How to build industrial open source motion control for a robotic arm - part 1
When industrial automation begins to incorporate open source hardware solutions, like those provided by Industrial Shields, a new range of possibilities opens up. RS Components, together with Industrial Shields, wanted to demonstrate the advantages of open source hardware combined with the reliability of industrial standards.
Naturally, the field of robotics seemed like the perfect way to showcase what open source hardware can do, opening also to smaller companies the doors of robotics which has been so far accessible only from the larger ones.
The project followed four steps:
- The idea: to develop an open source motion control system suitable to be applied to a robotic arm.
- The real test: to bring the robotic arm in a real industrial environment to test the motion control system. (Part 2)
- The industrial integration: to transfer the motion control system to a real industrial robotic arm.
- The next step: to move forward dressing the robotic arm with sensors and smart tools for further applications and developments.
For the first part of the project, we involved the Italian maker and tech guru Massimo Temporelli to help create an exciting robotics project using the world’s first Arduino-based open source industrial controller, the Industrial Shields PLC, as the driving hardware.
Massimo Temporelli is President and Founder of The Fablab, a shared digital fabrication workshop and a central hub for maker culture in Italy. For 20 years he has worked at the intersection of science, technology, and innovation, bringing his expertise to universities, top museums, publications, and on television, radio, and the web. His latest book, Innovatori!, explores the mindsets and perspectives of the world’s biggest innovators.
For this project Massimo was tasked with building a robotic arm capable of being used in sophisticated industrial automation applications. The complexity of a robotic arm with several components which have to be logically controlled to obtain smooth and precise movements was exactly the kind of challenge we were looking for to demonstrate the Industrial Shields PLC capabilities.
Thanks to open source hardware solutions like the Industrial Shields PLC and support from the maker community, it’s easier than ever to build an industrial robotic arm. We started with an open source design from Ruc Fablab in the Netherlands, who provides all of the mechanical designs and Arduino code needed for the project. In the spirit of working out of a fablab we naturally wanted to make some slight modifications to the original design from Ruc.
All the modified designs together with the customised Arduino code and ready to be 3D printed STL files for this cool project are available for free download at the the end of this article!
The controller powering the robot will be the open source Industrial Shields M-Duino PLC.
When choosing the building materials for the robot, we thought it would be interesting to use a natural material like wood to provide a fun contrast with the technical nature of the project, making the robot appear bit more friendly.
Once we have selected our building material, it’s time to go to the laser cutter to cut it into the shapes we need. In just a few minutes, the laser cutter cuts out all of the mechanical parts needed for the robotic arm.
Thanks to the clever design, putting together all of the individual laser cut pieces is remarkably quick and simple. In just 25 minutes Massimo was able to build the entire robotic arm.
Once the laser cut pieces are all assembled, it’s time to insert the electronics components needed to power and drive the arm, including stepper motors and drivers, then of course the Industrial Shields PLC for piloting the robot.
Here are the individual components needed:
- 3 Sanyo Denki Bipolar stepper motors, one for each axis (RS Stock No 829-3525) (Outside EU and APAC click HERE)
- 3 Geckodrive stepper motor drivers (RS Stock No 793-4127) (Outside EU and APAC click HERE)
- 2 3D-printed clamps (download files below)
- 2 Parallax Inc servo motors (RS StockNo: 790-5220) (Outside EU and APAC click HERE)
- 1 Siemens SITOP DIN rail power supply (RS Stock No 776-7729) (Outside EU and APAC click HERE)
- 1 Industrial Shields M-DUINO PLC (RS Stock No 885-0926) (Outside EU and APAC click HERE)
- 1 Reel white automotive wire 0.5mm2 (RS Stock No 369-4800) (Outside EU and APAC click HERE)
- 1 Reel black automotive wire 0.5mm2 (RS Stock No 369-4771) (Outside EU and APAC click HERE)
- 1 Reel red automotive wire 0.5mm2 (RS Stock No 369-4787) (Outside EU and APAC click HERE)
- 1 Reel green automotive wire 0.5mm2 (RS Stock No 369-4793) (Outside EU and APAC click HERE)
3D models of all 3D printed parts are available for FREE download at the end of this article
After all of the electronic components are installed and wired, the next step is to transfer the instructions from the computer to the robot using a normal connection cable. Now the robot is all assembled and ready to work!
Of course, the real test of the project will be using the robotic arm in an industrial setting. For this second part of the project Massimo Temporelli will take the assembled robot to the RS Components warehouse in Milan to demonstrate its capabilities for real-world industrial applications.
CLICK HERE for the next episode!
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Really cool . But not every one own a laser-cutter. It's much more expensive than a 3D printer.
@wei1224hf There are maker spaces opening all over the world, many have laser cutters that you can use along with many other machines that are just not practical to own. In the UK there are FabLabs and Eagle Labs but I bet there are many others
thank you very much for your note. I didn't seen the attachments were no more threre.
Probably something went wrong with our new portal.
The files for lasercutting, 3D printing and programming are now back and they are available for download.
Regarding the webpage you can briefly see in the video, is a page from the Ruc Fablab from where we picked up the original project.
The link is in the article.
> Do the component links actually work for anyone? Any time I click on one it takes
> me to a region selection page and when I select USA it dumps me on the home page
> of Allied Electronics. So, sure I can search by the number in the link text, but
> what is the point of the links if they can't maintain a search query through a region
unfortunately there is not yet fully alignment between RS and Allied websites, that's why you are led to the home page.
Apologies for this.
However there is an alternative solutions, the international RS website: http://export.rsdelivers.com/
You can go directly or clicking on "Other Countries..." and put there the RS stock numbers.
Hope this can helps you.
Do the component links actually work for anyone? Any time I click on one it takes me to a region selection page and when I select USA it dumps me on the home page of Allied Electronics. So, sure I can search by the number in the link text, but what is the point of the links if they can't maintain a search query through a region selection?
thanks for your note. CAD Files are now available for download.
Regarding the robot shape, you are right. This is a very common structure for pallettizing robotic arms thanks to the easy set of joints which keep the gripper always parallel to the ground.
Easy to build and effective. This has allowed us to focus more on the motion control system.
Do you have the CAD files for the actual arm itself please? (e.g., the laser cutting templates)
Side note: This looks almost exactly like a scaled up version of the uFactory uArm.
No idea who came up with the design first, but apparently that one was based on a pallet robot.