Subject:
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control large number of leds (?)
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 29 Feb 2004 19:37:12 GMT
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Viewed:
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5024 times
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hi.
i'm working in a project in which i'll need to control the brightness of about
700 leds. i've just begun to research solutions - and i'm not sure the hb is
the right microcontroller for the job, but i thought perhaps an hb user on this
list would have some relevant experience and could perhaps point me in the
direction of the right hardware/software combination. it seems as though i'll
need multiple microcontrollers, and additional hardware to manage the control of
a large numbers of leds.
the MAX6954 4-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander
and Key Scan made by maxim-ic was suggested as a possibility - if anyone is
familiar with it.
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3410
separate but related, i'll need the software running on the mc to be able to
return the current time, down to seconds. i know system time is available on
the hb, but gets reset everytime the device is rebooted. so - if there are any
suggestions regarding a solution for this piece as well it would be much
appreciated.
thanks in advance,
claudia
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Message has 1 Reply:
 | | Re: control large number of leds (?)
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| Wow, I thought this list was dead. Hmmm. You're missing two key bits of information : 1) Do you want to individually control each LED's brightness? 2) How often do you wish to change the brightness? If you are attempting to make a television like (...) (21 years ago, 29-Feb-04, to lugnet.robotics.handyboard)
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