Before you build a separate circuit -
Have you considered just using a DPDT toggle switch to swap the X-axis inputs between your controller card and scanners? Bill Benner refers to this in his projector wiring article:
http://www.laserist.org/laserist2008...onnections.htm
You might want to try that first - if it works, it would be REALLY easy to include that in your projector, without having to build additional circuits OR changing settings in your software!
Last edited by Stuka; 10-08-2008 at 09:16.
RR
Metrologic HeNe 3.3mw Modulated laser, 2 Radio Shack motors, and a broken mirror.
1979.
Sweet.....