Hi
Again, in case anybody else is interested ….
https://www.ebay.com/itm/ON-SALE-U-BLOX-ublox-LEA-M8T-0-10-HUAWEI-GPS-Timing-Module-Board/333778776570?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
Turns out to be a bit more than what the listing implies. The parts I got
also came with a
On Thu, Feb 4, 2021 at 4:09 PM Hal Murray wrote:
> In case anybody isn't familiar with ARM SOC chips, they typically have a layer
> of muxes between the external pins and the internal I/O devices. I don't know
> if the chip used in the Pi-4 works this way. Quite likely.
>
>
> The system designer
Some years ago these modules were mentioned on Time-nuts. They were typical
Ebay stuff. I purchased one and really didn't do anything with it. Time
goes by. Was organizing stuff and had forgotten I even had it. Fired it up
and have to say its a pretty impressive little unit.
Like the fact that when
Hal Murray writes:
>
> p...@phk.freebsd.dk said:
> > I dont know if the datasheet for the Rpi4 is available to check what the
> > requirements are, but you should probably expect to need some kind of PLL
> > chip to deliver a clean 54 MHz on the RPi4, locked to your external
> > frequency
p...@phk.freebsd.dk said:
> I dont know if the datasheet for the Rpi4 is available to check what the
> requirements are, but you should probably expect to need some kind of PLL
> chip to deliver a clean 54 MHz on the RPi4, locked to your external
> frequency.
Plan B would be to avoid the 10=>54
Hello again everyone!
I wanted to send out another message regarding the TimeHat to let you all know
that I made a short video that includes some more information about it,
including what all you get and how to set it up and use it. Even if you don’t
get one of these modules from me it may help
Dear all,
When the availability of some surplus Ublox M8T modules was announced, I
ordered a few of them and started designing a small breakout board for them.
The design meanwhile had a little cool-down period and matured somewhat. Since
I realized that for most people it can be quite daunting
On Donnerstag, 4. Februar 2021 11:20:23 CET Avamander wrote:
> Hi,
>
> I was wondering if anyone here has replaced the 54 MHz oscillator on the
> Raspberry Pi 4 with a GNSS-disciplined rubidium standard? An overkill
> upgrade, but is technically doable? What hardware would it take in addition
> to
On 04/02/2021 10:20, Avamander wrote:
Hi,
I was wondering if anyone here has replaced the 54 MHz oscillator on the
Raspberry Pi 4 with a GNSS-disciplined rubidium standard? An overkill
upgrade, but is technically doable? What hardware would it take in addition
to a GNSS-disciplined rubidium stan
Avamander wrote:
> I was wondering if anyone here has replaced the 54 MHz oscillator on the
> Raspberry Pi 4 with a GNSS-disciplined rubidium standard?
The same things as replacing the XTAL on an RPi 1…3 I'd guess. So, you need
to remove the XTAL (hot air rework station), figure out which pin yo
Avamander writes:
> I was wondering if anyone here has replaced the 54 MHz oscillator on the
> Raspberry Pi 4 with a GNSS-disciplined rubidium standard? An overkill
> upgrade, but is technically doable? What hardware would it take in addition
> to a GNSS-disciplined rubidium standard and
Hi
> On Feb 4, 2021, at 11:37 AM, Avamander wrote:
>
> > 2) Grab any of the various conversion chips to take the 10 MHz to 54
> (= I don’t know of a standard that puts out 54 MHz). Wire the 10 into it
> and pull the 54 off of it. (Yes, the chip needs to be programmed and
> there will be various
> 2) Grab any of the various conversion chips to take the 10 MHz to 54
(= I don’t know of a standard that puts out 54 MHz). Wire the 10 into it
and pull the 54 off of it. (Yes, the chip needs to be programmed and
there will be various bits and pieces connected to it)
Do you have any recommendation
Hi
Pretty basic approach:
1) Get a Rb standard.
2) Grab any of the various conversion chips to take the 10 MHz to 54
(= I don’t know of a standard that puts out 54 MHz). Wire the 10 into it
and pull the 54 off of it. (Yes, the chip needs to be programmed and
there will be various bits and piec
Hi,
I was wondering if anyone here has replaced the 54 MHz oscillator on the
Raspberry Pi 4 with a GNSS-disciplined rubidium standard? An overkill
upgrade, but is technically doable? What hardware would it take in addition
to a GNSS-disciplined rubidium standard and a Pi 4?
Here's where I got my
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