Read the statement by Michael Teeuw here.
{HowTo} turn on/off your monitor (Time based, PIR/Button, App)
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sounds like a good plan :)
edit:
i also made changes to the scripts so now u were able to end them via “ctrl+c”.
Don’t know if i did everything correct but it works here. :)
I am just electronics technician and no programer ^^ -
I got really excited to see this post when it was shared a few weeks ago. Unfortunately, I have yet to get it to work. I am using a PIR sensor along with Paviro’s module. My issue is that I am using an LG TV which, when the signal is no longer received from the HDMI port, a “no signal” screensaver bounces around. So my goal is to get the screen to just go to black while the raspberry pi does not enter a power-save mode.
I have attempted to use the “screen_off/on” option original provided instead of the “monitor_on/off” but it doesn’t seem to be working properly.
I have tested that the PIR is connected but in my test it keeps teling me that motion is detected when there is no movement. I am doing this through a python script. I am fairly new at this so if anyone can please let me know what else I can provide you to help me get this thing working with the PIR sensor. Thanks.
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@hoofta Couldn’t you use a relay (like me) but instead of disconnecting the power you just trigger the power on/off button?
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@MadScientist I am not sure if I could or not. Could you elaborate on how you have yours setup?
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@hoofta My mirror isn’t done yet but in my case the relay will disconnect the power from the power supply to the LCD. I have no idea what TV you’re using but you could solder 2 wires to the power button of your TV and connect them to a relay, which will be triggered by a PIR motion sensor.
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@hoofta said in {HowTo} turn on/off your monitor (Time based, PIR/Button, App):
I have attempted to use the “screen_off/on” option original provided instead of the “monitor_on/off” but it doesn’t seem to be working properly.
As described u need to use the “pir.py” script from point 2.2.
But then (and i forgot to write that) u need to change the shell script names in the script or keep the “monitor_on” as name.
Sorry for my english, i hope u understand.So, to help u out:
u already creates the “screen_on.sh” and “screen_off.sh”, right?then u need to change the following lines in the “pir.py” script like this:
def turn_on(): subprocess.call("sh /home/pi/screen_on.sh", shell=True) def turn_off(): subprocess.call("sh /home/pi/screen_off.sh", shell=True)
The idea to connect the power button of the TV to a relay is a good start. So u could save much money.
But then the relay must do an impulse instead of being on or off static.
To do this u could use the normal pir.py script from point 2.2 (without any changes).
But the content of both *.sh files should look like this:nano monitor_on.sh:gpio -g write 27 1 sleep 1 gpio -g write 27 0nano monitor_off.sh:gpio -g write 27 1 sleep 1 gpio -g write 27 0chmod +x monitor_on.sh
chmod +x monitor_off.shConnect the relay with two wires parallel to the power button of your tv.
On the relay use “C” and “NO” -
@cruunnerr I did see originally where the monitor_on/off.sh needed to have the word “monitor” replaced with “screen” in the pir.py script. I am not sure I am confident enough to solder in a relay to the power switch on my TV. :-/
What script do you use to confirm your PIR is hooked up correctly and receiving the proper signal/input?
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@hoofta said in {HowTo} turn on/off your monitor (Time based, PIR/Button, App):
What script do you use to confirm your PIR is hooked up correctly and receiving the proper signal/input?
Just use the pir.py script from the tutorial ;)
every movement will show some dots in your terminal
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@cruunnerr Right, sorry about that. I forgot you included it. When I did that during initial setup, the dots scrolls across without stopping. Motion or not, dots keep generating.
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then u probably connected it wrong and the gpio which is used in the script is set to high (1). u can check this…
type
gpio readallto see the GPIO Breakout.pi@MagicMirror_Test:~ $ gpio readall +-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | | | 3.3v | | | 1 || 2 | | | 5v | | | | 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | | | 5v | | | | 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | | | 0v | | | | 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT0 | TxD | 15 | 14 | | | | 0v | | | 9 || 10 | 1 | ALT0 | RxD | 16 | 15 | | 17 | 0 | GPIO. 0 | OUT | 1 | 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 | | 27 | 2 | GPIO. 2 | OUT | 1 | 13 || 14 | | | 0v | | | | 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 | | | | 3.3v | | | 17 || 18 | 1 | IN | GPIO. 5 | 5 | 24 | | 10 | 12 | MOSI | IN | 0 | 19 || 20 | | | 0v | | | | 9 | 13 | MISO | IN | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 | | 11 | 14 | SCLK | IN | 0 | 23 || 24 | 1 | IN | CE0 | 10 | 8 | | | | 0v | | | 25 || 26 | 1 | IN | CE1 | 11 | 7 | | 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 | | 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | | | 0v | | | | 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 | | 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | | | 0v | | | | 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 | | 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 | | | | 0v | | | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+In the script the BCM pin 22 is used for the PIR. This is GPIO 3 and physically it is pin 15.
Please check if your pir is connected correctly.
Edit:
Oh, and take a look at your PIR. u can set the delay time from 0.3seconds up to 5 minutes. Maybe its set very high.
For using the soloutions of this tutorial the PIR adjust time should be set very low, as u can set the time within the script :)
https://www.mpja.com/download/31227sc.pdf
