What you are asking for is a diagram for a LANC control. Do a google search for lanc. You will find diagrams out there but understand, it will require a microcontroller and software, not simply some wires and switches. You can buy a new control for under $40.00. Try B&H, I did. Not worth building unless you want something really special. You could always buy a cheap one, take it apart, make your own control panel and use their circuit board. Hope this helps - Jim

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