I probably can, but doing it this way is more fun :-).

I'm just going to lower the resistor values to get the correct =
brightness
then (without exceeding the PIC ratings of course).=20

  _____ =20

Andr=E9 Miller =09

-----Original Message-----
From: pic microcontroller discussion list =
[mailto:PICLIST@MITVMA.MIT.EDU] On
Behalf Of bertrand.rozier@PRAGMATEC.NET
Sent: 17 March 2004 02:41 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC:] Multiplexing seven segment displays, correct =
resistor
values?

Hi,

I think there is not possiblity to improve that in soft.
Could you confirm that you can not add a 7-segment drivers?

BR
Bertrand Rozier
www.pragmatec.net
PICOS18 Solutions

Selon Andre Miller <andre.miller@BLUERIVER.CO.ZA>:

> Hi,
>=20
> If I increase the 'on' time for a display, wont this then also=20
> increase the 'off' time for the other displays, thereby negating the=20
> benefit? I should be able to get this same effect by increasing the=20
> prescaler on my timer interrupt that drives the displays. I tried=20
> changing this and the lower frequency of updating didn't seem to make=20
> a difference, except that it starts to flicker noticibly when its too =
low
:-).
>=20
>   _____
>=20
> Andr=E9 Miller =09
>=20
>=20
> -----Original Message-----
> From: pic microcontroller discussion list=20
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Spehro Pefhany
> Sent: 17 March 2004 12:31 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC:] Multiplexing seven segment displays, correct=20
> resistor values?
>=20
> At 08:12 PM 3/17/2004 +1000, you wrote:
>=20
> >  If you have the time to spare, leave the leds on for a while, few=20
> >mS, then switch to the next segment, and so on.
> >  In other words, increase the "on" time compared to the off time.
> >  Only works if your chip hasn't much else to do.
>=20
> He's using interrupts, so his program can walk and chew gum at the=20
> same time, no problem. It shouldn't use more than a couple percent of=20
> the processor throughput.
>=20
> Best regards,
>=20
> Spehro Pefhany --"it's the network..."            "The Journey is the
> reward"
> speff@interlog.com             Info for manufacturers:
http://www.trexon.com
> Embedded software/hardware/analog  Info for designers: =20
> http://www.speff.com
>=20

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