PIR sensor problem

sultan.y

I am trying to add a PIR sensor to the MM

i have wired it to a raspberry pi but having a problem executing the funciton control the lcd

getting an error, an idea

sudo chmod u+s /opt/vc/bin/tvservice && sudo chmod u+s /bin/chvt
chmod: cannot access ‘/opt/vc/bin/tvservice’: No such file or directory

sdetweil

@sultan-y in raspios latest , bullseye, that function, tvservice, is no longer provided.,

sultan.y

is there a workaround?

sdetweil

@sultan-y there are other approaches to turn off monitor

some of the newer pie modules support multiple ways

bugsounet

@sdetweil said in PIR sensor problem:

some of the newer pir modules support multiple ways

I love this style ;)

gandalf20000

@sultan-y
To get the PIR sensor working with MM on the currently latest Raspberry PI OS Bullseye you can use /usr/bin/vcgencmd display_power 0/1 instead of using the tvservice command (I run it in a script started by crontab at reboot).

I also

added /usr/bin/xrandr -display :0.0 --auto before the vcgencmd command
added user Pi to the gpio group: sudo usermod -a -G gpio pi, and I
added XAUTHORITY=/home/pi/.Xauthority here: sudo vi /etc/environment

My mirror uses a DVI to HMI output, but using xrandr and XAUTHORITY as above solved the issues I had.

Btw, I use

/usr/bin/chvt 6
/usr/bin/chvt 7

after the /usr/bin/vcgencmd display_power 1 command, but that was used prior to using Bullseye as well.