Mechanical Relay Logic Controller rev. 2!

Some time ago I was doing work for a company that was tasked with automating the engagement of a piece of survey equipment from an F-150 truck. The covered bed needed to 1open from the top, 2the turret needed to left, and 3finally the equipment needed to turn into position. All at the flip of a switch. Then, when the switch was flipped back, the operations needed to go in reverse.

The company I was working for ended up using a micro-controller and proximity sensors for the limit switches. However I believe this relay-centric design is still a great thought experiment and is worth taking a closer look at. The link to a video of the "laser truck" the circuit was designed for is located here.

I would think this would be a great electrical design for the operation of the landing gear for retractable gear, light aircraft.

There were only a few rules to follow:

Here is the circuit I came up with:

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