 | | Motor Drivers
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I am trying to run a light with the motor outputs on the handy board. I looked up the spec on the L293D and it claims to be capable of 600mA constant and 1.2A peak. The miniature light I am using draws about 300mA. When the light comes on the handy (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Re: sonar mapping with evidence grid
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(...) home (...) I have read that it is not actually a solid cone angle, but a peak central lobe and a few side lobes. I think the best way to figure this out is to mount your sonar sensor on a rotatable head and go out to an open field. Place a (...) (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | Re: LED's
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[Derek Healy] spake unto the ether: (...) This is just an idea skeleton, but not too hard to flesh out, if you've worked with TTL. The Handy Board memory map maps some upper 32K addresses to I/O "ports". Look at the schematic and you can see which (...) (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | LED's
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Hi, could anyone tell me how I might light LED's in sequence so that they would simulate a rev counter of an automobile & to also simulate the speed counter. I need to know how I might wire them up and how I might be able to program them using time (...) (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | Losing HB memeory
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Hi all, i am having some trouble with the HB memory. i have some calioberated values stored as persistent globals. after running the program few times the HB tends to lose the stored values. What could be the problem? Many thanks Fazal (24 years ago, 5-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Diodes for Sonar Assembly
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yes, this is fine. the 5404s have a higher voltage rating, so they're "better". the 5401's are specified because they'd be cheaper and are already more than adequate. fred In your message you said: (...) I (...) e (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Diodes for Sonar Assembly
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On the official plans on the HB web site, it says to connect 6 1N5401 diodes for a voltage drop. Can I use 1N5404s instead? We got our sonar module the other day and are itching to try it out. After visiting various Radio Shacks I couldn't find the (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: IR decode disabling
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I came across the same line in the lib_hb.c-file, hoping to achieve more performance but as I was told by Fred Martin, the default setting is OFF. Dirk (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: sharp gp2d12 infrared ranging sensors (fwd)
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A little known fact is that this does NOT work on inputs 3, or 6. Cutting the leads on 1,2,4, or 5 works just fine. If you cut the traces on 3, or 6, simply put a solder bridge across the signal and 5V leads to put things back to normal. If you run (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Gleason Research
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Dear Joe Kopena: We are here and are sorry you have found any difficulty in getting a prompt response. We have no record of having received email from you yourself. We have recently faxed a quote to another party at Drexel. Perhaps your email was (...) (24 years ago, 4-Apr-00, to lugnet.robotics.handyboard)
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