Subject:
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Re: Resets
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 23 Mar 1996 19:20:28 GMT
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Original-From:
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raest <RAEST@LYS.VNET.spamlessNET>
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Viewed:
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4161 times
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I have a few suggestions, these are all things that I have seen before to
help reduce noise from motors
I think that the problem might be due to crap getting back to the power
line... thereby causing the DS1233 to say, time to reset...
- try a seperate power supply for the 293 chips, this isolates them from
the power for the
- add another inductor to the power supply for the cpu, there is
currently one there vs 2 on the Mini Board
- you might add some caps across the motor terminals, this can help sock
up some of the noise
- you might also add another large cap to the power line
On Fri, 22 Mar 1996, Fred G. Martin wrote:
> > I traced my reset problem down to the fact that there is a ton of
> > electrical noise in the chip power (+5V). The noise is there only when
> > motors are running. After a minute or so of running the motors, I'll get
> > a runtime error or the board will just hang. These are the same motors
> > that I used to run for hours. Any ideas? TIA (again...:)
>
> I can't say that I have an explanation of why the motors would work at
> first and then cause problems later, but I can say that:
>
> Not all motors work with the Handy Board. In particular, motors that
> want to draw too much current (e.g., more than 1A) will cause
> problems.
>
> If the L293's are getting too hot to touch when running the motors,
> the motors are probably going to be a problem.
>
> -Fred
>
>
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Message has 1 Reply:
 | | Re: Resets
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| If I add a separate motor power to the L293's, can I keep the ground lines common? If not, what pins are motor ground? (I know pins 4,5,12, and 13 are ground) Thanks. -John (...) (31 years ago, 23-Mar-96, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: Resets
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| (...) I can't say that I have an explanation of why the motors would work at first and then cause problems later, but I can say that: Not all motors work with the Handy Board. In particular, motors that want to draw too much current (e.g., more than (...) (31 years ago, 22-Mar-96, to lugnet.robotics.handyboard)
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