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By iros
#73687
I'm new to electronics so this might be a bit of a dumb question.

I'm trying to create a 16x16 LED matrix. I was looking at the 8x8 matrices (http://www.sparkfun.com/commerce/produc ... cts_id=682) and was wondering if I could use 4 of these to make a 16x16. I looked at the schematics but I couldn't think of any way to do this off the top of my head.
By daok
#73702
Yeah you can do it. I have a thread with more than 9 pages that show you how with an Arduino board + Shift Register + Sink Driver. I am new too and so far I have 2 Led Matrix. Soon I will be able to add more than 8, so 2x2 is really possible.
User avatar
By FartingMonkey92
#73734
I think you've got two options:

Buy four of Sparkfuns pre-built modules and hook-em together
Or look at the schematics to see how they built theirs and roll your own.

The first may start to look expensive but unless you master the learning curve first time, it may end up
costing you a lot more starting from scratch than the pre-buit modules (burnt parts, tools etc.)
By n1ist
#73782
My design at http://www.ardai.net/DMXStatus is a 16x16 matrix with 7 bits of intensity per dot (8 if you don't mind a bit of flicker)
/mike
By mikeselectricstuff
#73805
To keep the mux rate sensible to get decent brightness, you probably want to arrange it electrically as a 32x8 matrix
By Mike, K8LH
#73847
n1ist wrote:My design at http://www.ardai.net/DMXStatus is a 16x16 matrix with 7 bits of intensity per dot (8 if you don't mind a bit of flicker)
/mike
You got a schematic for that in something other than ExpressPCB format by any chance, please?

Mike