Introduction: How to Make a Fire Charge Cannon in Minecraft
This is a tutorial on how to make a working fire charge cannon in Minecraft.
Step 1: Decoration
Add walls and any stair to the top and bottom, and three walls between.
Step 2: Redstone 1
Add 6 redstone dust behind the walls and stairs.
Step 3: Dispenser
Add dispensers between the stairs, above the redstone.
Step 4: Redstone 2
Add a redstone torch onto the right dispenser, and redstone dust on both.
Step 5: Pistons
Just in front of the dispenser, add a piston, one block down, which should be powered. Then add a block above.
Step 6: Power
Add a button on top.
Step 7: Done!
Add fire charge to the dispensers and you're ready for fire!