VGA to RCA/CAT Cable by yulius eka agung seputra,st,msi

The basic idea behind the cable is to use a CAT5 or CAT5e computer cable to carry the video signal. The cable is pretty easy to make if you have some basic soldering skills. Works for distances up to 50'. Full credit for this idea goes to MrWigggles on AVSforum, in this thread.



A couple of assumptions here, the projector has a 15 pin VGA style video port on it. If it has 5 BNC connectors instead, then the recipe changes a bit. You must use three pairs for R, G & B, and split the fourth pair for H&V, each connected to a BNC.



I've attached a picture of a VGA connector. You will need two male connectors with hoods. I recommend the metal hoods. You can get them at Radio Shack or any decent electronics parts store. You will also need a length of CAT5 or CAT5e cable. The shielded variety (STP) is supposed to work better than the unshielded (UTP) but the UTP is much more common. I used UTP and got good results.



Here are the pin outs. A CAT5 cable has 8 conductors in 4 color coded pairs. The ground connections are all common and the DDC DAT is for plug and play detection and likely won't work with your projector any way. I've added what CAT5 conductors I used for what pins in the table below. The same connections on both ends.



VGA Video connector pinouts:

Pin # - Signal Name - CAT 5 Conductor

1 - Red - Orange

2 - Green - Green

3 - Blue - Blue

4 - No Connection

5 - Ground - No Connection

6 - Ground - Orange/White

7 - Ground - Green/White

8 - Ground - Blue/White

9 - No Connection

10 - Ground - No Connection -

11 - No Connect

12 - DDC DAT - No Connection

13 - Horizontal Synchronization - Brown

14 - Vertical Synchronization - Brown White

15 - DDC Clock - No Connection



I recommend checking all of your connections, from pin to pin, for continuity with a multimeter. You may need to use a short piece of wire (a strand from the CAT 5 cable will work) to reach into the pin sockets.