Microsecond Accurate NTP using PPS signals from a $12 GPS

In this video I demonstrate how to set up this $12 GPS as a microsecond accurate network time protocol (NTP) source driving Chrony via a Raspberry Pi fed by a GPS pulse per second (PPS) signal. This will allow your home and all connected devices to utilize a very accurate time source for precise time synchronization.

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Blog post to follow along (for a similar module but not exact) - https://austinsnerdythings.com/2021/0...

GT-U7 GPS module - https://amzn.to/3F20zC5
Adafruit GPS module 66 channel - https://amzn.to/3qvUjx8
GPS antenna for better reception & timing - https://amzn.to/3FtSdCh
Raspberry Pi 4 Starter Kit - https://amzn.to/3Kdh3df
Wires to hook GPS to Pi - https://amzn.to/33ysV8R