SV: [basicstamps] Re: sculpture project basic stamp and leds
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Posts: 46,084
Greetings!
Why not a MAX7219?
(The .PDF can be found somewhere on www.maxim-ic.com )
It can handle up to 64 leds, and only needs ONE resistor...
(I'm waiting on 3 of these beasties to experiment with myself :-)
:-)
Trygve
Opprinnelig melding
Fra: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=gpaiJQx5ZA0XPiJsiDyw_k5wrwjs3Ug-QVnopCMmV0jHdvAIMyIbNpfPedqb047wPq-z9otUIPU]davemucha@j...[/url
Sendt: 22. mars 2004 15:13
Til: basicstamps@yahoogroups.com
Emne: [noparse][[/noparse]basicstamps] Re: sculpture project basic stamp and leds
--- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> Yes indeed, my bad!!! As Bruce pointed out you will use SHIFTOUT
to contol
> the 74hc595's and NOT SEROUT as I incorrectly stated.
>
> So, using just 3 stamp pins, and the SEROUT command, and the
74hc595
Better make that FIVE 74HC595's ! each can do 8 LED's
Dave
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Why not a MAX7219?
(The .PDF can be found somewhere on www.maxim-ic.com )
It can handle up to 64 leds, and only needs ONE resistor...
(I'm waiting on 3 of these beasties to experiment with myself :-)
:-)
Trygve
Opprinnelig melding
Fra: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=gpaiJQx5ZA0XPiJsiDyw_k5wrwjs3Ug-QVnopCMmV0jHdvAIMyIbNpfPedqb047wPq-z9otUIPU]davemucha@j...[/url
Sendt: 22. mars 2004 15:13
Til: basicstamps@yahoogroups.com
Emne: [noparse][[/noparse]basicstamps] Re: sculpture project basic stamp and leds
--- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> Yes indeed, my bad!!! As Bruce pointed out you will use SHIFTOUT
to contol
> the 74hc595's and NOT SEROUT as I incorrectly stated.
>
> So, using just 3 stamp pins, and the SEROUT command, and the
74hc595
Better make that FIVE 74HC595's ! each can do 8 LED's
Dave
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
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Comments
<trygve.henriksen@v...> wrote:
> Greetings!
>
> Why not a MAX7219?
> (The .PDF can be found somewhere on www.maxim-ic.com )
>
> It can handle up to 64 leds, and only needs ONE resistor...
> (I'm waiting on 3 of these beasties to experiment with myself :-)
>
> :-)
> Trygve
2 reasons.
$10.00 from Digi-key
2 week lead time from Maxim for free sample.
74HC595 from Digi-key is 50 cents or $2.50 for the 5, or 39 cents
each from Glitchbuster.
But, I like the chip and the idea of a LOT of opportunity !
Dave