Trigger Button Circuit

[Jason Wingrove]

Anyone tackled this?
Very simple circuit but can't say I'm having much luck with it rolling my camera.

Yes there's great off the shelf solutions but they're not relevant for my particular project.
thx
jas

[Alex Frausto]

http://www.red.com/faqs/epic/accessories

What are the GPI Trigger start/stop requirements?

Start Record: Ground - 3.3V Transition
During Record: Hold at 3.3V
Stop Record: 3.3V - Ground Transition
During Stop: Hold at Ground

[Jason Wingrove]

Thx alex, thats in the Epic manual too along with the circuit diagram tho.
hoping someones had to solve the issue with this circuit or getting the camera to work with it
jas

[Alex Frausto]

What's the issue? In my experience it works fine.

[Jason Wingrove]

Ah ha
Having cut the white bnc off to the '3 BNC sync cable' to find the correct trigger wire colour, Ive found they use a different colour wire on the other side of the junction block
SO yellow it is :-)

[Tom Gleeson]

Jason,

Have you seen the Lemac solution? They are selling a small trigger box. I'm hazy on the detail.

[Dave Weber]

Jason,

I made one with about $20 in parts from radio shack. I looked up how to read an electronics schematic on the web and then followed the one provided by red. Pretty easy.

[Jason Wingrove]

Thx Tom

Im modding an old Arri BL4 side handle i inherited. Almost as ergo as an Aaton and will plug directly into the Epic
jas