 | | 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 (28 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 (...) (28 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 (...) (28 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 (...) (28 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? (28 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 (...) (28 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? (28 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 (...) (28 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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| | Re:
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(...) yup, it was too short! (...) Phil, couple of questions for clarity. Does it need to go up and down the steps or just up? does it carry stuff? Why is step climbing needed? It might be easier to make a wall climbing bot...or a bot that can leap (...) (28 years ago, 11-Apr-97, to lugnet.robotics.handyboard)
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