Building a Frame for An In Wall Touchscreen

In this forum you can share tips and tricks on how to use Cinemar products with some program or a task that you want it to do. So no one has to reinvent the wheel if you already did! (No questions in this forum only solutions, questions will be deleted without hesitation.)

Posts: 62
Joined: Mon Sep 25, 2006 8:33 pm
Location: Charlottesville, VA

Postby chiphayes » Fri Mar 30, 2007 8:16 pm


Page 7 of the Elk M1 installation manual has a pinout for a serial port cable coming off their RS232 output.

They show only three pins being used to connect the Elk to a PC serial port (all three go from same pin on one connector to same pin on the other):

#2, 3, and 5

Looking it up, that's received data, transmitted data and common ground.

Makes sense, but for years I've always thought a standard serial interface must use more than that. I guess most of the other pins are used for modems, and not regular old serial connections.

Thanks again,

Senior Member
Senior Member
Posts: 236
Joined: Thu Jun 08, 2006 12:56 am
Location: Chicago

Postby djsl » Fri Mar 30, 2007 8:57 pm


All you are doing is making a serial cable extention. The easiest way to do this is to use two db9-rj45 adapters, one female one male, and then connect them with any length cat 5 cable.

The end result from your cable would be the same as a serial extension cable, pin 1 on one end to pin 1 on the other end and so on.

Take the one of the adapters and put all the pins in.
connect the cat 5 between the two.
Now to match up the pin 1 to pin 1, stick a continuity light in pin 1 of the first adapter and find the wire on the second adapter, once you find that wire simple put it in pin 1 of the second adapter, and do the same for all the pins.

Now you have a serial cable extension.

You do not have the required permissions to view the files attached to this post.

Return to “Tips, Tricks and Tutorials”

Who is online

Users browsing this forum: No registered users and 1 guest