 | | Fw: Current Rating use on HB
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(...) that (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | encoder use in stepper motor
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hi, How can i use my self build encoder to locate the position when my robot reach a position ? Is it suitable to use a self build encoder together with the stepper motor? The self build encoder consists a photoelectric reflector sensor mounted (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | Re: IC dip 120 or Ic dip 210
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(...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | Current Rating use on HB
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Hi, What is the current rating allow to be use on the HD if currently I am using a stepper motor of rating 4.5V and current 3Amp ? Is it all right directly plug it into the HB? How should I increase the acceptable current rating on the HB? How (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | IC dip 120 or Ic dip 210
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Hi, Is there anybody came across such IC Dip 210 or Dip 120 ? rgds, chia (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | using interupts from IC
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I want to drive 3 stepper motors form a handy board. I have the code running now as a dll under windows. What Im trying to gain from the HB is using interupts, so I can remain in connntact with the control while the steps time out- right now I just (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Serial Communication with HP48 calculator
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(...) not that i am aware of. you could connect to the HB's phone jack as long as you don't have to talk to interactive c and your calc at the same time. see the FAQ serial answer. (...) the SPI is for high speed SYNCHRONOUS comms (data and clock (...) (26 years ago, 7-Sep-98, to lugnet.robotics.handyboard)
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| | Bootstrap download mode
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Hi I have been trying to get the HB into bootstrap mode without much success. Following the instructions in the manual, I held down the STOP button while turning on the HB. The red and green LEDs were supposed to turn on for a short period of time (...) (26 years ago, 5-Sep-98, to lugnet.robotics.handyboard)
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| | Re: [LCD screen]
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Like this: printf("\n"); printf("\n"); That's all there is to it. (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Bootstrap download mode
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see if you can get it to go into download mode when you don't have the phone cable plugged in. if this works, then you have some kind of probl with your serial connection. make sure you have a normal modem cable, and a telephone style RJ11 cable (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | [LCD screen]
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Hello all, I know it's a pretty stupid question, but anyone knows how am i supposed to clear(in Interactive C) the LCD screen of the HandyBoard ? I've tried printf("\n"); printf(" "); but it doesn't work. Thank you very much. Marcelo Manjon (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Steppr motor pulse problem
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Phillip: In the process I was referring to, you do not use the Handy board, driver or anything to determine the step sequence. You only use the motor and a battery (after you finish with the Ohm meter). The idea is to learn what the motor is (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | expansion board
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Hi, I was wondering how the expansion board is doing? Is out of testing? Any major glitches? Ilya (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | HB web servers down
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hi all, we had a filesystem upgrade last night and both of the Handy Board web servers (el.www.etc and lcs.www.etc) are presently down. Hope to have at least one of them running later today. Fred (26 years ago, 2-Sep-98, to lugnet.robotics.handyboard)
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| | HandyBoard for Sale
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If you are thinking about buying one... I have an extra HandyBoard controller board that I assembled and tested. Never used in a project. 68HC811E1 (2K EEPROM) 32K RAM 2 x 16 LCD 9 Digital Inputs 7 Analog Outputs IR Interface Nicad Batteries RS-232 (...) (26 years ago, 30-Aug-98, to lugnet.robotics.handyboard)
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| | Re: [Interactive C features]
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[Randy Sargent] spake unto the ether: (...) Sigh. I can't forsee our Autonomous Robotics course buying 15 copies of IC 3.x or greater until it supports case/switch. It's the only feature that our students using freeware 2.81 really complain that (...) (26 years ago, 28-Aug-98, to lugnet.robotics.handyboard)
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| | Resend: problems with main()
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I posted earlier in the week about having a problem with the SRAM. I have determined that there is not a problem with the SRAM on the handyboard. The problem is that "main()" is not executing on reset like it is supposed to. The program that I am (...) (26 years ago, 27-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Analogue sonar design.
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Hi, There is another way to get the Polaroid sonar unit. And that is to find an old Polaroid camera. That's the hardest part but allot of people bought them and are not using them any more. When you open it up there will be the Sonar board complete (...) (26 years ago, 27-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Steppr motor pulse problem
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Phillip and others, To this excellent exposition I would change only one thing: (...) Change this to : "Write this pattern down neatly IN YOUR ROBOTICS NOTEBOOK." One of my professors at school noted that the most important thing he learned in (...) (26 years ago, 27-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Steppr motor pulse problem
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Phillip First step is to put a piece of tape on the shaft so that you can clearly see the shaft turn. Next determine what kind of motor you have (you have probably already done this). Get an ohm meter and determine which wires are connected to (...) (26 years ago, 27-Aug-98, to lugnet.robotics.handyboard)
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