I'm looking for something like a Raspberry Pi with a GPS HAT to run ntp. The Raspberry Pi has its Ethernet connected via USB which adds a significant layer of jitter. So I'm looking for something similar but with a good Ethernet connection.
[Yes, most people wouldn't notice the Ethernet jitter from USB. I'm retired so I have time for things like this.] The recent (ongoing?) discussion of a board with 2 LAN connections suggested Banana Pi and Orange Pi. The good news is that they have the same 40 pin I/O connector as the Raspberry Pi so Pi HATs will probably work without a lot of effort. I poked around via Google but didn't find anything that looked wonderful. For example, the Orange Pi claims to be open source but the schematics are hard to find. It may be as simple as I'm not looking in the right place. Does anybody have a favorite small board with both a good Ethernet connection and a way to connect GPS with PPS? -- These are my opinions. I hate spam.
