 | | Re: non-linear motor speed problem
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The test isn't fair under no-load conditions, because then the motor just spins when you give it any signal. Are you sure the performance is the same when you have a full operating load? This would not make sense; I would guess that this would mean (...) (28 years ago, 11-Mar-97, to lugnet.robotics.handyboard)
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| | non-linear motor speed problem
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I am using servos converted to plain gearmotors as the motive power for my baby bot. Finally I worked out how to add shaft encoders to them. (Found a small opto switch to poke through the inside of the case on the first gear). The servos I am using (...) (28 years ago, 11-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Problems with my DC-Motors
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(...) Yes, i do / Ja ist schon gut :-) (...) Here i suspect your speed regulator chip. (...) Servo's brauchen nur ein wenig strom -> i really suspect your speed regulator chip. (...) Try swapping your speed controller chip. Groetjes, Hans (28 years ago, 10-Mar-97, to lugnet.robotics.handyboard)
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| | Re[6]: IR Collision avoidance
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Adam, I have it working, but I want to tidy it up a bit. At the moment it uses 2 op-amp stages, I think it can work with one. After all, it's just a precision diode! I will put something on in a few days. Fred, I do not have schematic capture (...) (28 years ago, 10-Mar-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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Some IR Leds have graphs from the manufacturer showing angular characteristics. I've seen some nice ones in linear and polar plots of angle vs. intensity. See if you can get the specs of the LEDs you order. This may help you with your configuration. (...) (28 years ago, 9-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Breaking
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I've slammed it backwards a couple of times. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art ---...--- (...) (28 years ago, 7-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re[4]: IR Collision avoidance
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Richard, Please send me the schemtics on the $2 circuit and whatever else I need to know to get this thing up and running. I would appreciate this very much. Thanks. (...) (28 years ago, 7-Mar-97, to lugnet.robotics.handyboard)
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| | IR sensors
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Is there any sort of "pre-built" IR module to interface IR to the handyboard. Perhaps a schematic or something? Thanks ---...--- Adam B. Cox check out my web page Computer Engineer (URL) Communications Corp. vmail: 416-241-7000 (x224) ---...--- (28 years ago, 7-Mar-97, to lugnet.robotics.handyboard)
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| | Problem with H-Drives
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I've been having problems with the Handy Board being able to go into download mode. It seems to work fine without any motor drivers connected, and with one driver chip plugged into one side of the board, it also seems to work, but still not (...) (28 years ago, 7-Mar-97, to lugnet.robotics.handyboard)
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| | vector2x
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Does anyone have schematics or know where I can download schematics on the hookup of the v2x compass? Thanks. ---...--- Adam B. Cox check out my web page Computer Engineer (URL) Communications Corp. vmail: 416-241-7000 (x224) ---...--- (28 years ago, 7-Mar-97, to lugnet.robotics.handyboard)
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