How To: Build a 1024 Port Controller for $100

HowTo: Build a 1024 Port Controller for $100 (Peter Olsen)

Step 5 : Completed Board

Here is a completed 64-port board, including Mosfets and output connectors. (Actually this one is missing the 8th chip). The mosfets are suitable for switching 24v and 35v lights in Australia. For direct 110v switching in the USA you would need to drive SSR's from the outputs.

Note that this board includes a PICAXE chip and realtime clock on the left. They would not be required for a PC driven system. It also includes an optional power supply.