There's no high tech electronics employed in my Rov, it just uses plain switches for control. All the parts were obtained from Radio Shack.
This is how the switches are set up in the stinger. This setup allows for simple forward reverse for the thruters.
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The Tether is made from two 20 foot lengths of 3/8" vinyl hose. The sections are connected together with 3/8" hose barb and hose clamps which turns out to be a bad idea. The hoses are not flex able enough and I will have to change them to a better design in the future.