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Custom SC-28 Switch Wiring Question


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#1
G.larson

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Hey all,

 

I'm working on a project right now that involves firing two separate banks of lights right now using different channels and switching back and forth with a remote. I've been asked to wire up a two way switch to physically move between the banks rather than changing channels on a trigger because, despite it only being a couple seconds to do, it adds up.

 

So far I've got one SC-28 mount for a hot shoe thats been split into two hot shoe units. the wiring itself is a white, green, red and blue wire and two copper, uninsulated wires which I'm assuming are grounds. one of the wires is wrapped around the white wire, the other around the whole group of wires insulated by a sheet of paper. I've currently got it wired up with the white wires leading into the switch as those seem to be the wires that tell the flashes to fire. the problem I'm having is consistency. the other wires, including the two bare copper wires (i've insulated these with heat shrink tubing) and the other wires to the same color. I'm getting mixed results, sometimes it works fine and other times only one side fires regardless of how its wired. 

 

are there any of you out there that are familiar with which wires do what and how I may resolve my reliability issues? should I be running the bare wires wrapped around the white wire up to the switch with it?

 

Thanks,

Guy

 

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#2
Merco_61

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I am not familiar with the pinouts, but I feel the wires are small for the ABIKO red crimp connectors. Isn't the smallest wire 0.5 mm^2 with these? Your switch is on the beefy side as well, which could also lead to inconsistent behaviour. I would build something around an Oak Grigsby Superswitch with soldered connector wires and use the smallest Molex crimp connectors I could find (Pico-Blade?) and insulate with heat shrink tubing. I would maybe go with Futaba J-connectors as they are so easy to source, and so are the crimping tools.

 

I agree that the bare wires are probably grounds.

 

The reason to go with the Superswitch is that it can be used for multipole switching.



#3
Merco_61

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I have a feeling that the low inherent impedance in the Oak-Grigsby switches would translate to low resistance in extremely low-powered DC applications as well, but I haven't measured things.