Re: PINLED Displays

On 21 Apr, 21:34, "GPE" <See_GPE_webs...@xxxxxxx> wrote:
"displayuser" <foers...@xxxxxxxxx> wrote in message

news:1177071874.948364.311330@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx



On Apr 20, 1:49 pm, "seymour-sha...@xxxxxxxxxx" <seymour-
sha...@xxxxxxxxxx> wrote:
On Apr 20, 7:39 am, displayuser <foers...@xxxxxxxxx> wrote:

What kind of problems do you have withPinLEDproducts? I always notce
a negative opinion when I read between your lines.......
Andreas fromPinLED.

Andreas, my personal concern is the extra loading of the +5. You
should make a kit to add an additional supply for the displays just so
someone doesn't buy the product put it in and then have other
problems. Yes, I know that if that happens it means that there's
something else that needs to be addressed, but average users who do
not fix their own pins will not know this. Why not come up with an
addon that will eliminate ever worrying about this? Pretty sure
that's why Fred brings it up all the time but I'm not speaking for him
I'm sure he'll chime in.

Also it would be nice it they were not as bright/intense.

-scott CARGPB#29

The extra load for the power supply is not a problem. The power
consumption that you will find on our support site (800mA) is only if
all segments are on (displaytest). Under normal operation the display
will take much less (300-500mA). At this point we have sold over 1000
units and not I repeat not one power supply is gone bad. So all
opinion about PinLEDs will over stress the 5Volts are bullshit. Our
new display set 10101 is not so bright any more and take only 500mA
with all dots on (displaytest) and 200-300mA under normal conditions.
We went down with the brightness a little bit because the value of the
LED current resistors went up - but we don't make a solution with a
adjustable brightness control. I don't know how Marco/Roddendog will
do this, but only to add a adjustable resistor is the wrong way,
because one single adjustable resistor will not work. To make sure
that you turn down the intensity on all LEDs the same amound you have
to add "32 adjustablbe resistors" One for each LED per segment.

Andreas

Wow, it is sooooo wrong to adjust the full set of displays by using
individual resistors.
You do not use the same supply voltage for both logic and display's. You
split the supply -- use a logic supply voltage and a display supply
voltage. They can both originate from the same incoming +5V supply - but
use adjustable regulation on the display supply. You set your current
limiting resistor for the maximum display voltage that will be seen across
the resistor/LED pair (display supply). Then - you adjust the display
voltage up or down to adjust brightness for full sets of displays.

Another more effective methond of adjusting brighness is duty cycle
variation. This one is used far more often as it's easier to include in new
designs. But - the Williams & Bally boards don't fit nicely into this
category. This would require quite abit much additional circuitry.

BTW --- when do you expect the price of the display boards to come down? I
know how much the NRE is to have custom LED displays designed plus what it
costs for the individual displays. Based on your pricing, any NRE you paid
for to have custom displays must have been paid off long, long ago. I see
no reason why LED display boards can't be in same price range or LESS than
the gas discharge prices.

-- Ed
(yes, it IS a bad hair day)

lol..well...i cant help it but i like to to have the orginal displays
in my pin...they are easy to fix and you can get new glass tubes
cheap !

So NO Pinleds display in my 80`s Bally pins !



.

Relevant Pages

  • Re: PINLED Displays
    ... Under normal operation the display ... to add "32 adjustablbe resistors" One for each LED per segment. ... You do not use the same supply voltage for both logic and display's. ... voltage up or down to adjust brightness for full sets of displays. ...
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  • Re: PINLED Displays
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