 | | RE: You know, I just had a wacky thought...
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It is not completely wacky, but there are issues. For example most audio amplifiers aren't rated for DC operation (that having their output stay at one level permanently) You can fix this by rectifying the output of the amplifier and providing a DC (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Need big favor
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(...) If you need motor control of 6A average and 12A peak, check out Ben Wirz's homepage, he sells a unit using two bridged LM18200's, a great chip. (URL) today is a race between software engineers striving to build bigger and better idiot-proof (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | FTP error
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Is there something wrong with the FTP server. I can't connect to it. (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | Re: HB Downloader Trouble
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Well, I got my HB working. I brought it over to a friends house where he was able to program it using his machine with little trouble. So, obviously it was not the HB per se. I brought it back home, and had trouble downloading from IC 3.1b but was (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | Need big favor
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Could somebody who has the tyco 'Fast Traxx' vehicle please tell me what the numbers are printed on the sides of the long 15 pin black chip and the two green power transistor looking chips? Basically all the chips bolted to the aluminum heat sink. (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | Re: IR wall detection
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(...) Could you tell me the cost & range for these? (...) Could you trigger them in an interleave-like sequence? Seems that would reduce interference to just about zero. If you number 1-2-3 starting at zero degrees and going clockwise, you could set (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | IR wall detection
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I have recenty perfected a simple sensor using the Sharp IR detector but I need some help in interfacing it. I plan on having about 16 sensors all around the perimiter of the robot but I don't want to have them running all at the same time because (...) (28 years ago, 14-Jan-97, to lugnet.robotics.handyboard)
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| | Re: HB Downloader Trouble
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Success on the first bootstrap download and failure to write into RAM could easily be explained by a fault in the memory circuit. The memory circuit, which includes the 'hc373, the 'hc132, and the RAM chip itself, with about 27 signals going to the (...) (28 years ago, 13-Jan-97, to lugnet.robotics.handyboard)
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| | Re: HB Downloader Trouble
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(...) I too have this problem. I originally thought it was the RS232 converted, but I have since replaced this part and still get the downloading error (using HBDL and DLM). I can't find any physical defects with the board (solder bridges, cold (...) (28 years ago, 13-Jan-97, to lugnet.robotics.handyboard)
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| | Address marking on th SCI
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I'd like to address two devices (one a handyboard) over the same serial line. I can use the address mark wake up method described int the pink book. Is this compatable with IC, or do I need to write my interface in assembly? -Jodi Graf (28 years ago, 13-Jan-97, to lugnet.robotics.handyboard)
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