To plot any curve or a function on a paper we need points of that curve, so to draw a curve, I will store a set of points in the processor and use motors, markers and other mechanism to draw straight lines attaching these points and these points are so close to each other that the resultant will look an actual curve.
So I am going to draw the curve with a marker or a pen.
- Yes to do this project I need motors which would change the position of a marker but which one?
With my knowledge stepper motor and servo motors are appropriate but not sure whether they are appropriate since I have never used them, so will they work?
The dimension of paper on which I will be working on is 30x30 cms.
I have two ideas for this machine
I would make my marker holder movable with help of rack and pinion mechanism but I am not sure that this would be precise and I may have to alter to some other mechanism and if you know such then that can really help me.
Here I would roll a paper on this cylinder and this paper will get unrolled as the cylinder rotates and even the marker holder is movable but only in X direction and the rolling of paper is nothing but change of Y position.
Which one of the above two methods is good?
I know about microcontrollers and I want to control the motors using them so I decided to go with Atmega 16 microcontroller. But here i might need microstepping of signals how would I be able to do that with microcontrollers?
If you know the answer to atleast one of the questions then those answers are always welcomed. If you need any clarifications about these then please leave a comment.
Thankyou for your time.
Your sincerely, Jasser
Edit : To draw lines of particular slope I would have to know the slope between two points and the depending on the slope I would rotate motors with particular speed so that marker will move in a straight fashion with that slope.