 | | Re: Handy board help
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You can build a stepper motor controller on a separate circuit board, then remove the motor control IC's off the handy board and use the output signals to control your stepper. Will have to write a program to run it. you will need a min of 4 outputs (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: PWM and encoder
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The nonlinearity has to due with the characteristics of your motor. You will find that a single step of power at the low end has a greater effect on the speed than a single step at the high end, as the motor approaches its top speed. The (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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The reason you don't need a pull up resistor for the Handy Board is because the Handy Board has built in 47k pull up resistors on the digital inputs! -----Original Message----- From: MAR ERICSON <mar@cooper.edu> To: Darkman <lroska@cyberus.ca> Cc: (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | IC stack problem
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Hello everybody, Is something wrong with this code or is it IC? { int a[4][4], i; for (i=0; i<4; i++) { a[i][i]=i; } } When I type this at the IC prompt it complains: Downloading 79 bytes (addresses C200-C24E): 79 loaded COMPILER ERROR!: 2 extra (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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well....I might be the way you are powering the sensors ??? Maybe luck ???? :)))))) Actually I don't why you don't need any of those supporting parts. A short question ...For what range are you using the sensors (are you using the binh signal) ?? We (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Digitial input problem
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Hi all, i have built a handyboard. It works fine. But on Digital PIN 9 "PAI" i got allways high level (1) during test via "hptest.c". I think i haven´t any soldering problems. That´s wrong ??? bernd klein (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | PWM and encoder
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Hi, i have some questions about PWM and encoder. I made following tests: 1) Speed : motor(0,100) my encoder count f.e. 20clicks / per second 2) Speed: motor(0,50) my encoder count f.e. 15clicks / per second 3) Speed: motor(0,40) my encoder count (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: IR Transmit ?!? HELP
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(...) Did you follow the instructions in the HB Assembly debug? at (URL) says: Output Stage If LED9R fails to light after the poke command is issued, trace the following progression of signals. Please refer to the infrared output schematic: * 6811 (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | IR Transmit ?!? HELP
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I recently assembled a Handy Board, everything is perfect except for the IR Transmitter. The IR Tx LED does not light. It is not the LED itself because I replaced it. I can't seem to figre out what's wrong. Please help. Thank You Peter Eacmen (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | To Prof. Fred Martin: Neat!
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Hi, I saw your robot at the Trinity fire fighting contest last Sunday. It was neat, and very animate. I was curious to know if you had figured out why it did what it did during your first run (?). And, what type of sensor were you using on the rear (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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