Subject:
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VOLTAGE AND CURRENT
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 8 Sep 1999 20:23:10 GMT
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Original-From:
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Paul DaCosta <germano@voicenet.com/IHateSpam/>
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Viewed:
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909 times
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SIMPLE QUESTION TO ANYBODY:
I'M PLANNING ON INTERFACING THE HANDY BOARD WITH AN R/C CAR. NOW THE
MOTORS OF THE R/C CAR DRAW 1 AMP CONTINUOUSLY, AND A PEAK CURRENT OF 3.5
AMPS. THE R/C CAR USES A 9.6 VOLT BATTERY.
NOW , ACCORDING TO HANDYBOARD SPECIFICATIONS, IT ALSO HAS A 9.6 VOLT
INTERNAL BATTERY, AND MOTOR DRIVERS DON'T EXCEED 1 AMP, RIGHT?
SO I REALLY DON'T HAVE TO GET ANY H BRIDGES, DO I?
NOW, WOULD IT BE ON THE SAFE SIDE TO USE THEM?
WOULDN'T BE BETTER ANYWAY IF I HAD A SEPERATE POWER SOURCE FOR THE
MOTORS SO IT WOULDN'T DRAIN THE HANDYBOARD'S BATTERY?
THIS IS A SIMPLE QUESTION, I JUST WANNA BE ON THE SAFE SIDE
PAUL DACOSTA
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Message has 3 Replies:
 | | Re: VOLTAGE AND CURRENT
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| First of all - get rid of the CAPS LOCK!!! Second of all, if your RC Car draws a Max Current of 3.5 Amps then you'll blow the motor drivers on the handyboard since they're only spec'd to provide 1 A. If the RC car starts asking for more current then (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
| | | Re: VOLTAGE AND CURRENT
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| the car will almost undoubtedly fry the motor driver on the HB, and having it on the same power will probably generate enough noise to occasionally reset the HB. best bet would be to have the car use its own power and h-bridges, with the control (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
| | | RE: VOLTAGE AND CURRENT
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| Greetings, My buddies and I encountered a similar problem with the motor drivers. The actual specs on a single "Stock" motor driver is .5A . We needed a a driver to handle at least 1A, so we got the TI motor drivers. We found that stacking 2 TI (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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