I am working on a project that involves controlling a 3-axis robot arm (driven by NEMA 17 stepper motors) through an Arduino MEGA and RAMPS 1.4. The RAMPS 1.4 board uses Pololu A4988 motor drivers. I am wondering if anyone has any advice regarding the easiest or best way to program the movement. It…

I am currently doing exactly what you are asking about. My robot arm is a dobot clone. I am using ramps 1.4, Arduino mega and A4998 drivers. You need to decide what your goals are in terms of controlling the robot. If you run Marlin, it greatly simplifies the use of G code for control. However, wi…

Thanks, that makes sense! And unfortunately means this is going to be a lot trickier than I had anticipated! I'll look into what you've already done and try to get caught up, but I am definitely interested in learning more specifics of what you've tried and what you've accomplished.

How is the arm configured? Can you post a link to an image of something similar? Is it like a paletizing robot arm, where the wrist stays horizontal? Does it have a motor at each joint? Or two motors at the shoulder, and a linkage to the next joint? What sort of tasks will you want the arm to do? D…

It has two motors at the shoulder and linkages to the joints, and the wrist joint stays horizontal. It's a fairly simple design as seen here . I'd like the arm to clamp an object and then move it back and forth (in one plane) along a sanding/polishing wheel. I was wondering about G code simply as a …

Because it has two motors at the shoulder (I will call those motor 2 and 3) and linkages to the joints, when you move the first (lower) linkage, it affects the second linkage unless you make motor #3 follow motor #2 to neutralize that effect. No big deal, just something to keep in mind when writing …

Northof49: If you want to use my code, it already accounts for both of the above problems, the movement using G1 is all processed through Bresenham's algorithm to make it move in a straight line, but the inverse kinematics in my code are for an arm with the dimensions of my arm, and the inverse ki…

The AR2 robot arm uses a python or PC based software to create the GUI on your PC, and an Arduino program on the mega to receive the instructions and control the arm. It does all the inverse kinematics on your pc. I modified the Arduino program he wrote so that it would work with ramps and have post…

So did anyone get any further with this? im trying to make a robot arm but i want a controller to control it and i have already got stepper motors and a ramps1.4 etc... just need help on the code side

Controlling 3-axis robot arm with RAMPS 1.4 and Arduino Mega

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ribbonman April 7, 2020, 3:07pm 10

Just commenting to find post later.
Very interesting and hope to start my own project soon.

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Controlling 3-axis robot arm with RAMPS 1.4 and Arduino Mega

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