Very basic. If you put the redstone down a level, you will need repeaters going to each piston, but then you can fill the top layer so no redstone is visible and you can walk over it. Also it's annoying to walk over the whole farm to collect the melons. Decent enough tutorial.
@Arin_Sugakuchi: BUDs aren't that useful for melon farms(melons produce lots of entities and BUDs take up lots of space), usually the best method is to push a button and have them all break and flow down a stream to you.
Just for automatic reasons.
eDark Pony ftw? Click the little plus sign over there ---> if I helped you or made you laugh?
@Arin_Sugakuchi: BUDs aren't that useful for melon farms(melons produce lots of entities and BUDs take up lots of space), usually the best method is to push a button and have them all break and flow down a stream to you.