 | | Re: Polaroid Sonar
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Greetings, Acroname has them on their parts list, though I am not certain if they have them in stock (www.acroname.com). Marco A. A. de Oliveira assfalk@eece.unm.edu /---...---| /---...---/ CNPq Scholarship Awardee | | Research Asst. | | | ACE SMR (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | handyboard clock speed
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Ive checked the mailing list archives and i cant find a simple answer to the following question: Is it possible to run the HB at >2Mhz? That is, can I run a different version of the 6811 perhaps and get 8Mhz? What are the advantages/disadvantages? (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Mobile Robot Question
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(...) Can anyone answer all that? I think the answer is "it depends". Unfortunately it depends on so many variables that you'll just have to implement one system at a time, checking each thoroughly and modifying as you go. Make sure to go back and (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid Sonar
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(...) The Mondotronics Robot Store was selling them, but the price wasn't great. Instead of about $50 per transducer/board combo, they were selling pairs for $150 last time I checked. -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Choosing Parts?
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(...) I don't mean to be harsh, but this isn't exactly correct. The voltage is the highest the capicitor is rated for. if you have a 12V circuit it won't hurt to put in a 200V cap, but you'll need lots of room. Generally for safty, in high current (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Choosing Parts?
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In a message dated 4/21/99 1:08:33 AM Central Daylight Time, josr0633@cetus.zrz.TU-Berlin.DE writes: jos runarko: (...) For electrolytic capacitors, you want the printed voltage to be the closest voltage above the voltage you are operating at. The (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Choosing Parts?
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Hi, in Katalogs, there are many capacitors with the same capacity value but different voltage and tolerance. My question is, which voltage should I choose: above the operating voltage of 12 V? Second, the tolerance the lower the value it has a (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: help on replacement part
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yes. fred (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | Mobile Robot Question
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Hi, I'm building a mobile robot using an R/C car with an Electronic Speed Controller (ESC) as the mobile platform, the Handyboard for sensorial data aquisition, and servo control; and a Linux "box" for GPS, videoconferencing, wireless (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | help on replacement part
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Can anyone please tell me if a 50 v replacement for part C7 and C9 will be ok instead of the normal 63v one? -Jon Schuck (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | Polaroid Sonar
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Anyone know where to get a Polaroid Sonar besides Wirz elevtronics and Polaroid Corp? They are both out of the product. Thanks for any input. ---...--- ericson mar Robotics Consultant mar@cooper.edu (212)353-4356 Department of Mechanical Engineering (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid 6500
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Scott Sherman, My name is Fabian Lopez and I am to begin hooking up a polaroid sonar transducer to my handyboard.....any words of wisdom. Hola from New Mexico (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | Spurious IR signal
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Dear IR users, I recently have begun experimenting with IR sensing for my HB by using an IR led and a 3 pin detector (Everlight IRM8100-3-M available from Radio Shack, cat no 276-137a). The LED is driven by a 38 KHz square wave (50/50 duty cycle). (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | GP2D12
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Looking for this part. Does anyone know where to get it? ---...--- ericson mar Robotics Consultant mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art ---...--- (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC/HC11 small patch
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Patch 1.2 to the GCC/HC11 compiler is now available on my FTP site: ftp.eskimo.com/u/a/a...est.tar.gz This new patch includes the patches by Otto Lind, Dr. Steven Barnicki, Keith Hearn, and myself. It is patch 1.2. Also, I put the latest snapshot of (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | pcode_hb.asm
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Does anyone know where the latest pcode_hb.asm file can be found? Also, does one use as11 to assemble this thing, and are there include files that have to go with it, etc? I assume that dlm can be used to download the resulting .s19 file, am I wrong (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | Help on selecting MOSFET
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Can someone give me the name of a P-channel depletion mode MOSFET that can handle like 6+ Amps. Thanks for any leads at all. :) ---...--- ericson mar Robotics Consultant mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard sudden turn off`
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Phillip, This happened to me once, and it was because I had an electrolytic capacitor installed backwards. You obviously have something drawing a lot of current, so if you check the caps and everything looks ok, it is somewhere else. Lacking any (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Vector Compass problem
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(...) I have seen that too. maybe have you main call comp_disable, do some stuff, and call comp_init. It may fix the problem. The compass should reset properly on it's own, but doesn't always. (...) Check you environment with a regular old compass, (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | Vector Compass problem
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hi, i am currently trying to interface the vector 2x compass with the handyboard given the info and code provided on the handyboard web page. i am having 2 problems with it. 1) occasionally the compass doesn't produce a clock signal until i reset it (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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