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Reply to "Wiring Atlas O signals"

stan2004 posted:

  More info is needed on how the DIN input works; it stands to reason this configuration was considered when the Atlas signal system was designed.

If no one comes forward with the "secret" to DIN operation,

Hi Stan,

I traced out all the various boards on my Custom Signal/Atlas signal installation (schematics available upon request, no guarantee they are perfectly correct ).  Basically DIN (and most other inputs) are pulled high by a 47K resistor to +5V.  This high runs through a series 470K resistor into the PIC 16xxx processor.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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