|
|
HowTo: How to build a 16 channel parallel port controler
( Robert Stark)
Step 3 : Making the PCB
|
| | I chose to have the printed circuit boards made professionally. Because of the size of the board, some of the traces were very small and a double sided design was nessassary. I chose to use a service called ExpressPCB (see expresspcb.com). They have a software package you download, you design your board, and upload your design back to them with your credit card info. Their cheapest option is their MiniBoard service. You can get 3ea 3.8 x 2.5 inch boards for $62. This includes thru hole plating, tin flow plating and 2 day shipping. What I did was to actually design a plug-in type board small enough to fit two on each PCB. I sent them my design, and then just cut the boards in half and presto! 6 boards for the price of 3!! Here's a picture of the board design. If you want to build this board, email me and I will send you the ExpressPCB board file so you can order your own. I also have a 32 port version that you can see if you look in the photos section.
|
|
|
