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Reply to "Proposed Solution to DCS Watchdog in Yard Tracks (DCS-RC WD Gerber Files Added to First Post)"

@stan2004 posted:

= 17 mA drive current.  Are you kidding me?!  Can an Arduino even source that much current on an output pin?

Gentlemen,  good morning.

Stan, although I've never measured the current, my understanding is the Arduino can source up to 20 mA on a pin safely (40 mA tops with the Mega 2560).  Up to the current limit of the power supply on the board when using multiple pins simultaneously which somewhere in the back of my little pea brain says 200 mA.  Submitted in the spirit of 'just fyi'.

Sorry to be in this camp, but I'm still of the opinion that we're searching for the answer to a question that shouldn't have been asked. 

GRJ, in my opinion there is nothing to be sorry about.  I would only disagree with 'shouldn't have been asked.'  This is all kinda' moot as I've decided to just use the PWB as is.  But, if in the future I need to address a completely different situation with a similar solution it is documented here and I've considered this as a learning opportunity.

As always, my thanks to everyone. Barry

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
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