hi, I’m completely new to robotics, so please forgive me for my ignorance.
I want to build something like this in the picture. Basically, I’d like to have an arm A move linearly along a beam. I want to be able to control its speed, and program different travel distances. The maximum travel distance is about 7 inches. I need to use AC power for this tool. Please give me some ideas what components I will need. I hope I can learn by building something.