 | | IR question
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Hi Max Davies and everyone, In your documentation (irinfo.txt), you said that we need to disable the IR input interrupt routine before transmitting another signal, what is the reason behind that ? As the IR input and output are both interrupt driven (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | L.E.D. question.
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What are the L.E.D. voltage ratings for the L.E.D's on the interface board I purchased one(at Radio shack) with a rating of five volts. Which should be O.K right? any help would be appreciated. I have to improvise to get such components cheap. Thanx (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Shaft encoder sensors...
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Kathy, Digi-Key has three kinds. The first two look like the "Mobile Robots" type: QRB1114QT-ND $1.58 QRB1134QT-ND $2.83 The third one looks like a much more compact arrangement: QRD1114QT-ND $1.50 These are on Page 552 of the January-March catalog. (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Shaft encoder sensors...
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(...) The Hamamatsu P3062-01 IR photoreflector mentioned in MR was discontinued and replaced by the P5587. This chip has the identical pinout and dimensions as the original. I ordered several from Hamamatsu last year but they are pricey (~$7/ea) in (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | photoreflective sensors
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Kathy($B!)(B) wants photoreflective sensors for shaft encoder. How about the products of Toshiba? See (URL) ***...*** takatsu@isenshu-u.ac.jp School of Science and Technology, Ishinomaki Senshu University 986-8580 Ishinomaki, Miyagi, JAPAN (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | Shaft encoder sensors...
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Can anyone help? My team is trying to get a shaft encoder to work, but cannot find a chip that will work correctly to count the black and white stripes on the wheel. We would like to use a chip which can be connected directly to the digital inputs (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | Stupid Sonars
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I have a extremely complicated two polaroid sensor set up going on... I had a diode connected to each of the ECHO lines so that I can combine the two lines together... However, no signal passes through this setup... However, I have validified the (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | Timer display
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Hi, I would like to display a clock on the LCD display using the real-time interrupt of the 6811. But it does not seen to work at all. Does anyone have done a similar clock on the handyboard ??? Regards, James (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR output
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In response to: (...) Could a hardware expert (Fred?) please give a more definitive answer to this? What value resistor should be used? After extensive IR use with just an IR led and no resistor my transmission circuit eventually died... I guess I (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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| | lib_rs.lis, nevermind.
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Sorry, I wasn't thinking, doh! (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
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