OM led sign board pcb

Here is the schematic and pcb layout of OM symbol.

Custom single layer pcb artwork

Resistor : 330ohm
Resistor Lead spacing: 0.4 inch
Resister power : 1/2watt or 1/4 watt 

LED lead spacing : 0.1 inch

Copper Trace
Silk Screen Layout
3D Rendering

Custom LED Display

From very long time I was thinking of making a custom LED Board. But i was reluctant to make it. Because of the calculation of current and voltage. It is a simple Ohm law follower with the addition of heat exchange equation taken into account.