There is no pin-compatible replacement processor, at least not in a
compatible package.
I could use a C8051F300 which is available in a 14 pin SO package, but I
have not had time to switch the software over to that chip. It would not be
too hard to wire the SO-14 package to an existing board
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.
You forget that this Fluke.L guy's first design replaced three
diodes with wire jumpers to save the cost of three diodes. The
builder is cheap beyond all reason. To a guy who'd replace diodes
with wire $0.78 must seem like a fortune.
I'd use a 3.3 volt reg also but in China 78 cents is what?
It is between four and five Yuan. Four Yuan at the local market will buy
what four dollars will buy in the US (as long as you are not
buying imported goods).
jcc
On 7/7/11 11:06 AM, Chris Albertson wrote:
You forget that this Fluke.L guy's first design replaced three
diodes with wire jumpers
http://www.gpsworld.com/gnss-system/news/final-report-fcc-working-group-lose-lightsquared-l-band-11848
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Nice summary:
“In the end, the laws of physics won out.”
On Thu, Jul 7, 2011 at 1:57 PM, Pete Lancashire p...@petelancashire.com wrote:
http://www.gpsworld.com/gnss-system/news/final-report-fcc-working-group-lose-lightsquared-l-band-11848
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It occurred to me that after the Sirius/XM merger, there is a chunk of
spectrum not really being used efficiently. You have to wonder what the
suits at Sirius/XM are thinking. Dumping one of the bands will piss off
millions. But dumping one of the bands and putting something like
Lightsquared
On Thu, Jul 7, 2011 at 11:00 AM, Bob Bownes bow...@gmail.com wrote:
“In the end, the laws of physics won out.”
Of course the laws of physics won out in a GPS Wold summary.
In the real world the FCC will figure that as long as car navigation
GPS still work 85% of the time that is good enough.
Majdi,
If nobody comes through with a pdf version, I can make a hard-copy version
of the manual for you. (I don't have a scanner.)
In that case, contact me offline and I'll make the copy. There will probably
be about a 1 week delay for me to get it done.
73,
Greg
- Original Message
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
On 07/07/2011 11:52 AM, Chris Albertson wrote:
On Thu, Jul 7, 2011 at 11:00 AM, Bob Bownesbow...@gmail.com wrote:
“In the end, the laws of physics won out.”
Of course the laws of physics won out in a GPS Wold summary.
In the real world the FCC will figure that as long as car navigation
GPS
I just had a phone conversation with someone who said she was a reporter
for the NY Post
about the comment I put in at the FCC regarding the Lightsquared report.
I told her I heard about the issue at time-nuts.
Chris
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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
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
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
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
I think I'm missing a key idea.
The proposal is to turn off TEC. I think that's because it's a
pain-in-the-ass for the guys who have to run the big control loops.
Why not just reduce the time-constant on that portion of the control loop.
Instead of trying to catch up each day, how about
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