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Max The Magnificent
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Re: Shaft encoder
Max The Magnificent   10/26/2013 5:38:32 PM
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@Crusty: Happy days are here again.

Every day is a happy day when (a) I'm in it and (b) we're all learning something new and interesting :-)

Max The Magnificent
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Re: Shaft encoder
Max The Magnificent   10/26/2013 5:36:43 PM
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@Crusty: So why the shaft encoder? It will not give any more information about wheel slip versus distance, or does it? and you are still going to have to count the pulses in the Arduino code.

First of all there would be three shaft encoders -- one per wheel. Depending on your motor, you can mount them on the back-end of the shaft (before the gearing) or on the output/drive shaft (after the gearing).

The main reason for having them is to provide another way to measure what the robot is actually doing compared to what it thinks it's doing. Also, there's the point that we have the three motrs, so the way they are mounted means that even if we are going "forward" (say an axis from the center directly betwen two of the wheels -- see my previous blog on this topic), a complete rotation of the wheel doesn't actually equate to the robot travelling the same distance as the circumpherance of the wheel.

Don't worry about my Arduino spending all of its time counting pulses from the encoders -- it won't be spending any time doing this -- based on Duane's current "Secret Squirrel" project, all of the boring counting stuff will be off-loaded to distributed sensor processors ... we'll be talking about this more soon...

David Ashton
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Re: What does "Torque: 0.78Kg-cm (rated load)" mean?
David Ashton   10/26/2013 5:35:22 PM
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Now there's a conundrum: how to squeal without offending Susan??

I've heard of stuck pigs being used for this purpose, but we'll probably offend the animal rights lobby....

And tyres (oops...tires) squeal as well when pushed.  But they don't evoke the same sense of excitement.

So I think we're stuck with schoolgirls.  Did you never squeal over your favourite pop idol, Susan?   Even if you didn't, I reckon the fact that Max and Caleb squeal over Keepon gives you plenty of ammunition for having a dig at them in the future :-)

Max The Magnificent
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Re: Motors
Max The Magnificent   10/26/2013 5:29:28 PM
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@Adam: ...that was towards Duane, though I did send you an email yesterday of something that you might be able to use as motor mounts.

I realized that just after I'd sent my original comment -- sorry -- I should take the time to peruse and ponder :-)

Max The Magnificent
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Re: Motors R us
Max The Magnificent   10/26/2013 5:28:00 PM
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@Duane: I've bought a number of motors from Surpluscenter.

Cool Beans -- I'll take a look over there

Aeroengineer
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Re: Motors
Aeroengineer   10/26/2013 5:27:47 PM
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@Max, that was towards Duane, though I did send you an email yesterday of something that you might be able to use as motor mounts.

Max The Magnificent
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Re: What does "Torque: 0.78Kg-cm (rated load)" mean?
Max The Magnificent   10/26/2013 5:26:47 PM
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@Duane: Mostly I'm working on putting in all of the features I accidentally left out of version 1.

My problem is that I tend to over engineer everything -- so I spend a lot of my time TAKING OUT a lot of the features I accidently put into version 1 LOL

Max The Magnificent
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Re: Motors
Max The Magnificent   10/26/2013 5:24:38 PM
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@Adam (a.k.a. Aeroengineer): Oh and did you get my email on how to solve your motor adaptor problem?  I think that it will work for you.  Let me know if you need any help getting that drawn up.  I can help out with that.

Are you talking to me or to Duane (I haven't checked my email yet today)

Max The Magnificent
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Re: mercurial Max
Max The Magnificent   10/26/2013 5:22:43 PM
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@David: I think we all prefer the gruntled and consolate Max to the disgruntled and disconsolate one......

To know me is to love me, whatever my state of gruntlement LOL

Max The Magnificent
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Re: What does "Torque: 0.78Kg-cm (rated load)" mean?
Max The Magnificent   10/26/2013 5:21:04 PM
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@Caleb: Oh also when I met Keepon.

You met Keepon? He never mentioned it to me LOL

I  LOVE that little thing (not sure quite what to call it)

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