> Well, if the connection were only 3 pins then an audio jack would work.
> In this case you can probably use two audio jacks, but there goes your
> board realestate.
>
> -Adam

I did consider two switched 3.5mm headphone jacks but, as you
say, it's not a very attractive solution. It looks like I'll have to go back
to Plan A and do some fabrimicating with odds and sods in the
Rubbish Workshop

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