Relay control via ShellButtons

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Hi
I am a beginner at pimatic, and i have a question about the Shell Buttons.
I would like to controll my exhaust fan (80,120,230V) about Pimatic.

Here is my overview:

So i have to use Shell Buttons, Shell Sensors and i would like to use GaugeDevice to display the grade of the Voltage.

It doesn´t work, because of this, that i don´t know, wich command i should write in the line of onPress(ShellButtons)

How can i start, the relais, wich is at GPIO 5?

Thanks for your help.

@luke147 said in Relay control via ShellButtons:

I guess something like :

when button 80 is pressed then execute "gpio -g mode 5 out"
or
when button 80 is pressed then execute "gpio -g write 5 1"

For basic stuff like switchinga relay, getting the state of digital input and such you may also want to have a look at pimatic-gpio - https://pimatic.org/plugins/pimatic-gpio/

Regarding your the voltage gauge the question is how the different voltage levels can be detected. Is it a I2C device you use to control the fan?

The commands for the onPress does not work…
I have tested both of your commands.

Can it be, that pimatic does not find the commands, or it rights to execute missing?

@luke147 said in Relay control via ShellButtons:

Can it be, that pimatic does not find the commands, or it rights to execute missing?

It looks to me like you have entered the full statement (starting with the when keyword) as an action. However, you need to split the condition and the action part. You can use the rule editor as shown in the example below:

Thanks, but i have changed my project. Yet i only need 2 fan stages, and this I controll about the relais NC, or NO.

Do you know, how i should post a question about the Xiaomi Plant sensor for Pimatic?? Its not easy for a beginner like me.