Re: [chrony-users] Time synchronisation over a high-latency packet radio network

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> On 8/05/2019, at 10:32 AM, Stuart Longland <stuartl@xxxxxxxxxxxxxxxxxx> wrote:
> On 8/5/19 4:10 am, Chris Greenman wrote:
>> Is there any possibility of using GPS for time?  I had a similar dilemma
>> on my raspberry pi based boat computer.  I didn't want to rely on
>> internet provided time since it might not be available if away from the
>> slip.
> Well, two reasons we didn't go that route straight up:
> 1. cost (they cost nearly the price of the computer)
> 2. most are UART-based, and we don't have a UART free (UART0 is the
> console, and the PocketBeagle exposes UART2 and UART4).

How about using a USB GPS device.

Navisys have the GR-701W ( which provides a PPS signal over USB and give you +/- 10usecs precision. 

Cost and available power might be a factor for your application though.

Bryan Christianson

Bryan Christianson

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