Archive: (broken) From the post: >>Welcome to Austin’s Nerdy Things, where we spend years chasing nanoseconds that nobody asked us to chase. Five years ago, I started this blog by building a microsecond-accurate NTP server with a Raspberry Pi and PPS GPS. Then I went simpler – a $12 USB GPS for millisecond-accurate NTP because ease of use matters too. Then I spent months doing thermal management on the CPU to squeeze out another 81% improvement. My beloved Raspberry Pi 3B has been sitting at around +/- 200 nanoseconds for over a year now, and I figured that was about as good as it gets for consumer hardware. A $20 eBay purchase from two years ago just demolished all of that.