User:MentalMouse42/Sandbox/Farm Design

Pumpkin/Melon Farm Design 4
The following stack-able design sacrifices space efficiency in order to fully automate harvesting. The total area of the farm is 13 blocks by 7 blocks, with alternating piston and farm layers. Farmland is hydrated by water flowing down from above. A pressure plate at the end of the collection area on the bottom activates a redstone torch tower, which in turn activates each piston layer. Melons fall down the empty middle area into flowing water at the bottom layer. (To speed up collection, place ice blocks under the watercourse.) The farm can be lit from within by glowstone or jack-o-lanterns. If using jack-o-lanterns for lighting, temporarily put dirt blocks in place of the pistons, put jack-o-lanterns on top, and then replace the dirt blocks with pistons.

The piston layer:

[b][b][b][b][b][b][b]                                      b][b]  [b][b<-R]

The farm layer:

[b][b][b][b][b][b][b] [b]  [f]   [f]   [b] [r][j][d]  [d][j][r] [r][j][d]  [d][j][r] [r]	[f]  [f]   [r] [r]  [f]   [f]   [r] [r][j][d]  [d][j][r] [r][j][d]  [d][j][r] [r]  [f]   [f]   [r] [r][b][b]  [b][b][r] [b<-R][b]  [b][R->b]

Alternate piston and farm layers until reaching the top of the farm. After the last piston layer, build the following instead of another farm layer:

[b][b][b][b][b][b][b]	     [B] = place blocks here temporarily, [b][B]  	 [B][b]	       	    remove after filling water trough [r][j]        [j][r]	      	    in the top-most layer [r][j]        [j][r] [r][B]        [B][r] [r][B]        [B][r] [r][j]        [j][r] [r][j]        [j][r] [r][B]        [B][r] [r][b][b]  [b][b][r] [b<-R][b]  [b][R->b]

The top-most layer:

[b][b][b][b][b][b][b]	     [w] = place 1st and 3rd water source [b][w][b]  [b][w][b]	       	    blocks, refill bucket from 2nd [b][w][b]  [b][w][b]		    block, place 5th water source [b][w][b]  [b][w][b]		    block, refill from 4th, etc.  [b][w][b]   [b][w][b] [b][w][b]  [b][w][b] [b][w][b]  [b][w][b] [b][w][b]  [b][w][b] [b][w][b]  [b][w][b] [b][b][b]  [b][b][b]

This is based on the following video