LED Matrix Coffee Table
To start this project you will need:
200x RGB Common Cathode LED's
1x Arduino Mega
2x Foam Boards
36+ 100ohms Resistors
Lots of wire (Different colours ideally)
Hot Glue Gun + Soldering Iron
4x 44mm x 44mm x 450mm Planed wood
4x 18mm x 100mm Planed Wood
676mm x 516mm Frosted Acrylic
Stage 1:
Cut a foam board to 640mm x 480mm
This will be the inner size of your coffee table.
Divide the board in to columns and rows at intervals of 40mm. you should have a grid of squares (40mm x 40mm)

Stage 2:
Cut long 35mm thick strips and glue onto board in same direction.
Stage 3:
My foam board was 5mm thick which ment I now had 35mm
space in each row, so I need to cut 35mm x 35mm small squares to fill into make equal square holes.
Use a hot glue gun to glue every thing on to the board.
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Stage 4:
Punch 1 hole in the middle of each square divider.
There are 2x sets of holes in some of my divider as I am adding a second type of LED to some of my diveders which
will change colour by them selves slowly.
This is a extra option.


Pcd
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Stage 5:
I am currently waiting for my RGB LED's from China so I have moved on to the next job.
Making the Colour Controller. Using 100ohms resistor I made a controller board where each output could be soldered to the board and then be diverted into the Arduiuno board. On your left is 12x Red with 100ohms, 12x Green with 100ohms and 12x Blue with 100ohms,
on the right is Black (-Cathodes) no resistors needed and then above that is my auto changing random LED's with 18x resistors (this is optional).
<--- See pictures

Stage 6:
Time to start on the wood.
I cut 4x 44mm x 44mm to 400mm long for the legs and 2x 18mm x 145mm x 428mm long for 2 sides and
2x 18mm x 145mm x 588mm long foth 2 sides.
glue them all togeather and it should give you a centre area of the size of your foam matrix board (640x480)
Almost done just waiting on a table top Acrylic