Forums > MaxMSP

max/msp >arduino> multiplex>80 leds

March 31, 2012 | 11:00 am

hello there : )

I need max to control approx 80 leds from an arduino.
where 40 or more would need to be on/latched.

I thought perhaps to build a 9×9 multiplex circuit(giving 81 outs) on a vero board, but think perhaps there would be allot of led flicker? So at each of the 80 multiplexer outputs I thought perhaps to attach an electronic latch type circuit: 555 timer or alike, so that a short logic 1 would latch on the desired led. I would need 80x 555 timers with that idea lol. that would be allot of circuitry for my project box ,might be better to buy 4 x mega arduinos.

I just wonder if anyone here has a cool solution in this area, or perhaps direct me to an IC that might help?

thanks for help. : )


March 31, 2012 | 11:35 am

HI,

Have a look at the lightuino (http://www.toastedcircuits.com/), it can control up to 70 LED (PWM) and it’s quite easy to control from Max. On of my students used it to control motors : http://www.poietic.co.uk/ourwork/floatingorchestra.

good luck !


March 31, 2012 | 5:33 pm

thanks nnimar, looks great, i may be able to use under 70 leds. so it may work : )


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