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Switching an array of water sprinklers

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bongkk

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I am prototyping a controller to switch an array of garden sprinklers sequentially. I live in an area of low water pressure such that I can only turn on one sprinkler at a time. The objective is for an array of water sprinklers to switch on sequentially. There are no control wires. All the the controllers are connected in parallel to single power cable. The power is controlled by a timed dusk/ dawn sensor. It is intended for use on my solar powered system which also consists of garden lights. The AC power in my case is supplied from an inverter unit. Attached is my prototype. Comments welcomed.

Added after 4 minutes:

Sorry guys. The image didnt get through. Here it is.

 

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