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Topic: arduino and 624 LEDs (Read 807 times) previous topic - next topic

jwflammer

hello i want to eater use 624 LED's or 39 8X8 LED matrices which is easier and how do i make them operate on my arduino mega? bread boarded first then soldered to a custom PCB.

Grumpy_Mike

#1
Jan 21, 2010, 01:47 pm Last Edit: Jan 21, 2010, 02:19 pm by Grumpy_Mike Reason: 1
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which is easier

using the LED matrix especially if you let external hardware handle the multiplexing.
Team each matrix with a Max7219 or MAX7221. Then talk to the 39 chips cascaded in shift out fashion like shown in Figure 3 of the data sheet. This method could also be used with individual LEDs as well if you want.

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bread boarded first

You would be mad to bread board any more than two of these, you will never do all 39.
This is an expensive project.

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