I am Matt and I am new to the forum. I have recently bought a mega2560 and a UNO that I have used on a recent school project and now have the bug to create something at home. I have looked at a lot of the previous dog ball launching designs and have not found any that I am quite in love with just yet. I was thinking about using a pneumatic valve to shoot the tennis ball out versus some type of motor. Has anyone seen this done before? I was thinking about using some old paintball CO2 tanks and putting them to good use.
My goal is to at least 40-50 feet out of the shot and 75+ feet would be exceptional. (My border collie likes to run). Money is not really an object but I would like it to be challenging and fun. This project would be just in my spare time. I am looking to have some fun and expand my knowledge at the same time so I am setting my goals high.
Extending on the project, when I was completed with the launching mechanism I would like to mount it on some large type of RC car as a second phase. I have no experience with programming RC cars at the moment or what a common chassis that is used for arduino projects. My bonus objectives would be to have the car autonomously guide itself or store a route to a spot in the yard and shoot a few tennis balls(give the dog something to do when I am gone). I am not afraid to compromise. I am crossing into a few different disciplines but I have a background in software and am looking into getting some input and ideas from the community. I have a parallax sonar, ls20031 gps, mega, uno, lsm303, sd card shield, and lcd display at my disposal now from my previous project and have experience with these peripherals.
Feel free to shoot down any ideas, add any, and just give general feedback.