Re: [chrony-users] Commercial unit running chrony, benefits of 'xleave'

[to] solder a PPS signal wire directly to the pin on the i210 IC.

IIRC, the 3 NIC ones have the test points and the 4 NIC ones don't, but don't count on my recollection.

i've soldered to the pin on at least a dozen apus' so far. it isn't hard with the right tools.

do i want Pascal to put the SDPx on a header? you bet.

--ch

On Thu, Feb 3, 2022 at 6:17 AM Kevin P. Fleming <kevin@xxxxxxx> wrote:

On Thu, Feb 3, 2022 at 9:04 AM Miroslav Lichvar <mlichvar@xxxxxxxxxx> wrote:
> If you would prefer something DIY running chrony, a good option would
> be the PC engines apus. They have onboard I211 NICs which support
> hardware timestamping and a serial port, to which could be connected a
> GPS receiver. There are pads on the board for the I211 SDPs which can
> be used for highly-accurate PPS timestamping, but soldering wires to
> those tiny pads might not be for everyone. See this great post from
> Dan Drown:

Unfortunately the situation has gotten worse: the current models (at
least the APU4) no longer have pads for the SDP pins, so I had to have
a good friend with the right equipment and experience solder a PPS
signal wire directly to the pin on the i210 IC. He did two, one
worked, one didn't, so that still needs to be resolved, definitely not
for the faint of heart :-)

With that said, with the wire in place, and a u-Blox 6-series GPS
receiver in one of the slots on the board, I get *very* good
timestamping into Chrony.

--
To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "unsubscribe" in the subject.
For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "help" in the subject.
Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx.