Gcode for 2 wheeled differential drive robot

Projects General Guidance
1

Hi everyone.
i want to make a differential robot that will draw any shape on the ground. I have 2 stepper motors and esp32.
Now i want that this robot should work on gcode, just like 2d plotters. I feed gcode and robot draws the shape.
How can i do that?
I went through the marlin firmware, marlin arm firmware and grbl. But these firmware are so complex, and i think they will be very hard to edit as well. Furthermore, i could not see any option of differential drive configuration in them.
Should i write my own gcode interpreter and then add the diff drive functionality in it?

PXL_20230903_092621217

2

Please give some examples of G-code that you will be using. Yes, you will likely need to write an interpreter. What will send your G-code to the robot processor?

3

Hello robofuntastic

Welcome to the worldbest Arduino forum ever.

I think you are not alone with your project idea.

Take a search engine of your choice and ask the WWW for 'robot +plotter' to collect some data to be sorted out to get the needed information.

Have a nice day and enjoy coding in C++.

4

this is the example gcode i found https://github.com/Makeblock-official/XY-Plotter-2.0/blob/master/demo/Makeblock-pencil%20G-code%20examples.cnc
and my robot will have to utilise this kind of gcode for movements

5

Ok, look at the G-code and see what the distance increment is being used for X and for Y movements. That is the goal for your mechanical design. Can you, or have you done that?

6

i have not done that yet. I wanted to get some idea before starting work on it.
Should i write my own gcode interpreter code?

7

Probably will need that to begin testing your design!

8

Hth

" Arduino GCode Interpreter - RepRap

9

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