 | | MAX232 Chip
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To all: I am constructing my first Handy board. I am currently building the interface board, but have hit a small 'snag'. While performing 'step 2', installing capacitors and MAX232, and then testing, I did not recieve the correct voltage outputs. (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: External Motor Power and the Expansion board.
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ahah, good question. the exp bd grabs the 9v motor power for the servos, sonar, and 9v lego sensors. if you're not using any of these, you could leave connector off the exp bd and you'll have no probs. if these are important, you need to reconnect (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | External Motor Power and the Expansion board.
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Greetings all! I just got the kit for the expansion board in the mail, and I realized something: I modified my handy board to accept external power for the motors through the power expansion header, using the instructions at: (URL) and now I don't (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: electronics question please help
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The modulation frequency of the IR diodes must match the sensor (depending on exact part number, around 38 KHz) within +/- 3 KHz. As you move away from the center frequency, detection drops off sharply. Are you able to confirm the modulation (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | ICC11v5 - interrupts
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I have a HB (running under IC3.2) that is linked to a 'slave' TCOMP board (68HC11E1, 32k ram) which is programmed using ICC11v5. I need a function similar to 'msleep' on the TCOMP unit. I am trying to use portions of Chuck McManis' HB library for (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D02 and assembly language
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Hi, I have the same problem. For now I don't care since the GP2D02 is the only thing connected to an digital output. I am using the following: Include: subroutine_get_userval: ldab USERVAL ; load USERVAL to d register clra ; clear upper byte rts ; (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | Re: electronics question please help
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(...) You can download the archives from the HB web site: (URL) Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ ' ` ~~~...~~~ ` ~~~...~~~ Wendy Parson, A liberal is a man too broadminded Will Bain, to take his own side in a quarrel. & (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Tracking device
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Chen, I am no expert on computer vision, but Greg Hager of Yale University's CS dept. gave a talk at our school last week about developing function libraries for visual tracking. His web page is (URL) It seems relevant to what you are trying to do. (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Tracking device
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(...) If you are trying to track something moving, it is pretty simple, if you have a fixed camera. Take two images, separated by a reasonable amount of time (2 subsequent frames may not be enough). XOR the two frames, everything the same will show (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | Re: electronics question please help
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I am new to the list and want to know if there is anykind of archives of old e-mails to the list as I would like to see them. Thanx ___...___ Steve Wall Sir Sandford Fleming college Swall@flemingc.on.ca (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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