HiFiBerryOS interactions

Dear HiFiBerry community -

I'm enjoying HiFiBerryOS but it needs one small thing to be perfect: a simple way to control the GPIO pins as an action in interactions.  As it is the system is offering serial messaging but this is more sophisticated than I need or can use.

For example, I want to turn on an amplifier controlled from a relay attached to the GPIO header.  

node.js is installed but I think the modules onoff and socket.io are not.  I don't wish to modify the installation at all, so that I will not have to worry about future updates resetting my changes.

Any ideas or workarounds? 






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