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I am trying to interface an Optrex DMC display to a miniboard. What pins besides the data lines need to be connected and to what? Anyone used these displays yet, I have two a one line x 16 characters and a two line x 16 characters. The pin out (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Choosing a shaft encoder?
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(...) hy, I used HewlettPackard shaft encoders HEDL5540 (500 steps per revoltion) with HCTL2020 quadrature shaft counters/decoders. With them you get 500*4=2000 steps per revolution, which is quite a lot. For me They seem to be a good (but not (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Choosing a shaft encoder?
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(...) I've had good results using the Hall-effect magnetic sensors that Patrick Hui sent with my HandyBoard. I glued magnets into three of the six holes in a Lego pulley wheel and glued the sensor into a small Lego brick. I don't know the part (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
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| | Re: How to use the addition analog port ?
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You can time share both your digital and your analog so long as your signal update speeds are not critical. Use a 4 to 8 demultiplexing chip for 4 of your digital I/O and an 8 to 4 multiplexer for the other 4. This effectively provides 8 digital (...) (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
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| | When people answer a question, I would like to broaden my knowledge as well.
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Please either carbon copy your solutions to me, or the HB mailing list. I see a lot of good questions, but only a very few peoples responses. Thank you, (26 years ago, 28-Nov-98, to lugnet.robotics.handyboard)
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