| | New Computer Connection
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Hello, I had the serial cable connected to the com port that was not working. I went to Control Panel System, device manager Ports[COM&LPT] Communications Port[COM1] Only one com. port is listed here but I have another serial port physically next to (...) (25 years ago, 13-Feb-00, to lugnet.robotics.handyboard)
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| | new computer connection
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Greetings All, Have purchased a new computer and cannot communicate with my handy board. I remember some time back in the mail archives that some settings had to be changed if the computer was too fast for IC but cannot find it now. Computer has a (...) (25 years ago, 13-Feb-00, to lugnet.robotics.handyboard)
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| | Re: (no subject)
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(...) The obvious question is how you are measuring your capacitor and resistor values?. Resistors (presumably metal film), are typically +/-1%, but capacitors are unlikely to be 'better' than +/-5%, and may be significantly worse than this (many (...) (25 years ago, 12-Feb-00, to lugnet.robotics.handyboard)
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| | Re: 41Khz not 38KHz
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The 3.81K resistor is probably more accurate than its rated 1%, but the capacitor may be much less precise, unless you got a tight tolerance metal film one, (as I think the part list specifies). Precision also relies on the thresholds of the Schmitt (...) (25 years ago, 12-Feb-00, to lugnet.robotics.handyboard)
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| | (no subject)
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Maybe somebody could help. I am try to use the IR output. the problem is that the HB is modulating the signal at 41kHz and I need to get it down to 38kHz. I have checked the resistor and capacitor used in generating the frequency. R = 3.81 K C = (...) (25 years ago, 12-Feb-00, to lugnet.robotics.handyboard)
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| | encoder chip
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Hi, does anyone know how to interface the hewlett packard decoder IC to Handyboard? Regards,William. (25 years ago, 11-Feb-00, to lugnet.robotics.handyboard)
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| | Re: IC routine for ranging and angle finding with the GP2D12
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Following up on my challenge to get some things happening here..... Following is an IC routine that can be used to find angular displacement from and distance to a wall. It uses the Sharp GP2D12 IR ranging module mounted on a servo to do the (...) (25 years ago, 10-Feb-00, to lugnet.robotics.handyboard)
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| | Re: Shaft encoders interfacing with Handy Board
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I've had great success using Hall-effect magnetic sensors as shaft encoders with the Handy Board. The sensors are the type that Patrick Hui (of the Robot Store HK) includes in his HB sensor kit. I glued small disk magnets into the holes in a pair of (...) (25 years ago, 10-Feb-00, to lugnet.robotics.handyboard)
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| | Shaft encoders interfacing with Handy Board
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Hi everybody I'm trying to find an encoder to work with my Handy Board(using a DC motor). Please help me if you know anything about Shaft encoder(S1 optical encoder)interfacing with Handy Board. Can i use the Shaft encoder? Do you know how to (...) (25 years ago, 10-Feb-00, to lugnet.robotics.handyboard)
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| | Handyboard for Sale
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I bought a handyboard for my Thesis to do some data aquisition....now that I am done and out in the working world I don't think I am going to need it anytime soon. (Unless I go for my Phd :) ) Anyway, it is fully assembled and works fine. Comes with (...) (25 years ago, 10-Feb-00, to lugnet.robotics.handyboard)
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