Gpiozero: Re-title header on B+ onwards

[waveform80]

Just realized (whilst in the middle of the pins re-factor, mulling over exactly how to handle inter-device pin locking) that the header on the B+ onwards _isn't_ P1 ... it's J8. I'll get this fixed up while I'm at it to avoid any confusion of users looking at their Pi's and going "but where the hell is P1?!"

[lurch]

...but it's labelled as "GPIO".

[waveform80]

look at the bit just by pin 1

[waveform80]

had a look on a Zero, a 2B, and a 3B (haven't got a B+ but I've found some photos online) - I'm pretty sure that header is labelled J8 but you're right there's a "GPIO" label silk-screened on too.

[lurch]

Ah yes. They even kept the "J8" labelling on the PiZero, which is surprising.

[lurch]

BTW I had already noticed this (P1 discrepancy), but I didn't think it was worth fixing ;-)

[waveform80]

Somehow the fact you'd already noticed it doesn't surprise me ;)

[bennuttall]

What do P1 and J8 stand for?

[waveform80]

They're simply the label on the silk-screen for the GPIO header. I'm not sure why the "P" prefixes were originally used - P for Pin or something I'd guess. J is another common prefix, usually used for blocks you'd attach jumpers to on a motherboard (so you'll probably find things like J2, J3, and so forth silk-screened on your motherboard - usually around the area you'd connect things like power switch, reset switch, etc).

Anyway, figured it'd be nice to have our ASCII-art schematics more or less match the real thing so people can find their way around.

[lurch]

@bennuttall I think this has been done, as the pinout diagrams now include 'J8' ?

[bennuttall]

:+1: