Category Archives: NTP

A Better Option than the PyPortal for a NTP Clock?

In the prior two posts I discussed the mistake made on the PyPortal that rendered all timing very inaccurate (was that 1000 Hz PWM tone actually 970 Hz or 1030 Hz or somewhere in between?).  Adafruit suggested adding a RTC, … Continue reading

Posted in Arduino, NTP, NTP Clock, Raspberry Pi | Leave a comment

PyPortal NTP Clock – Part 2

The PyPortal does have a 4-pin JST connector on the side, which makes it easy to hook up a IC2 Breakout like the DS3231, which is about 1 PPM accurate, or 3 seconds a month.  That is a heck of … Continue reading

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Musings on PC Clock Accuracy

As a digital mode and satellite operator, accurate time is essential.  The internet is a wonderful step forward in that Network Time Protocol (NTP) services give the potential for every PC to be accurate to within milliseconds.  Windows recognizes this … Continue reading

Posted in Computers, NTP, Time | 1 Comment