 | | DL with a Mac
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Fred- Thank you for the new version DLoader MCL. I can now indeed load the P- code. Useing this Mac 6500 Apple talk off-printer port-I am still finding odd things-very odd things. A week back-I replaced the hex inverter, memory chip, & U6. Now-after (...) (26 years ago, 30-Jan-99, to lugnet.robotics.handyboard)
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| | More information for debugging my problem
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I'm the one with the dead HB. When I look at R14 (next to the SPI header) it is black and is very hot. Do I have a dead resistor? Thank You Peter Eacmen BLS petereacmen@usa.net (26 years ago, 30-Jan-99, to lugnet.robotics.handyboard)
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| | URGENT Please Help my HB is dead :=( !!
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I had my robot in a box for about two weeks when I went to turn it on the battery was dead. Now when I turn it on nothing happens the LEDs don't go on and nothing happens, except I can smell burning. When I touch the 6811 it is a bit warm but not (...) (26 years ago, 30-Jan-99, to lugnet.robotics.handyboard)
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| | sonar sensors
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Hello, I know that this is slightly off topic, but does anyone know of a company that sells a stand-alone sonar ranging unit that works from 0" to 20"? i know that poloroid makes the one made to be interfaced with a microcontroller, but do they make (...) (26 years ago, 29-Jan-99, to lugnet.robotics.handyboard)
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| | Re: ** voltage dropping and current limitting**
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I have a transformer, when powered by 110 vac I get 16 vac out. I put it through a bridge rectifier and the problem is when I put a cap say 20v 1000uf across the + - of the rectifier, the voltage jumps to about 20 vdc. If I omit the cap and attach (...) (26 years ago, 29-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Green mask
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please see (URL) all there in the zip files, including the solder mask (green) layer. f. In your message you said: (...) (26 years ago, 29-Jan-99, to lugnet.robotics.handyboard)
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| | Green mask
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I would like to get a set of Handy board PCBs done. I have obtained the diagrams of the PCBs from the handy board site but I need to get Green masking done due to the intricate design but I haven't found the greenmask diagrams on the site. If (...) (26 years ago, 29-Jan-99, to lugnet.robotics.handyboard)
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| | 6811 Downloader MCL, version 1.1
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hi cappy & others (sorry non-mac people), i've put up a revision of the Mac 6811 Downloader MCL. this version checks that everything's copacetic before dumping the .s19 file into external RAM. in other words, it checks that the desktop is properly (...) (26 years ago, 29-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Mac DL problems
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ok, i think you've established that the hardware is working properly. the fact that you can get IC to boot and talk to the board is strong proof of that. the zterm test demonstrates that the mac can send chars out; the IC example proves (...) (26 years ago, 28-Jan-99, to lugnet.robotics.handyboard)
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| | Mac DL problems
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Fred- Per your suggestion because I am having trouble DLing to the HB to my HB thru my printer port with Apple talk off-I DLed ZTERM, set the baud rate to 300 and watched the green light blink every time I hit a key on the Mac. A few oddities- The (...) (26 years ago, 28-Jan-99, to lugnet.robotics.handyboard)
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| | 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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