Prop powered RGB matrix driver

Rayman

Here's my test layout for a Propeller powered controller for·an 8x8 RGB LED matrix!

The cheapest version of the matrix I've found is halfway down this page:
http://evilmadscience.com/partsmenu/89-led

No idea if it works yet, but I'm about to drop $50 to get some ExpressPCB miniboards with this circuit...

If all goes as planned, this will be very similar to the Sparkfun variant, but with Propeller power.·
Hoping for 24-bit color on every LED be able to drive about 12 mA average current on every LED.
(If you look closely at the Sparkfun version, you'll see it cannot drive the LEDs anywhere near their
20 mA limit).

If it does work, my own evil plan is create a big, maybe 32x32 panel...

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My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm

Rayman

Just found compatible 8x8xRGBs on Ebay for $12 each (for qty 10)...

This makes a 32x32 or 48x48 array quasi doable...

There are also some square ones for $15 that might look a lot better...

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My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm

wjsteele

Hey Ray, what do the blue pads represent? I'm not familar with Express' designer.

Bill

Rayman

Yeah, that shows the only real help the program gives you to match a layout to a schematic...
You can link a schematic to a layout and then when you click on a pad in the right way, it'll
show you all the other pads that one should connect to.

So, hopefully, all the blue pads are wired together...

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My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm