SX Pin Input

ajajack

Hi,

I am working on a·SX project that requires me to read the output of a switch.· The switch has a two wire output and three positions-backward, off, and forward.· When in the backward position·the·first wire is·+ 2V and the other GND.· When in the off position both wires are grounded.· When in the forward position the·second wire is GND and the first is +2 V.· I would like to use a SX28 to read the two wires and determine the switches position.· Any suggestions would be greatly appreciated.

Thank You,
AJ

Velocit

Just connect them to any I/O pin on the SX and read the inputs as normal. Provided the +2V signal doesn't dip below the 1.4V TTL threshold, you shouldn't have a problem reading the switch positions.

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-Paul