Yes, this is exactly what the title says it is. This instructable will teach you how to control any Nerf Vulcan, with your Arduino. The provided tutorial will just shoot for 2.5 seconds, stop for 2.5 seconds, and so on. It is like a "hello world" program for controlling your Nerf Vulcan. It can easily be expanded to do whatever you want, you could use a proximity sensor to make security system, you could use an ethernet shield to shoot it remotely, the possibilities are endless.
Here's a quick demo video:
Step 1: Supplies
Here is the list of what you'll need:
1 Nerf Vulcan
1 Arduino or clone
1 5v Relay Switch
1 NPN Transistor
1 10k ohm Resistor
A Soldering Iron
Step 2: Making the first (and only) cut
In order to do this mod, you must open up Nerf Vulcan. It would be a pain to open up the whole gun, so you need to make just one cut. This will allow you to open up just specific region of the gun.
Begin by marking the region of the gun you are going to cut. (See second picture)
Then use what ever method you would like to cut along the line to the spot where both sides of the gun meet. There are many methods of doing this. I just used a saw. Choose you method of cutting, and slice it down the line.
Step 3: Open it up
There are a few screws that you need remove. Take out all of the screws to the right of the line you cut. Once the screws are removed, you can just take of the top part. It should be fairly straight forward if you did the previous step correctly.