[TRLog] Relay Control Output & Footwitch input LPT

[n6tr@teleport.com]

> 1). I understand that Relay Control and Paddle Input cannot share an LPT =
> because both need pin 14.  Is it also true that Footswitch Input and =
> Paddle Input cannot share an LPT because both need pullup resistors to =
> pin 14?

Correct - although, you may find you don't need the pullup resistors
or you can get the voltage for them from something else.

> 2). Coming from my footswitch, I understand to connect the hot to pin =
> 15...which pin do I connect the shield/ground to, is it 18, 25, or =
> another pin?  If it is 25, will the Footswitch Input then interfere with =
> LPT1's outgoing band data that uses pin 25?

Any ground will do.  Pin 25 is just a ground.

> 3). Likewise, for the Relay Control Output, I understand that the hot is =
> pin 15...which pin do I connect the shield/ground to, is it 18, 25, or =
> another pin?  If it is 25, will the Relay Control output then interfere =
> with LPT2's outgoing band data that uses 25?

Same.

Tree

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