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Have anybody link a TI-92 (Texas Instruments Calculator). Because I fail on my first try. And only got a cero value form the TI-92. Any Help? Thanks Daniel R (24 years ago, 11-Sep-00, to lugnet.robotics.handyboard)
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| | IR Reception
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I posted this question previously but got no reply so I am trying again. I have mounted the IS1U60 infrared demodulator on to the HB but I have realised that it can only recieve from a particular direction. Is it possible to mount another IS1U60 by (...) (24 years ago, 11-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Encoders
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IC can't sample the A/D converters that quickly. As long as you're generating a nice squarewave you could connect it to one of the input capture pins and write a custom interrupt routine to maintain the count. --Chuck (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Encoders
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Since some are on the subject of encoders, I have a problem I would like to get help on. I have a hall effect sensor dutifully counting pulses on a gear. The gear will rotate from 800-4000 RPM. I am running the signal through a 741 OP Amp to (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Encoders, what are you using?
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Jerry, go to: EE 401 - Electrical Engineering Design Course - 1999/2000 then to shaft encoders they have 16, 32, or 64 sections you can print out. bye, Terry G. ----- Original Message ----- From: "Jerry Normandin" <jerrynormandin@ne.m...iaone.net> (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | I fixed my slop!
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Hey.. I added a quick reverse drive to the moter.. it turns out my slop was the drive system coasting! I added brake and I am more accurate now!!!!!!! (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Encoders, what are you using?
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Hi, My homebrew quad hall effect encoder works, I'm learning from it. I get @ 1/4" resolution so there's plenty of slop. I can have the robot pace back and forth on a straight track for 6 passes or so then I start to veer off track. So I guess it's (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Robot Program for Rover so far...
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Hi everyone. Well I decided to go with a Quad Hall Effect encoder. I mounted 4 very small magnets on my 1" plastic drive gears and used the Hall Effect switch that Fred recommended. Here's the code I have and the results! For a 180 degree turn I get (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Sensor supply voltage & PC communication
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hi. you can certainly tap the 9.6v batt output to power the sensor (use J13), but make *sure* that the sensor does not put out more than 5v, or you'll blow your analog inputs. if you're not sure, put a 1K resistor in series with the sensor's output (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | External Motor Power
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I have read the FAQ on cutting the trace that supplies motor power from the Handyboard battery so you can use another power source but it doesn't address the issue of what to do if you have an expansion board. I am sure someone must have done this (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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