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-boun...@febo.com [time-nuts-boun...@febo.com] On Behalf Of > WB6BNQ [wb6...@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-boun...@febo.com [time-nuts-boun...@febo.com] On Behalf Of > > Peter Vince [pvi...@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.vanh...@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. > > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
