- Wooden Wagon (Barrel)
- Regular Barrel
- Laser (2)
- 1 button
- Wire Repeater (2)
- Coal Sack (Optional)
How to make it
First, configure 1 laser as shown:
Also make sure that it shows only the starting point of the laser and make sure it is on at the start of the game.
Then turn the barrel sideways and put it like this + the laser:
That will be the main cannon. Configure the button as shown.
Then wire the button to the wire repeater and set the wire repeater to 0.1 delay.
Wire the button to the 1st laser, aka the laser you put on the main cannon like this:
Now for the second part.
Configure the second laser as shown. Make sure you put it to not activated on game start.
Wire the wire repeater to the 2nd laser (above) like this:
Now configure the button like this:
Wire the 1st wire repeater to the second. Set the second wire repeater to delay 1.0 or 1 second. And wire the 2nd wire repeater like this: (On the second laser, wire it so that the second laser is off)
Then wire it to a button, like this:
(Yeah, I know that the button part was completely unnecessary, but keep it that way.)
Place the coal sack next to the cannon, and the final product should look something like this: