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The Handyboard seamed to work fine for the last few days. Sudently today I got this -POWER GLITCH- message when runing the HB with just IC loaded in it. What does it mean ??? I thought it could be a loose connection or something similar but even if (...) (28 years ago, 16-Aug-96, to lugnet.robotics.handyboard)
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| | Re: Musings regarding Handyboard Expansion & Interfacing
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(...) Dallas 1202 for example, or other models from dallas semi. The data sheets are on their web site ((URL) from memory) There is a example of code for the stamp at: (URL) Seront, seront@seism1.ess.sunysb.edu (MIME ok) (URL) (28 years ago, 14-Aug-96, to lugnet.robotics.handyboard)
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| | Re: Musings regarding Handyboard Expansion & Interfacing
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(...) One of them "smart sockets" (I think dallas makes 'em). Put it in under the RAM chip, no extra wiring necessary. Just some special code :-). (28 years ago, 14-Aug-96, to lugnet.robotics.handyboard)
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| | Musings regarding Handyboard Expansion & Interfacing
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Just got Aug issue of Circuit Cellar. Full of robotics goodies & interface circuits . In the meantime, following are some more of my thoughts on interfacing. ***...*** * MUSINGS ON THE SUBJECT OF HANDYBOARD INTERFACING * ***...*** * Special (...) (28 years ago, 14-Aug-96, to lugnet.robotics.handyboard)
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| | Musings regarding Handyboard Expansion & Interfacing
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***...*** * (More) * * MUSINGS ON THE SUBJECT OF HANDYBOARD INTERFACING * ***...*** * Multiplexed digital I/O * * Sharing those valuable IC and OC pins * ***...*** Expanding a "clever" handyboard I/O line (an IC or OC or PA I/O) into several (...) (28 years ago, 13-Aug-96, to lugnet.robotics.handyboard)
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| | Re: Pulse Accumulator
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(...) How long did it work before? Have you checked the solder and socket connections of the chips in the circuit? Sometimes chips shift in their sockets and incur additional impedance in a connection, causing problems. Is your board subject to (...) (28 years ago, 12-Aug-96, to lugnet.robotics.handyboard)
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| | Pulse Accumulator
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Hello everyone, The pulse accumulator on my handyboard no longer is working. It was working fine, and then the next minute it just stopped... Can I just reaplce the HC11 to fix the problem? Thanks.. joeo@symtec.com (28 years ago, 12-Aug-96, to lugnet.robotics.handyboard)
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| | Re: Servo question
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(...) One thing to note, not all servos are designed to turn 180degrees. The ones designated as "retract servos" are designed to turn 180 degrees, the rest are designed for something around 90degrees. Most can be modified to turn as far as you want (...) (28 years ago, 12-Aug-96, to lugnet.robotics.handyboard)
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| | Pulse Accumulator
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My Pulse Accumulator no longer works... Does anyone know how to fix it? I was using it to measure RPM, and it was working fine...the next minute it just completely stopped working... Can I just replace the HC11? Thanks.. Joeo (28 years ago, 12-Aug-96, to lugnet.robotics.handyboard)
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| | Re: piggyback pentium/powerPC
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(...) Try looking for embedded PC systems. The motherboard are sometimes roughly the size of the HB. You may have to buy controller board also to drive a hard drive or a Solid state disk. Expensive stuff! The good thing about some embedded systems (...) (28 years ago, 12-Aug-96, to lugnet.robotics.handyboard)
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