 | | 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: NOTE 04/10/97 10:50:15
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OK, I haven't looked at encoders.asm but if the following doesn't help just send more questions. (...) Sounds about right. (...) TCTL2 sets rising, falling, or both edge modes; TMSK1 arms interupts; IC event sets the TFLG1 register. (...) correct (...) (27 years ago, 14-Apr-97, to lugnet.robotics.handyboard)
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| | QFP sockets
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Hi, Thanks for the response on finding a microcontroller. I have 1 little problem left: if I'm going to use a Motorola 68F333 or the somewhat cheaper 68HC916Y1 I need a conververter from 160-lead QFP (.65 pitch) to an "normal" pinout where I can (...) (27 years ago, 14-Apr-97, to lugnet.robotics.handyboard)
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| | RE: HB books
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Mark Robillard has written 2 good books on robotics. No one has mentioned these books here before, so I though I would list them. Here are the 2 book titles : * Microprocessor controlled robotics * Advanced microprocessor controlled robotics These (...) (27 years ago, 14-Apr-97, to lugnet.robotics.handyboard)
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| | Re: sencdr0.asm
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Yes, but why? Is the contents at ADCTL+X supposed to change? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of (...) (27 years ago, 13-Apr-97, to lugnet.robotics.handyboard)
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| | Fried analog port
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I was taking some measurements of sensors by reading the value on the LCD display. Suddenly poof a burst of smoke came from the analog port (0). Now the only reading I have on that port is 1, but the other ports are fine. Could I have somehow fried (...) (27 years ago, 13-Apr-97, to lugnet.robotics.handyboard)
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| | My Robot, "JERK"
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To those interested: For those who are interested, I have posted pictures of robot at URL = (URL) it isn't totally complete, the construction is, for the most part finished. It is mobile and can almost traverse the maze it was designed for. Thanks (...) (27 years ago, 13-Apr-97, to lugnet.robotics.handyboard)
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| | HB Simple Encoder Routines
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Hey everyone, My partner and I are trying to use the sencdr?.icb and fencdr?.icb routines to keep position measurements of a robotic arm. The encoders are break beam and provide a signal of 4kHz max. We used 4 J-K flip flops to reduce this frequency (...) (27 years ago, 13-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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| | Re: pressure sensors... antistatic foam -Reply
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(...) That's exactly the stuff. I saw a demo of this in class, so I can't give you specifics, but it's the sort of experiment that takes about 6 minutes to try on your own. Note, however, that there are a few different kinds of the foam: i mean the (...) (27 years ago, 12-Apr-97, to lugnet.robotics.handyboard)
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| | sencdr0.asm
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In the program sencdr0.asm, what does the line: BRCLR ADCTL,X $80 * for? Thanks for any help. :) ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The (...) (27 years ago, 12-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Parts substitution
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(...) In this case, no problem. The computation of power is simple... Watts = Volts X Amps and ohms law is... Volts = Resistance X Amps Using the traditional I = current (they say it comes from the French word for Intensity) R = Resistance E = (...) (27 years ago, 12-Apr-97, to lugnet.robotics.handyboard)
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| | HB books
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Hello, Does anyone know what books are avaible about building robots with the HB as microcontroller? Thanks Emiel Agema (27 years ago, 12-Apr-97, to lugnet.robotics.handyboard)
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| | Re: HB files
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Postscript files are generally for printing out. Therefore, you send a postscript file to a "postscript printer". Most HP Laser Jets are. Otherwise, you can use a program called GhostView. It's a viewer that has postscript capabilities. I think it's (...) (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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| | HB files
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Help! I can't open any of the files at the cherupkha site. I presume these are "postscript" files. I've tried various apps to view them without success. I'm workin in a PC enviroment, no MACS or unix. I keep readin about the great libraires out (...) (27 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | Re: BotS on TV
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As usual, this mundane matter of workin for a living has interfered yet again with the more pleasant pursuit of robotics (read: missed the show). Was this a PBS show? I would love to have seen this. Does anyone know when this might be shown again? (27 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | Re: pressure sensors... non-conductive foam
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Max> Do you think it would also be viable to use a soft Max> NON-conductive foam and then measure the capacitance instead of Max> the resistance to work accurately with lighter pressures? Actually this will work better. I built a grid sensor using (...) (27 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | Re: pressure sensors... non-conductive foam
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(...) What a neat idea! Sounds nice and compact and simple to build too. Do you think it would also be viable to use a soft NON-conductive foam and then measure the capacitance instead of the resistance to work accurately with lighter pressures? (27 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | (no subject)
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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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