I'm building a large 4' X 4' LED board powered off my Peggy2LE. Last night I got all of my LED's mounted on my board, which took a good while. Now I have started to solder wires to each individual LED, then to the Peggy2. It has taken me a good while to get just a few wired up, looks like I have underestimated the time it will take to solder all of the LED's.



What I'm wondering, is if there is a way to wire up the external display with multiplexing, and wire up the peggy somehow to work with this, which would greatly cut down on the amount of wires running from the board to the peggy. This would also cut down on my time.

Much Thanks for all the help in the past.

Given that the Peggy is a Multiplexed board in the first place (See FAQ at the top of this forum section titled "Peggy 2 is a multiplexed LED Matrix Display" ) or http://www.evilmadscientist.com/forum/viewtopic.php?showtopic=2979...

I would say that you could probably look at the schematic for the circuit board, mimic the circuit board's wiring on your pegboard (basically, tie all the anodes together in one direction (each row or each column), and the cathodes in the other direction), and then just run lines from the row and column headers on the circuit board to your pegboard.

It should be cleaner, quicker, and easier to turn your pegboard into a circuit board than to hand-wire each LED to its home on the circuit board.

Yes, that's right.

The Peggy 2LE has 25 horizontal rows, and 25 vertical columns. You can wire your matrix the same way-- with a horizontal "bus" wire on each row and a vertical one one each column, and then run only 50 wires from the Peggy to your matrix.

Solder... you might want to use wire wrap. Works well on LED leads. Can always retouch with solder later.

I was searching for big displays - I made a similar project and used a wire wrap tool - its very quick to strip the insulation with a pliers like stripper and then use the wire wrapper tool to wind the wire on the leg of the led - works very well you never have to solder
Mike