[time-nuts] LTE-Lite module
phk at phk.freebsd.dk
Mon Oct 20 19:58:12 UTC 2014
In message <CAGVVbuGv_-cFDAA=T6hGE1ey32=oMxXcg-cxUb5sCusAo_T5eA at mail.gmail.com>
, Brian Lloyd writes:
>So why not do the GPSD hardware, software, [...]
It would be a really worthwhile project in general, and it could be
made very general with very little trouble.
I would find a cheap ARM board (Olimex ?) that can support ChibiOS:
and add a "cape" PCB with a high resolution DAC for EFC control
and two phase detectors, one for 100kHz-20MHz frequencies and one
for 1-100Hz frequencies. (The latter could have a TVB PIC divider
as an option on the reference input).
Maybe add a couple of isolated distribution amp outputs also ?
That would make for a really experimenter-friendly computer PLL
People who want to code can do so, people less ambitious could
tweak PLL params in the default firmware using the ChibiOS command
Count me in...
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
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