 | | Re: navigation alorithm
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*Robot Science & Technology* is a fairly new magazine, and I give it my high recommendation. Issues 2, 3, and 4 contain a series, "Popular Micromouse Algorithms", by Tak Auyeng, PhD. Lots of good info for anyone interested in the IEEE Micromouse (...) (26 years ago, 28-Jan-99, to lugnet.robotics.handyboard)
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| | Polaroid 6500 - HB/ExpBrd problem
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I assembled the expansion board and tested all I/O ports. Everything checks out fine. I have the 6500 sonar module with the flex cable. After loading 'sonar.c', I tried the 'sonar_display()' function. The transducer came to life with its 'clicking', (...) (26 years ago, 28-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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Thanks Fred and you too Ranjit, I have just now got my board to accept the expansion board files. I reloaded the expansion board zip files,installed in ic but still would not load. It did not give a error message for the expsens.c file but did for (...) (26 years ago, 28-Jan-99, to lugnet.robotics.handyboard)
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| | Re: executing instructions quickly
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(...) If your macro just calls the "move" routine it will make absolutely no difference because your are in effect typing in the above anyway. If your macro inserts the code for "move" inline rather than calling it it will be only very slightly (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: navigation alorithm
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An article on the magazine, _Robot Science and Technology_ (relatively new publication), describes the micromouse competition and algorithms for maze solving. You can look up the HP somewhere and maybe get a back issue or something. I forgot which (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: resistor packs and expansion board.
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I just saw the following: The artwork on the schematic sold by Douglas shows that RP1 is a 1Kx7 where as your schematic and parts list shows it to be a 1Kx4. Response from Douglas: I do not know where that information came from. The list we (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Native 68hc11 C compilers
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I definitely would be interested in hearing more... (...) I have had excellent results with the Introl C compiler demo. In fact, the demo has more than enough capability to do some very interesting things. Just for the fun of it, I wrote a (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Wireless communications
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Hi all, Lately, there have been a few questions on wireless communication between a handyboard and a PC. I knew Jan Sipke van der Veen had designed a something that would do just that, but I found his homepage was removed - he graduaded from (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | resistor packs and expansion board.
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Fred, I thought I found a minor mistake in the parts list for the expansion board. But I now believe I didn't. The artwork on the schematic sold by Douglas shows that RP1 is a 1Kx7 where as your schematic and parts list shows it to be a 1Kx4. Since (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Native 68hc11 C compilers
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(...) I have had excellent results with the Introl C compiler demo. In fact, the demo has more than enough capability to do some very interesting things. Just for the fun of it, I wrote a multitasking operating system and some basic libraries for (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | sonar
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hello, I use program "sonar.c" and i have a problem. that is i run program (load sonar.c by ic.exe then type sonar_display(); ) to handy board,for measuring distance between 6" - 35" but the display (LCD )shows integer(number) between 0- 32767 ,that (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | executing instructions quickly
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Just a quick question with regards to executing some instructions quickly. I'm using the pa7i9600.icb file to control a couple of mini SSCs, and I need to move 6 servos as close to simultaneously as I can. My question : is it faster to write a (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: HB Expansion kit
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(...) yes. this was omitted from the assem instrcts and i've added it now. (...) look at the parts list for things that are referred to as "xx-pin male header". these have a part number; e.g., J3, a 14-pin male header. look for J3 on the PCB (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: ** voltage dropping and current limitting**
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(...) Look in an older edition of The Art of Electronics by Horowitz and Hill. They use the LM317 as an example voltage regulator, explain the resistor values, and provide a data sheet in the appendix. This is a very useful reference book for all (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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Yes, I had a similar problem. I then downloaded the revised files and found "lib_hb.c" failing to load also. After opening it in a text editor, I found the same 'line feed' type of characters (square boxes). I deleted them and made sure that all the (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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I downloaded the revised files and found "lib_hb.c" failing to load. After opening it in a text editor, I found the same 'line feed' type of characters (square boxes). I deleted them and made sure that all the comment lines ( /*.........*/) were (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: a chip question
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(...) Try to get a hand on a nice little internet program named "PartMiner". very very very very useful :) .---...--- . . . | Remi Desrosiers | "My Youth in Arcadia" ICQ# 7228856 | harlock@videotron.ca . remi.desrosiers@polymtl.ca . . (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | HB Expansion kit
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I received my HB expansion kit from Douglas Inc. (under $30 and fast delivery!). I've tried to gather as much documentation on its assembly. However, I have two questions: 1) The DOT on the resister pak's: Is that the end which goes in the SQUARE (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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| | Re: ** voltage dropping and current limitting**
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(...) Use an LM317T adjustable voltage regulator and 2 resistors. If you can't find a data sheet on it on the net somewhere, someone should be able to give you the formulas for figuring out the resistors. Find national semiconductor on the net and (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Serial Output Drivers for the Expansion Board
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Hi, Could *each* of the digital output pins on the Expansion Board be used as 9600 Baud Serial Output Drivers ? Could a higer baud rate be used with any of the digital output pins ? Could someone clever than me create the libraries and the (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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