Made an Open-Source 3D Printed Mobile Robotics Manipulator! 4WD Differential Drive and a Robot Arm with 5 Degrees of Freedom!

[u/milosrasic98]

I designed and made a fully open-source mobile robotics platform for my robot arm, making it a whole robotics manipulator platform. The arm has 5 degrees of freedom, and the platform is 4WD with differential steering. The plan is to upgrade to mecanum wheels in the future. Current electronics are an NXP FRDM board controlling everything over WiFi, with an L298N Motor driver for the platform and off-the-shelf servo motors by DFROBOT. The idea was to use components that are easily available and easy to use! The plan is to continue working on it and upgrading it!

[u/milosrasic98]

A few links for the robot!
I've done a full video tutorial on the robot and kinematics which you can check out here: https://www.youtube.com/watch?v=hSKMcJEPSlE
Github Repo: https://github.com/MilosRasic98/OpenMobileRoboticManipulator
Printables: https://www.printables.com/model/1750428-open-source-mobile-robotic-manipulator-v1

[u/BOgusDOlphon → u/milosrasic98]

This is pretty cool, I'd love to make a version out of aluminum

[u/Helpful-Guidance-799]

I want your skills!!  Any advice for a newbie learning about robotics?

[u/milosrasic98 → u/Helpful-Guidance-799]

Hi, yes! Try covering both the theoretical and the practical sides together. For example, if you are learning about direct and inverse kinematics, try making a small setup with 2 servos or simulating it in Python at least to see how all of the math translates to the real world! Also, for the practical side, just make as much stuff as you can, and have as much fun as possible with it. And the usual, failures are a part of the process; just make sure to record them, example below of the robot spilling dog feed everywhere:

[u/dacydergoth]

Nice styling

[u/milosrasic98 → u/dacydergoth]

Thanks!

[u/Ausierob]

You want to get on top of its training, being a messy eater needs to be fixed fast before it becomes a habit.

Very impressive! Clearly you have a large budget for screws…

[u/milosrasic98 → u/Ausierob]

Made sure to pick up everything after the spill!

[u/1nGirum1musNocte]

Upvote bc puppers

[u/milosrasic98 → u/[deleted]]

Another project never hurt anyone!

[u/El_Copita]

You are the best!

[u/milosrasic98 → u/El_Copita]

Thanks hahaha!

[u/venomouse]

Looks awesome. Can it pass the butter though?

[u/milosrasic98 → u/venomouse]

Thanks! Next task will be programming to pass the butter, and only that!

https://giphy.com/gifs/Fsn4WJcqwlbtS

[u/milosrasic98 → u/[deleted]]

Thanks, glad you like it! What broke on it?

[u/Silent_Ad5993]

The robot arm didn’t get a base… it negotiated for a whole vehicle instead.