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Hi, fellow (ro)Botters! Did anyone watch Scientific American Frontiers on Wednesday? If not, or even if you did see it, check out www.pbs.org . PLEASE SEE IT! there's a lot of good links, a complete transcript, and other goodies. But now, onto my (...) (27 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | Re:
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(...) Now _this_ is a challenge. Presumably you've read the treatment on step climbing robots in Marvin Weinsteins "Android Design" ((URL) is out of print but still in libraries. It takes a _lot_ of energy to move up stairs. Basically you robot has (...) (27 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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I once saw something like this, but it was very complicated to build. There were TWO separate arrangements of your wheel descriptions, and they were hinged from a set of "hips". I believe this is because, as wheel 1 is pivotting over the front edge (...) (27 years ago, 13-Apr-97, to lugnet.robotics.handyboard)
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| | motor routines in lib_hb.c
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Does anyone know why these eight speeds were chosen in lib_hb.c for the motors and what would happen if the code were re-written to allow any speed between 0 and 255? int _speed_table[]= { 0b00000000, /* speed 0 */ 0b00010001, 0b01001001, (...) (27 years ago, 14-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motor routines in lib_hb.c
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(...) Think of them as repeating binary waveforms (they are clocked out the 'enable' pin of the motor chip at 1Khz) so on an oscilloscope speed 2 (third entry) would appear.. time -> 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (in mS) Vmotor : +--+ +--+ (...) (27 years ago, 15-Apr-97, to lugnet.robotics.handyboard)
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| | Re: motor routines in lib_hb.c
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If I'm not mistaken, (someone please corect) those speeds represent the actual shape of the waveform. Let's list some details. 1. Each bit 0 or 1 represents 0V or 9.6V. (or whatever external source) 2. Each bit represents the above voltage for a (...) (27 years ago, 15-Apr-97, to lugnet.robotics.handyboard)
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