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Haute Savoie / Genève
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Hello,
I begin with my brand new Arduino 2009, and I have a question:
 
If I want to drive 120 leds ( only 5 simultaneously); is there any easier way than multiplexing?

I'm afraid multiplexing is too complicate for my level!

Thank you for your advice!
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In theory, I suppose you could do 120 LEDs with charlieplexing and 12 I/O pins.

Otherwise, you could do it with fifteen 8 bit shift registers.
« Last Edit: April 26, 2010, 06:30:09 am by GrooveFlotilla » Logged

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Haute Savoie / Genève
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Many thanks for your answer, I will investigate, hoping Charlie Plexing
is a cooperative fellow! smiley



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.... or you could use a MAX6594, that will drive up to 128 LEDs. Yes it is a charilplexed design but it is all done in the hardware so there is no programming overhead.
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Haute Savoie / Genève
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Cool, I will try this MAX 6594, it seems more accessible for me!
thanks to you all again
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