Which is the :pin number?

[jeena]

I had quite some trouble in figuring out that the :pin number actually is the GPIO number, not the physical pin number (and not either the wiringPi number).

So if I want to write to the physical pin number 12 I need to write PiPiper::Pin.new(:pin => 18, :direction => :out).

Would it be possible to add this information somewhere obvious to the documentation?

[jwhitehorn]

This is an excellent idea!

[v0dro]

I'll take up this issue and come up with an API suggestion in a while. Please assign me to this.