| | Re: Help needed reviving my HB
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Hello Edward and everyone, There are several causes that the Handyboard won't boot. 1) 62256 SRAM was dea 2) 74HC244 was dead 3) The Handyboard cannot put into bootstrap mode You can try to do the followings: Removes all the ICs on Handyboard except (...) (25 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Help needed reviving my HB
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Hi Everybody, Ensio, I'm having a very similyar problem, but with an interesting twist! Check this out! I still don't have any idea what is going on here... None of these have expansion cards. I have 5 HB's from when this robotics class was taught 2 (...) (25 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Time available during 1 kHz system interrupt?
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Hi Greg, It all depends. Various features of the HB can be turned on and off to change the amount of work done in the main ISR. By default the code uses 300ms to execute. The file lib_hb.c provides the following: /***...***/ /*** System Interrupt (...) (25 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
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| | Another Question About making .icb's
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Hey Group, I'm currently trying to get assembly files to work with my HB, i've discovered that the exe I need; as11_hb.exe only runs on UNIX, so you have to use (URL) to assemble the files, which I might say is a little inconvenient. So, where can I (...) (25 years ago, 1-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Does ic 3.1 really works properly?
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(...) Looks like it's time for my advertisement: Download HC11 patches for the GCC-2.8.1 compiler from my web page: www.eskimo.com/~archer or from ftp.eskimo.com/u/a/archer. They're GPL'ed, so they're free. Also on my home page is a link to the (...) (25 years ago, 1-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Time available during 1 kHz system interrupt?
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Greg, As much as you want. Your program is executed until it is finished, then the system interrupt routines follow, and run until they are finished. Good Luck, Gary Livick (...) (25 years ago, 1-Nov-99, to lugnet.robotics.handyboard)
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| | Time available during 1 kHz system interrupt?
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Does anyone know the approximate amount of time available for user assembler programs which "add on" to the existing 1 kHz HB interrupt? Another way of stating that is...how much time is used by the 1kHz HB ISR code? --greg ***...*** * Greg Starr, (...) (25 years ago, 1-Nov-99, to lugnet.robotics.handyboard)
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| | How can I connect 100 photocells to my handyboard?
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Hi, For a project I'm working on, I need to track the output of one hundred (100) photocells. I don't need great accuracy on any of them, but maybe a ten-step resolution at the most. Is there a relatively standard or well-known method to gather (...) (25 years ago, 1-Nov-99, to lugnet.robotics.handyboard)
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| | Three point targeting system
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I thought of an idea, Im sure has been used before. Where you have three sensors (ie light or ir) equidistant on an arc and they are all pointing towards the center of the arc. So that when they are all the same value the source is both right in (...) (25 years ago, 1-Nov-99, to lugnet.robotics.handyboard)
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| | Lost my IC3.2 Key
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Hi, My computer crashed three months ago and I lost my IC3.2 software. I have re- downloaded it from Newton Labs IC page, but I do not have a record of my key. I have written Newton Labs for my key, but they haven't responded yet (actually, I just (...) (25 years ago, 30-Oct-99, to lugnet.robotics.handyboard)
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