Although not strictly OT here, there's almost certainly better places, so can anyone recommend any friendly mailing lists for getting started with using Linux to talk to GPIO etc? The sort of thing you might use a Pi or BeagleBone for (but not specific to a single platform).
I've got several Pi's, a BB Black (and an Arduino for good measure) sitting around not really being used for much, and I really should learn to do some interesting things with them.
There are loads of forums and Google Groups but I just prefer mailing lists like this one.
Specific examples of the sort of thing I want to do:
For personal use I want to do something interesting with Christmas lights, probably running from a solar charged 12V battery - that feels like it should give me plenty of scope to "play".
Also, a colleague has asked about a simple application to record encoder and analogue input values to CSV on a periodic basis.
In each case I can't even decide whether I should be looking at Arduino or Pi/BBB hence looking for a more general mailing list than one targeted at a specific solution.