Not a problem.
So this is for a nerf baster. In this blaster I could be using any of the following motors: Motor List
The most common motors will be MTB Rhino, MTB Honey Badger, FoamBlast Meishel 2.0, FoamBlast Fang, MTB Hellcat, and MTB Wolverine. If I am reading the list correct the biggest beast will be the Wolverine at 46.80 (you should not be using 3s lipo on the Wolverine).
They will be powered with either a 2s lipo or a 3s lipo. I will be power the Arduino with the lipo as well, but will be using a buck converter to reduce the lipo power to 9v.
In the application that I was using I could not find a Lipo icon. So I put the battery in there instead. I later found a power supply icon and thought that was a better icon.
The two motors that are together will be the ones that will be pushing out the darts. These motors will be running before a dart is pushed and can be running after a dart is push. There is a chance that a dart can get jammed between the motors. At that time a person SHOULD (keyword) release the button the run the motor pair.
The single motor will act as a pusher for the darts. So this motor pretty much is a quick 1-22 rotation.
With the 3 motors, I want to have the motor brake so that it stops right when you release the buttons. The motor that needs the braking the most is the pusher. This is due to me coding how many rotations that I want to do and I need it to stop right away instead of slowing down.
This is how it is going to be in the end. For testing purposes I am doing this in a breadboard, due to it being easy to move things around. I will also be trying this out with 4 AA batteries before trying it with a LIPO (batteries are a little more forgiving). I will also be powering the Arduino with USB when testing.
I thought that I wrote all this in the first post, but I guess like I did not write enough. I hope that this is more helpful.
Go figure, I yell at my users for not telling me what they are planning to do and now I did it to everyone here.