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Hi everyone, The mistake you make in your calculation is that in your calculation you take the entire 15V for the resistor and this leaves no voltage for charging your NiCad. Do the same thing again and deduct your NiCad voltage from the 15V you (...) (26 years ago, 14-Nov-98, to lugnet.robotics.handyboard)
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| | FT639 and Lynxmotion IRPD
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Has anybody try to interface a FT639 to a Handy Board ? Has anybody try to interface a Lynxmotion IRPD kit to a Handy Board ? (26 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | Re: how to adapt a voltage signal?
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You could use resistors to make a 1/10 voltage divider. If you need high input impeadance, you could build an Op-Amp circuit to divide the voltage by 10. Most ADC chips have a pin that is the reference voltage for the high end of the scale--set this (...) (26 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | how to adapt a voltage signal?
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greetings to all i dont know if it has been asked before, but im trying to use son extra ADCs on my handyboard, trouble is they have a 0 to 5V range (analogue) but im trying to adapt the signals in the ranges of 0 to 50 volts, how do i make them (...) (26 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | Re: your mail
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(...) 3 Watts is correct. Look at the resistor on the HB charger board. It's pretty hefty too. -Scott (26 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | encoder
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hi, I need to know what is really the 'processing time' that used in encoder especially used when a pulse is actually being recorded. I load the file "encoder.lis" into the standard lib file. I'm using a optical encoder which is a slotted wheel. (...) (26 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi all, Ok now i know how to charge my NiCad batteries i have laying around. Thanks to Brett and Scott for the info. I have been doing my sums to try and work out the series resistor i need to charge a 2Amp NiCad at C/10, but my figures dont seem (...) (26 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | Re: questions
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(...) Thanks for the info and the code. got it. But I need something like an implementation of Proportional-Integral Controller or P-I-Differential Controller (Feedback Control Loops), which we always see on any control books. Thanks in advance. (...) (26 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | Re: questions
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(...) Sure. I wrote the attached program to keep my robot tracking in a straight line (it used to arc across the floor). It's not very elegant code, but it works. Note that some of the constants will need to be tweaked for your particular (...) (26 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Connecting two HandyBoards through their serial ports
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Gads Bill, you are right and my info in the FAQ is dead wrong. I have updated the FAQ with the corrected information. *Thanks a lot* for working this one through. There are few things more annoying than completely wrong documentation (compiler bugs (...) (26 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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