[ntp:questions] Trying to use Dimension 4 time keeper

John Hasler jhasler at newsguy.com
Wed Sep 25 00:53:08 UTC 2013

I wrote:
> The Pi GPIO pins have pullups.  Just use an open-collector driver.

unruh writes:
> That of course assumes that you, not the designer of the gps card say,
> have designed the output.

I'm suggesting adding an open-collector driver rather than adding a
network of resistors and diodes.  Fewer parts and better results.
John Hasler 
jhasler at newsguy.com
Dancing Horse Hill
Elmwood, WI USA

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