 | | Re: Handyboard Expansion Sonar Issues
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The quickest check is to go from V+ of the diode string and see if continuity to pin 1 of TL851 and pin 5 of SN28784 are less than 5 ohms. Similarly check from ground of your power connector to pin 3 of TL851 and pin 16 of SN28784 are less than 5 (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Dinsmore Compass 1490
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The Dinsmore 1490 (basically a Hall effect unit) reports the 8 cardinal compass points, a 45 degree precsion (N-NE-E-SE-S-SW-W-NW). If you wanted more precision then you have to upgrade to the Dinsmore 1525 or 1655 which produce analog signals. They (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Dinsmore Compass 1490
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(...) Why would you want to? They would be as expensive to build than to buy. The Dinsmore device is only $12, and PNI Vector2X is $49. (retail, probably cheaper somewhere). The Dinsmore device has a compass mechanism (real basic, like you take (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | [moderately off topic post] LCD shutter material?
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Hi all, This really doesn't have anything to with the HB, but I'm at my wits end: I'm building a large high speed shutter-type device that will be controlled by a microcontroller (likely a BS2SX). Years ago I heard of a type of LCD shutter material (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | IR Proximity Detector using a pic
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Hi, I found this very easy and cheap to build IR Proximity Detector. It uses one PIC12C508 or 509. I post this on the mailing list, because i searched some days until i found it, and maybe there are people, who are searching the same :) For those (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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