What is the configuration for a D70s / MC-DC1 connector?

Question

I have an old D70s, and I'd like to trigger it using the wired remote shutter port from a computerized device like a Sabre (which doesn't provide an adapter for this camera) or an Arduino. The connector type is a MC-DC1. It's used with a four wire remote, but Nikon doesn't provide any technical specifications.

I imagine that, since there is no power source in the trigger, it's as simple as shorting two wires together to trigger a shutter release. But what are the other two wires for? I also want to see if anyone has any experience with this before shorting wires together in case there is any possibility of damage.

I don't know that actual answer, however a cheap 3rd party wired remote actually uses 3 wires (they can use regular audio TRS 3.5mm plugs & cables as extensions); by extrapolation - ground, half-squeeze, shutter release. As they require no power (unless you want the timer functions in the remote), I would agree with your guess that they are simply shorted. Example on Amazon with multi-connectors — Tetsujin, Dec 01 '20 at 13:37
Everything you ever wanted to know about remote cable release connections: http://www.doc-diy.net/photo/remote_pinout/ — Michael C, Dec 02 '20 at 08:03
Does this answer your question? Is there a good remote timer compatible with most Nikon and Canon (and Pentax and Sony) cameras? — Michael C, Dec 02 '20 at 08:05
@MichaelC, no but Steven did below. I've accepted his answer. — Nick, Dec 15 '20 at 02:37

score 1 · Accepted Answer · answered Dec 01 '20 at 17:48

1

Pin 1 is unused. Pin 2 connects to ground to activate the shutter. Pin 3 connects to ground to activate autofocus. Pin 4 is ground.

answered Dec 01 '20 at 17:48

Steven Kersting

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What is the configuration for a D70s / MC-DC1 connector?

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