 | | Noise on the handy board
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| Fred and handyboard experts, I have assembled two handyboards and I am now helping 15 other people build theirs at San Jose State University. I found a problem on the first two I build that I belive causes the Sharp GP2D02 not to work. The school (...) (27 years ago, 31-Jul-99, to lugnet.robotics.handyboard)
| | | | | Re: Millisecond timing
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| (...) See the Polaroid sonar code (from the HB web site) for an example of how to measure timing signals on the TIC3 channel. You initialize with: bit_set( 0x1009, 0x30 ); /* ddrd */ bit_set( 0x1021, 1 ); /* at tctl2, */ bit_clear( 0x1021, 2 ); /* (...) (27 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
| | | | | Re: Millisecond timing
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| The clock speed on the Handy Board runs at 2 Mhz, which is plenty fast enough for most things IF you run the right code. IC, used in its C implementation is too slow to catch anything at 1 ms reliably. However, there are a few simple work arounds. (...) (27 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
| | | | | Millisecond timing
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| I recently bought a Handy Board to use in acquiring time measurements varying by one millisecond. The Handy Board has a clock speed of 2kHz, therefore it should be able to measure down to one half millisecond. What I have found however is that the (...) (27 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
| | | | | Can't bootstrap! & IR reflective sensors help
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| After assembling my own handyboard (ugh), and everything was (supposedly) solded OK, i tried to put the handyboard in bootstrap mode. But i get no results... i tested the stop button and it works fine (i compared with the OTHER handyboard i had)... (...) (27 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
| | | | | Re: Reading Serial Port
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| David Boosalis <dboosalis@mail.arc.nasa.gov> moved upon the face of the 'Net and spake thusly: (...) "Use The Source, Luke". Check the source code of the downloader in the Unix port of Interactive C. (...) I think you want 9600, not 921kbaud (unless (...) (27 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
| | | | | Re: Dead handyboard?
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| (...) Antistatic bags are conductive, right? You might have shorted the power to the ground via the bag itself, thereby killing your battery. Once a NiCad cell shorts, then it will can a large amount of current from a charger, possibly killing off a (...) (27 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
| | | | | Dead handyboard?
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| My hb was working fine, I took it on a trip in an antistatic bag. When I took it out of the bag, the battery was completely drained. But as soon as I started to charge it, one of the resistors burned up. So I tried charging it via the interface (...) (27 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
| | | | | Sharp GP2D12
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| Hi all, I want to use the GP2D12 distance measuring sensor with my handyboard. Does anybody know the pinout details for the three pins? Thanks, Thomas (27 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
| | | | | Sharp GP2D12
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| (27 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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