM numbering !!! Thats important!

In the script (line 9) u can see that it uses the BCM Numbering. That means the following:

BCM pin 17 = physical PIN 11
BCM pin 22 = physical PIN 15
BCM pin 24 = physical PIN 18
BCM pin 25 = physical PIN 22

So the LED’s must be connected with physical PIN 11,15,18 and the PIR on PIN 22.

Hope that was clear ^^
My english isn’t very well.

sdetweil

@cruunnerr yeh, don’t know why use the BCM ever… use the actual pin numbers… hurts my head trying to figure out the pin mappings…

https://raspberrypi.stackexchange.com/questions/12966/what-is-the-difference-between-board-and-bcm-for-gpio-pin-numbering

io.setmode(io.BOARD) instead of io.setmode(io.BCM)

chandra

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

I am glad, you got it :)

As you can see i used PIN 25 for the PIR and 17,22,24 for the LED’s.

Keep in mind, that the physical GPIO Number isn’t the same as with BCM numbering !!! Thats important!

In the script (line 9) u can see that it uses the BCM Numbering. That means the following:

BCM pin 17 = physical PIN 11
BCM pin 22 = physical PIN 15
BCM pin 24 = physical PIN 18
BCM pin 25 = physical PIN 22

So the LED’s must be connected with physical PIN 11,15,18 and the PIR on PIN 22.

Hope that was clear ^^
My english isn’t very well.

Yup, I connected like that. There is a problem. Disabled the PIR Module.
Screen goes off after 120sec, But when it sense the motion, the screen is black.
My magicmirror is not set to “auto start” , I use “cd ~/MagicMirror
DISPLAY=:0 npm start”.

“python pir.py” is working properly. I used the steps described in 2.2.

chandra

One thing found was: when edited the rc.local using “sudo nano /etc/rc.local” and writing “python /home/pi/pir.py &” above exit 0", the “&” is still there.
It was supposed to look like:

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

python /home/pi/pir.py

exit 0

But, i am getting

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

python /home/pi/pir.py &

exit 0

What is the mistake im doing? ( presently checking the screen on off only)

cruunnerr

There is no mistake as far as i can see.

The “&” just need to be written, when a second or third command follows.

So when u are just using this one command both (with or without the “&”) should work

cruunnerr

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

Screen goes off after 120sec, But when it sense the motion, the screen is black.

Hint from the main post:

To check if it works just go into terminal via ssh and type:

sudo tvservice -o to turn off
sudo tvservice -p to turn on

edit: for some monitors the following commands work better. Please use them if your monitor needs it:

vcgencmd display_power 0 to turn off
vcgencmd display_power 1 to turn on

edit:
also check this:
https://forum.magicmirror.builders/topic/6291/howto-turn-on-off-your-monitor-time-based-pir-button-app/11

teitlebot

The script works as intended but I would like to use the module.
The module doesnt turn off my monitor. I have the correct pin labeled.
What else can I check? Where is the python code for the module? is there a pir.py file somewhere?

chandra

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

There is no mistake as far as i can see.

The “&” just need to be written, when a second or third command follows.

So when u are just using this one command both (with or without the “&”) should work

thank you. Got a confidence.
As mentioned earlier , i don’t have a experience with computer programming.