for the technical marking of the wall
of the room, to drilling wall later that is, and based on the coordinates I enter by
programming, which for example corresponds to technical draft.
So as not to using the tiring classic length measurers.
Based on what I learned from those 10 lessons, for that I would certainly need:
Microcontroller, Motor controller, 4 actuators, padded wheels and rods welded to the motors
including the handle for the pen.
That sounds like an interesting project but a bit tricky, do you have experience building robots?
If I understood correctly what you are trying to build is a robotic arm with wheels that draws on a wall according to the coordinates you give to it. You seem to have a couple of things figured out but need some help with the sensors, right? I think you will need a distance sensor, either ultrasonic or infrared, to check how far from the wall the arm is, maybe a force sensor to check if the marker is pressing the wall.
Also, are the wheels really necessary? I think that will complicate the project and since you are already planning on using many joints and the arm doesn’t have to hold a lot of weight why not make it big enough so it can reach the distances you need? Maybe the distances are too long and you definitely need them, I only make the suggestion because controlling the movement of the arm with wheels is going to be quite complicated especially if you need precision in your project.
Finally, I found these tutorials that might help you a little:
And you can also check the Robots section for some inspiration
