BNC TTL Triggers and USB Output

Projects General Guidance
1

Hi there,
I was wondering if anyone had any tips for this project for my lab.

We want to use an Arduino board to trigger X which then activates Y. We want to have Y tell Arduino when it's done completing a task, and then trigger a camera directly from the Arduino or via the USB port. My concerns are that input to X and output from Y is via a 75ohm coaxial cable with a BNC connector. How do I connect that to an Arduino?

This is very similar to what I want to do: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1281692192 but it's very vague...

Any help would be appreciated thanks.

2

jeesh:
Hi there,
I was wondering if anyone had any tips for this project for my lab.

We want to use an Arduino board to trigger X which then activates Y. We want to have Y tell Arduino when it's done completing a task, and then trigger a camera directly from the Arduino or via the USB port. My concerns are that input to X and output from Y is via a 75ohm coaxial cable with a BNC connector. How do I connect that to an Arduino?

This is very similar to what I want to do: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1281692192 but it's very vague...

Any help would be appreciated thanks.

Assuming these are TTL level signals (and not something fancy - which they might be, given that shield cables are being used?) - you could just hook up some female BNC connectors to plug the cables into; all a BNC connector is, is a two lead connector, where one lead is connected as a grounded shield, and the other is a signal lead - in a coaxial cable (meant for use in a noisy environment - which once again, makes me wonder about the signal levels involved).

3

Without knowing what these signals are it is impossible to give you any sort of solution or evaluation.

4

Yes I believe these are all TTL trigger signals.

5

So if that is the case get a BNC socket and solder a wire from the center pin to your arduino input and outer sheelding to the arduino ground.