Monthly Archives: July 2019

A Better Option than the PyPortal for a NTP Clock?

Posted on July 2, 2019 by robert

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

Posted on July 1, 2019 by robert

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 →

Posted in NTP, Projects | Leave a comment