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View Poll Results: Have you let the magic smoke out?
Yes 8 24.24%
No 18 54.55%
We've come close 3 9.09%
What's a robot controller? 4 12.12%
Voters: 33. You may not vote on this poll

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Unread 11-02-2004, 02:34
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Re: Anybody let the magic smoke out?

We were doing speed tests this year, and hit the e-stop button before the robot hit anything. However, this caused the robot to do a front flip, and it landed upsides down after doing a front flip. We bent a couple bins on the RC. However (and thank goodness) we did not destoy it.
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Unread 11-02-2004, 06:34
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Re: Anybody let the magic smoke out?

Yeah, earlier this year we burned up one of last year's extra 884's on our wooden prototype. Since the muffin fan on top kept spinning (and the log cabin we work in is quite drafty) the cloud of smoke had a wonderful shape to it. When we took off the fan to assess the damage, we found that three of the MOSFETs had huge cracks in them and several of the others were melted and mis-shapen.
It was not a good day for smoke, because a few minutes later the magic smoke escaped from our Dremel as well (but it was running low on noise already, the smoke was released in an attempt to get some noise and force back inside its motor).
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Unread 11-02-2004, 12:57
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Re: Anybody let the magic smoke out?

I think we fried the Analog Inputs on a controler for GeroniMOE last year. We hooked up hall-effect transistors (magnet actived transitors) with pull up resistors to sense embedded magnets in drive train sprockets. Our hope was to get a good readout of wheel revolutions but we noticed that those transistors and the gyro stopped working. The rest of the controller still worked so we put it on the practice bot (Sitting Bull) which didnt need a gyro.
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Unread 11-02-2004, 17:56
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Re: Anybody let the magic smoke out?

Quote:
We messed up the RC pretty bad last year. Were were testing out the robot on tether and only had one half of the ramp up. Drove it up to the top of the ramp, then it accidentally launched itself off the cliff on the other side, tearing the tether port off the RC cause the cable wasn't long enough.
We did the same thing with the RS port. Fortunately we fixed it.
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