Quote:
Originally Posted by moz
You could even do it via the headphone jack - there's three contacts so two buttons on a wee lead would do nicely, and that would make the headphone jack useful to those who don't want an oversize mp3 player.
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This is an absolutely magnificent idea!
This should be very easy to implement. A headphone jack has 3 contacts: left channel, right channel and the common ground. It should be very cheap engineering-wise and production-wise to implement an enhancement of audio circuit that would generate a signal for processor when there is short connection between left and right channel.
The price for unit would not go up (at least not significantly) and you would open a market opportunity for a remote switch. Plus any self respecting hobbyist hardware hacker would be able to fashion his own perfect switch. Plus Mentor or EZreader or whatever name you decide to use would be the first to have such feature.