Posts Tagged ‘vex’

The VEX Switch Doesn’t Work Anymore as an Input…. How do I fix it?

Question:

I used the Dobots last year to do activity 4 Using Digital Inputs (Here) and it worked great!  The kids are having a blast!  But no matter what I do this year, I cannot get it to work on any of my robots. How do I fix this?

Answer:

  Well….. My bad…. I’ve been telling y’all (for you Texans out there) to be sure your wiring it correctly, and be sure it’s plugged in the correct port…. but that doesn’t seem to be the problem. The problem is a bug in the latest version of the 1.7.1 software. I am told that the bug will be addressed in the next release of the software, but no one knows when that will be released. So the safest answer right now… I know it is hard for some schools to do, but to revert to version 1.5.1 of the software. I will let you know as soon as I hear that the new version is out! This only seems to be a problem if you are using Teaching and Playback…. It works fine in Blockly… 

To do this, follow the steps below:
1. Go to the Dobot Download Center here: https://www.dobot.cc/downloadcenter.html  2. Click on the link circled in red below that says previous versions.

3. In the resulting window choose version _Magician Studio v1.5.1
4. Delete the new version from your computer and reinstall this older version… until the new version with the bug fix comes out. Sorry for the hassle! In my classroom I am lucky enough to have the older version installed so I did not have this issue.

5. I strongly suggest that you do NOT install updates mid year!

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Pneumatic Parts Feeder

Question:

Do you have any ideas for ways to teach students about parts feeders in industry?

Answer:

Imagine a project that incorporates VEX pneumatics, 3D printing, CAD design, and Robotics all in one! That’s exactly what we did here. I taxed one of my students with this “Going Beyond” activity: Design a pneumatic parts feeder using what you have learned in CIM class so far, and here is what he came up with!

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Caz Students Present to SMEEF in Michigan

  Riley Lordon & Savannah Johnson, juniors at Cazenovia HS took what they learned in Computer Integrated Manufacturing (CIM) class last year and brought it to life in Michigan this week. They presented “Industrial Robots in the Classroom” at the SME Headquarters in Southfield Michigan to many members of the SME Education Foundation as well as their sponsors.

They built a robotic workcell which simulated a grinding operation that included an electric turntable parts feeder that they made, a grinder made out of VEX components, and a Dobot Magician robot. It was a closed loop system that used inputs and outputs with the Dobot to complete the task and then palletize the final product.  

For activities to use in your classroom for the Dobot Magician click HERE.  

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Dipping with the Dobot Magician

Pick and place and moving things around are staples of industrial robots.  Another reason to use robots in industry and automation is because of danger to humans. Robots can work in environments that are adverse to humans; especially toxic and/or adverse environments.

Sometimes the best way to pick up an object is with a suction cup or vacuum gripper.  This works especially well with very small objects as well as large, and provides a cheaper alternative to a mechanical gripper.

In this activity, you will perform a chemical dipping operation with a robot arm using the air pump kit and a vacuum gripper.
  • Go home
  • Pick up the cylinder from the pallet
  • Dip it in Tank 1 for 2 seconds
  • Move the object and dip it in Tank 2 for 2 seconds
  • Move the object and dip it in Tank 3 for 2 seconds
  • Move the part back to the pallet.
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