Subject:
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Power
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 17 Mar 1998 04:17:16 GMT
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Original-From:
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Richard <rshirk@sfgate&spamless&.com>
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Viewed:
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1442 times
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Hello everyone. I finally got everything cool with the Handyboard I'm
using in terms of the software and loading it and getting all connections
right. The only problem now is that the motors on my little robot pretty
much stop after maybe 45 seconds of operation. The motor lights do what
they are supposed to but they blink. Im assuming this is a battery issue.
Is there any way to boost the power tot he motors so that they will run
for at least half an hour without killing the handyboard? Should I just go
looking for something with smaller motors? The ones im using are just the
standard little ones. If you guys know anything, I'de appreciate that.
Also..I watched Robots Rising on the discovery channel. Cool stuff...
Has any out there doing any thing with analog robotics using only
transistors and the like?
Thanks!
Richard
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Message has 4 Replies:
 | | Re: Power
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| Perhaps the problem is your motor-drivers IC's. If you use the L293D or something, which are standard on the HandyBoard, you can only draw abou 600 mA. I use the other ones mentioned in the HB manual (they're from Texas Intr., but I can't remember (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
| | | Re: Power
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| Perhaps your motors draw too much current. You can only draw 600mA from the L293D driver IC. In the HB manual, you can see you can draw 1A from a IC from TI. (I don't know the exact number right now). You could try to use a seperate IC for each (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
| | | Re: Power
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| I've been having very good luck with designing an entire robotic ecosystem using only analog components! Predators, Herbivores, plants, the works! (...) (27 years ago, 18-Mar-98, to lugnet.robotics.handyboard)
| | | Re: Power
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| Richard wrote:<snip, stuff deleted> (...) Ah, that takes me back a bit. I built one in the late 60's from plans in Practical Electronics, used about 40 transistors and mechano bits. Its collision avoidance sensor was based around an OCP71 photo (...) (27 years ago, 18-Mar-98, to lugnet.robotics.handyboard)
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