 | | The frequency of a digital input...
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Hello all, What is the maximal frequency that we can put on an digital input of HB? French Studant... By, and thanl you... (27 years ago, 27-Nov-97, to lugnet.robotics.handyboard)
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| | Re: Handy Board PWM Routines
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(...) <snip> LDAA speeda ; rotate bits in motor speed ASLA ;Rotate the speed bitmask one bit position. BCC SPDoffA ;Did we set the carry flag by shifting a "1" out ; of the MSB of the register? ADDA #1 ;We pushed a "1" out of the register, better ; (...) (27 years ago, 27-Nov-97, to lugnet.robotics.handyboard)
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| | HB sonar new drivers
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the new code is improved in the sense that 1. there is a clear schematic and wiring diagram; 2. it does not require the removal of a motor driver chip; 3. all driver code is written in Interactive C. fred (27 years ago, 27-Nov-97, to lugnet.robotics.handyboard)
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| | Handy Board PWM Routines
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I've recently been implementing a PD controller on the HB for use in a line following robot, and have been having some problems with instability, especially around the zero point. I was beginning to suspect that the 8 levels of PWM in the HB library (...) (27 years ago, 27-Nov-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid 6500 stuff
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What was wrong with the old drivers? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art ---...--- (...) (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)
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| | Handyboard problems
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We've encountered a problem with our Handyboard that we hope the list may be able to help solve. It all started with the "Normal/Zap" switch on the charger board, which was somewhat loose. It wiggled whenever we changed the setting. After a couple (...) (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)
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| | RE: Replacement for ZTX614 NPN Darlington Transistor
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I have looked in the Maplins Catalogue and they don't stock the 614, they stock others but not this particular one and I was wondering if anybody knew of a compatible version. Thanks for any help. John Hatton johnha@icsplc.co.uk (...) (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)
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| | RE: IR Demodulator Range Finder Hack
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(...) Sure thing. The basic wiring for a 555 in astable mode is pretty straightforward; +5 volts |-----+ +-|-----|-+ +-Res.1-------| 8 4 | | | | |---...---| 7 3 |------> to Base of BJ Transistor Res. 2 | | | +----| 6 "555" | | | | | +--------+----| (...) (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)
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| | Sonar Adaption
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I am building a sonar ranging device and I want to add it to one of the digital inputs on the HandyBoard. How do you get the board to respond to the message given to it from the sonar? Adam Freedman adamfdp@aol.com (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid 6500 stuff
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Oh yeah, I meant to send an e-mail: "There are new drivers and a wiring diagram for using the Polaroid 6500 sonar ranging module with the Handy Board!! Just visit the HB home page: (URL) -Fred" That said, the answer to this question is simply, get (...) (27 years ago, 26-Nov-97, to lugnet.robotics.handyboard)
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