Start by making a furnace, then place a bow in the center and replace the cobblestone below that with redstone
One of the more amusing toys included in the Minecraft 1.2 Beta update was the Dispenser. Created with seven cobblestone, one bow and one piece of redstone, the dispenser has the ability to store all manner of useful objects and hurl them out of itself at high speed. It is particularly useful in a defensive function if it is stocked with arrows.
When the dispenser is clicked on, you will see that it has up to nine slots which can store items to be fired or 'dispensed'. This provides quite a bit of capacity.
How To Power A Minecraft Dispenser
But all this space is fairly useless if you don't know how to hook up a dispenser. In order to fire your minecraft dispenser, you will need to make a trail of redstone dust to it and use a switch or pressure plate or similar device to activate dispenser. When the redstone glows, the dispenser will fire one arrow (or block, or flower, whatever you put in it) you can fire rapidly by toggling a switch back and forth.
How To Make A Dispenser Mob Trap
As with pretty much anything made using redstone, the dispenser has a definite potential for traps. Because you can use stone pressure plates to power the dispenser, it is a very simple matter to line the plate up with the front of the dispenser, thus creating an 'Indiana Jones' style trap. This is an incredibly simple trap to make and I can't tell you how funny it is to be going about your business elsewhere on your Minecraft property and hearing the dispenser being set off by half-witted mobs who apparently don't mind being riddled with arrows.
The noise that the trap makes is also a potential warning system, letting you know that something (or someone, if this is implemented in SMP) is getting a little too close for comfort.
Here is how to make one:
C C C Key:
C B C C: cobblestone (harvested by breaking a stone block with a pick axe)
C R C B: bow (crafted using sticks and string)
R: redstone (harvested by breaking a redstone block with an iron pick axe)
- Source: Minecraftworld.
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Rig a dispenser so that it works. make sure to put a pressure plate or lever for use. Put a lot of arrows in the dispenser, then use the lever or pressure plate and arrows will fire out.
Like a dispenser without a bow. cobblestone cobblestone cobblestone cobblestone [nothing] cobblestone cobblestone redstone cobblestone
There is no way to specifically craft a turret. However, placing arrows in a dispenser will allow them to shoot the arrows out. There may be some mods out there that allow you to craft turrets.
I've only gotten this to work once. But u put a stack of two or more (it can be any block/item) in a dispenser and power it with a lever or a button. Ex: if I put five string in a dispenser and power it I get 5 string when I power it but when you look in the dispenser, only one is gone. Hope I explained this well!
it doesn't work with buttons. you can put a pressure plate, redstone torch, or a lever right next to the dispenser