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Hi, I am working on a robot with the HandyBoard. I am thinking about using the Sharp GP2D12-Sensor because the other IR reflective sensors I use won't work under sunlight. I read the spec. sheet of GP2D02 and GP2D05, both of them mention that they (...) (24 years ago, 1-Jul-00, to lugnet.robotics.handyboard)
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| | RE: Motors spinning at startup
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I also tried all sorts of capacitors, etc. in an attempt at solving this problem. While the capacitors helped to minimize the length of time before the motors calmed down, there was always a short period of motor craziness that never went away. I (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
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| | Re: Motors spinning at startup
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I have been having the same motors spinning on powerup "problem" with my Handyboard. I tried various capacitor combinations on my modified servo motors to no effect. Fred M. finally provided the answer: (...) In short, there is nothing wrong with (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
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| | Re: sonar and overflow
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Hi I think that the longest distance your able to measure is about 2.7m. The counter is 16 bit long and has no sign. But the integer is has a sign, so you can only use 15 bits, which is 32768. The counter increases each 0.5ns (pink book). Sound (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
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| | sonar and overflow
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Greetings all, Has anyone managed to work out some code which checks the overflow bit for the counter used in the polaroid sonar code? At the moment mine distance readings seem to be maxing out around 1.5m or so, and I'm not sure if it's the timer (...) (24 years ago, 30-Jun-00, to lugnet.robotics.handyboard)
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| | Re: Unable to go into bootstrap
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This problem is very common. Probably, your board is fine. Check this page on the Handyboard site to start off with : (URL) you have no luck with that, then try fooling with your port settings. Switch from xon-xoff to none, etc. Somewhere in there (...) (24 years ago, 29-Jun-00, to lugnet.robotics.handyboard)
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| | Unable to go into bootstrap
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I have recently obtain a handyboard kit. This is my first board. After connecting the Ni-Cad batteries and adapter, I proceeded to download therequired .s19 file using HBDL. It was unsuccessful. The LCD screen displayed one line of brightly lighted (...) (24 years ago, 29-Jun-00, to lugnet.robotics.handyboard)
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| | minor update to new random.c
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Field testing in a real class is the best way to get bugs out of code :-) My summer robotics class discovered a couple of "misfeatures" in my new random.c pseudo-random number generator library: (1) the rndrangei(), rndrangel(), and rnd() functions (...) (24 years ago, 28-Jun-00, to lugnet.robotics.handyboard)
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| | Re: Sound Start for Handyboard
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(...) There's a circuit at the Seattle Robotics Society website, under the encoder. Sounds like it might be what you're looking for. -Jim Munro <jimmn@xnet.com> (24 years ago, 27-Jun-00, to lugnet.robotics.handyboard)
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| | Sound Start for Handyboard
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I need to build a circuit that will listen for a 3.5kHz tone and then activate a program on the Handyboard. I have seen a few different circuits in various books but none seem tailored to my specific needs. Does anyone out there have a good electret (...) (24 years ago, 27-Jun-00, to lugnet.robotics.handyboard)
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| | Data Acquisition
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Hi. I am interested in using a handy board for data acquisition from a small engine dynomometer and as a data logger in a 1/4 scale race car. I want to read 3 rpm readings, one from the spark plug, one from the engine clutch bell and one from the (...) (24 years ago, 27-Jun-00, to lugnet.robotics.handyboard)
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| | Re: Dificulties downloading to partially assembled board
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The "fast" processors are legendary for having problems with loading IC pcode and libraries. Probably, your board is fine. Have you looked at the page on the HB website having to do with com problems? It's at (URL) is a good place to start. If you (...) (24 years ago, 23-Jun-00, to lugnet.robotics.handyboard)
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| | Dificulties downloading to partially assembled board
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I am at the point in construction where it asks you to test serial communications to the board before proceeding with memory installation. I hesitate to continue until I am comfortable with the workings of my board. When trying to establish comms, I (...) (24 years ago, 23-Jun-00, to lugnet.robotics.handyboard)
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| | **Deleting files?**
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Hi , I was wondering if there is a way to delete all user input files from the Hb without typing," UNLOAD FILE NAME".? Also is there a way to make the HB execute a command while downloading a program, without causing the Hb to stop loading my (...) (24 years ago, 23-Jun-00, to lugnet.robotics.handyboard)
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| | HB for sale
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I am seeling my HB, it was only used for my senior project. Total time of use would be about two weeks. One modification was made to the board which was a differant switch was put on to it to turn it ON and OFF. If you are inteested please e-mail me (...) (24 years ago, 23-Jun-00, to lugnet.robotics.handyboard)
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| | HB site down, use alternate
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hi all, we are working through a hardware crash of the primary HB web site server machine. for now, please use instead: (URL) (24 years ago, 22-Jun-00, to lugnet.robotics.handyboard)
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| | LCD Memory Map
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I am just checking that I have got the LCD operation right so I apologise to anybody who is already clear on this. On the LCD module the Register select and Read/Write pins are connected to the A9 and A8 lines of the HB and the DB0-DB7 pins are (...) (24 years ago, 22-Jun-00, to lugnet.robotics.handyboard)
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| | Handyboard Site
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Hey all, Feel free to check out this handboard site, it's used along side a course taught at the University of Alberta. Feel free to write me back with any criticism (URL) Verret B.Sc. Electrical Engineering M.Sc. Electrical Engineering 2002 (...) (24 years ago, 21-Jun-00, to lugnet.robotics, lugnet.robotics.handyboard)
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| | new version of Rich Drushel's random.c libarary for IC
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I have created a new and better version of my random.c IC library for pseudo-random number generation. The old version had an algorithm that I cooked up myself, and while it was fun to program, and fun to get working in a multitasking environment (...) (24 years ago, 15-Jun-00, to lugnet.robotics.handyboard)
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| | Re: HB Memory map
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Device Location Notes ===...=== 6811 internal $0000-$00ff Built-in RAM (A1 chip) $0000-$01ff (E1 chip) ---...--- 6811 control $1000-$103f Built-in registers ---...--- Expansion I/O $4000-$4fff Memory reads in this range enable the Y1 latch selector, (...) (24 years ago, 14-Jun-00, to lugnet.robotics.handyboard)
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