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i am sorry, but i have never readied that software. to debug, use a logic probe and check all of the 28 pins of the RAM chip. address, data, and enable lines should be flashing when the HB is turned on. if you see a line stuck at 0 or 1 that might (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Processor load
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1) Is there a way to print the actual processor load onto the screen ? or another way to see for example how much load a program causes ? 2) Does anyone know what resistors i need to produce a voltage divider to measure the voltage of the battery (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | digital and analog port on HD
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Hi, I want to use the digital port as an analog port input. How should I convert the digital port to analog in using programming way ? I do not quite understand the explanation on the technical manual handout. if possible, how to convert the analog (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Polaroid 6500 Ranging System
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I recently purchased a 6500 ranging system and have connected it to the HandyBoard (HB) 1.2 Expansion Board. I am using IC ver 3.1 from Newton Research Labs and loaded the sonar.c code module provided through the MIT website. The HB passed all (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Re: help again
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check that the RxD line on the hc11 is properly pulled up to +5v through R15. also, make sure you are *HOLDING DOWN* the STOP button until the BATT light goes off. this wasn't clear from your msg. finally, try getting the HB into boot mode with the (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Grounding robots
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(...) By ground, I just meant the HB ground. The important thing is just that everything in an electronic system share the same ground; voltages are relative, and the ground is just the shared reference point--the point arbitrarily defined to be (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Continuous charging
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Graham, J. Todd wrote: <snip> (...) If you use zap charge mode, you'll end up cooking your batteries unless the HB draws just the right amount of current. If you use any motors or other high current devices connected to the HB, trickle charge mode (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | help again
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thanks to the immediate responses from the mailing list I was able to remove the connector bug from my handy bosrd and now my interface board is complete. But the handy board does not enter the download mode The sitution is as follows: Once I (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | RE: gpu5x??
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Step 8.2.1 of the Handy board Assembly insructions has code that lights a motor port LED when a TV remote is aimed at the infared demodulator it says to type the following at the IC prompt: while (1) {if (4 & peek(0x1000)) fd(0); else bk(0);} (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Capacitors Voltages?
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May I know the voltage of the capacitors for the Handy-Board partlist. Or where can I find out (web site)? Thank u. (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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