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

unruh unruh at invalid.ca
Tue Sep 24 19:20:30 UTC 2013

On 2013-09-24, John Hasler <jhasler at newsguy.com> wrote:
> unruh writes:
>> The Raspberry Pi specifically states that it is NOT 5V tolerant. 
> The Pi GPIO pins have pullups.  Just use an open-collector driver.

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

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