The Four Player Coffee Table Pong Video Game.

Step 5 Solder the LED matrix.

Once the LED's have been placed in to position, it is time to solder them together into a matrix.

1. Get your mains wire and strip it open until you get down to the individual strands. This is what we will use to connect the anodes together into rows and then the cathodes into columns. You will need 60 lengths in all (thirty rows by thirty columns) - (see first photo)
2. Solder one end of one strand of wire to the end of the bottom row of Anodes. then weave this strand in and out of the rest of the anodes in this row until you get to the other end - this will hold the wire into position ready for soldering MAKE SURE YOU PUSH THE WIRES DOWN ALMOST TO THE BOTTOM - WE NEED TO LEAVE ROOM FOR THE CATHODES WHICH WILL RUN OVER THE TOP OF THE ANODES. (see second photo)
3. Solder each of the remaining anodes in this row to the strand of wire. (see third photo)
4. Cut the overhanging legs off the LED's (see fourth photo)
5. Repeat this for the remaining 29 rows of Anodes! (see fifth photo)
6. Now do this same process for the cathodes but run these 90 degrees to the anodes (I.E. so running left to right will be the anodes, then running top to bottom will be the cathodes.) YOU NEED TO MAKE SURE THE ANODES DO NOT TOUCH THE CATHODES, MAKE SURE THAT THE CATHODES ARE UP HIGHER THAN THE ANODES. (see sixth photo)