A nice block to help you guys automate crops such as sugar canes or anything else you can think of!
 Simply place a block or item inside the interface of the block detector and it will emit a redstone signal as soon as that block touches any of the sides! Also works with buckets of lava and water to detect water and lava... obviously...

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Emits a redstone signal when the block in the interface touches any of the sides. Can be useful for farming and growing stuff! 
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Look what happens if you put seeds in it:D


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