 | | Has anyone built this homebrew sonar ranging board?
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(URL) a system similiar to the Polaroid 6500, but costs <$10 to build. Has anyone done it? Should I try it and share the results? (of course I should!) Does anyone see any major drawbacks after reading that, as compared to the Polaroid 6500? Is (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Joseph, (...) I have been trying for two weeks to get a hold of them. None of my messages (phone/email) are answered, and I am still waiting for the parts (high current H-bridges) to arrive. I suppose they still don't have them in stock, but it (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Digital Micro Systems
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I placed an order with Digital Micro Systems for two complete handyboard systems on 16-April-97. Delivery was promised by 5/12. It has not been received. Three phone calls to their answering machine (is this place ever open?) have remained (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Generic 68HC11 board question-
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w/o the ds1233, the contents of the ram will become corrupted during power-up or power-down of the 6811. an r/c could protect during power-up, but wouldn't reset the 6811 during power down. remember it's still trying to execute code as system (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Soldering...
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(...) Mirco >System, since I'm a bit tight with money. However, I'm a bit hesitant >about assembling the kit because I have no experience at all with (...) like the HB before (I'm a software type guy), but thanks to Fred Martin's concise (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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