[time-nuts] fluke.l monitor for Thunderbolt .. .the sagacontinues

[WB6BNQ]

David,

I think you completely missed my point !  Too be honest, I was poking fun at your rather STIFF rebuke.

The display concept was a project that a list member did for himself and then told the list membership about it.  Fluke.L stole the idea lock, stock and barrel including the software as a pattern.

The intent was to do some simple monitoring of the Tbolt without having to tie up a computer, such as a laptop, for such a simple job.  The original item used was a USB stick product from Silabs (I think) interfaced to a LCD.

Now you know the rest of the story !

Bill....WB6BNQ


David VanHorn wrote:

> I did pretty well for the HamHud community when I did the HHII board in about 48 hours to get it out in time for Dayton.
> I might be much more tempted to put a Bluetooth interface on the Tbolt and do the display as a Droid app.
> There are many ways to go, but for something like this. I wouldn't be happy with less than a level 3 design.  This one seems to be somewhere between levels 1 and 2.
> What's your hobby time worth to you?  I don't get much so I value it roughly similar to my work time, so I don't cheap out my hobby designs in ways that are likely to cost me debugging time.
>
> ________________________________________
> From: time-nuts-bounces at febo.com [time-nuts-bounces at febo.com] On Behalf Of WB6BNQ [wb6bnq at cox.net]
> Sent: Thursday, July 07, 2011 1:58 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] fluke.l monitor for Thunderbolt . .    .the    sagacontinues
>
> So David,
>
> Does that mean you are going to layout a "proper" new board for all of us ?
>
> As I am sure you are aware, the original procesor does not appear to be available so that would mean a new design using a current or cutting edge cpu version.  Of course the new unit would have to be as cheap as the current one.
>
> While your at it, I would like a bigger display (4 lines min) that is back-lit.  Also, as you rewrite the software, I would, in addition, like all the capabilities of the Tboltmon.exe program included.  Being a Timenut, I would expect nothing but the best, so level 5 will do it.
>
> Thank you,
>
> Bill....WB6BNQ
>
> David VanHorn wrote:
>
> > There are levels of "it works"...  Level 1 is "I built one and it works".  Level 2 is "I built one like yours and it works".  Level 3 is "I built a bunch and they all work".  Level 4 is "I built a million and they all work".  Level five adds environmental issues, EMI and ESD.   I usually work at level  5.
> >
> > With that diode scheme I would expect a bunch of current-driven ripple in VCC, which could cause various amounts of flakiness.
> > Hard to say without data sheets and a scope, but that's really the point.  A solid analog regulator would be a slam-dunk level 4 solution.
> >
> > ________________________________________
> > From: time-nuts-bounces at febo.com [time-nuts-bounces at febo.com] On Behalf Of Peter Vince [pvince at theiet.org]
> > Sent: Thursday, July 07, 2011 1:00 PM
> > To: Discussion of precise time and frequency measurement
> > Subject: Re: [time-nuts] fluke.l monitor for Thunderbolt . . . the      sagacontinues
> >
> > But surely it doesn't matter David?  There is nothing critical in
> > there, it's just a display.  As long as the voltage is within the
> > processor's operating window, that is surely good enough?
> >
> > Peter
> >
> > On 7 July 2011 15:48, David VanHorn <D.VanHorn at elec-solutions.com> wrote:
> > >
> > > Vf is highly dependent on current and temperature.  The processor alone is a very dynamic load.
> > > I wouldn't trust it in a hobby project, and I can't imagine proposing it for a professional design.
> > >
> > > Without knowing much in details, a bog standard 3.3V regulator is $0.78 at Digikley, in singles.
> > > L78L33ABZ-AP
> > > If there are unusual requirements, then that might go up.
> > >
> >
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