Posts Tagged ‘fix’

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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HOW DO YOU FIX A SERVO WITH STRIPPED GEARS?

Question:

How do you fix a wrist rotate servo with stripped gears? It’s a pain in the butt as well as costly to replace.

Answer:

See the steps below for an inexpensive and simple solution! Note that te metal gears cost almost as much as the servo; it takes 5-10 minutes to change the gears, and a lot longer to change the whole servo! You choose.
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Download the pdf version with all the live links HERE.
 
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SAT Fix on Student Computers

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IT WORKS! (MOST OF THE TIME…)

All right…. came in to school early before an all day meeting beccause I just had to try the .sat fix from the previous post as a student.

Good news or bad first?!?

Our school has two “fake” student accounts for us to test programs with, ect. I do not know the difference between the two accounts, b ut I tried them both.

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First one didn’t work out so well.  I couldn’t even open EdgeCAM!  It worked September 7th, because I tested it. Somebody must’ve done something between now and then, I swear! This is the error I got.

Now for the good news? On the other account, other than the toolstore error, (which worked in September… I swear….) and it took ten minutes, I am not overexaggerating, for EdgeCAM to load and another 3-5 minutes for the part to load. I hope this is just a “first time” loading issue.

With those issues aside, the .sat finally loaded, I was able to apply toolpaths, and verify the part in simulation.

UPDATE! 7:45 12/8/2011 Just tried it with a real live student, with a real live student account, on a real live student computer, and it works!

Please try this in your classroom, on your computers, and let us know if it works!  Good Luck!
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Jim Hanson

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