 | | 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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| | SMT & PTH Assembly equipment - buy or sell
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Hello, If this message has inadvertently reached the wrong individual in your organization, please forward it to your manufacturing manager. My name is Lee Anderson and I represent Manufacturing Automation, Inc. We are a buyer and seller of new and (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | Handyboard sudden turn off`
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Hi , I really need help. It's urgent!!! When I turn on the HD, the LCD did not appear anything Moreover, the program is not running running once I download and pressed start. The worst part is that the U13 LM7805 CTB is getting HOT that can burn my (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Sonar and Compass
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Hi Tom, I would be instrested in using your code for using both sensors when completed. I used your eariler code for the v2x and it works great, Thanks for your contributions and dedication to help those less competent writing code. bye. ---...--- (...) (25 years ago, 19-Apr-99, to lugnet.robotics.handyboard)
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| | 12v SLA Battery
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Hi all, I'm currently putting together a handyboard system, and my question is, can I simply use a 12v sealed lead acid battery in place of the 9.6v rechargable pack? I know that the interface board won't be able to charge the SLA, but apart from (...) (25 years ago, 18-Apr-99, to lugnet.robotics.handyboard)
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| | Re: first step in assembly of the handy board...
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(...) If you are at section 4.1.2 of the assembly manual, follow the debugging routine outlined in 4.1.3 ie. check the DC adapter for polarity, check the LED for polarity, check the orientation of U13 and D3... Hope this helps, Duncan (25 years ago, 18-Apr-99, to lugnet.robotics.handyboard)
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