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led matrix? Answered

i want to build an led matrix for under 50 bucks that dose not use Arduino. is there any way to do it?

5 Replies

frollard (author)2012-12-07

Define led matrix.

You could build an led matrix 2x2 for under a dollar.

Using prebuilt 5x8 or 8x8 matrix blocks is a really quick easy way to do the physical build -- then its just a matter of driving 16 pins per module. Maxim makes some really spiffy led driver chips that do all the work for you, saving a bunch in hardware costs (although the chips themselves cost more)...they use a shift register design, so you could use a very cheap low end micro processor to address a very large matrix.

Bigger = more expensive.

Any reason not to use arduino? I particularly like the Teensy design -- in this case the teensy 2.0+ would be great; cheap, and lots of io. It's an AtMega chip that you can program yourself or use arduino environment.

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knexinventer (author)frollard2012-12-09

i was thinking like the 24x6 type
and the reason i dont use arduino is because i dont have one

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frollard (author)knexinventer2012-12-09

In that case, Teensy 3.0 and http://tronixstuff.wordpress.com/2010/07/09/review-maxim-max7219-led-display-driver-ic/
max7219 drivers

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iceng (author)2012-12-08

Try this labor intensive wiring circuit that lights two LEDs at the same time
and goes through all the LEDs all you need to do is arrange them in a
3x3x2 matrix of your choice and  NO Arduino always the same pattern.

What say you ?

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mpilchfamily (author)2012-12-08

Depending on the size of the matrix, using an arduino to drive it can be cheaper then most drivers.

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