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So far nobody has mentioned using a compass to control the 'bot's heading. (URL) Nick (...) (27 years ago, 29-Jun-99, to lugnet.robotics.handyboard)
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| | RE: LM35 Temp Sensor
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The output pin of the LM35 gives you the ambient temperature in 10mV/degree C directly. The 47k pullup resistor will form a voltage divider with the output. You either have to do some conversion (complicated) or eliminate the pullup (easy).... Paul (...) (27 years ago, 29-Jun-99, to lugnet.robotics.handyboard)
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| | RE: Moving Straight
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Our first challenge was to get our robot to move ahead straight. There seemed to be a difference in the motor torques. We used shaft encoders and compared the counts every 200 to 500 milliseconds. Slowing down the motor that had a higher count, for (...) (27 years ago, 29-Jun-99, to lugnet.robotics.handyboard)
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| | RE: Moving Straight
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Many people use trial and error to come up with a wheel differencial factor that should always be applied so that even without looking at the encoders the robot should move pretty straight. If you do the compensation on the fly that is OK but during (...) (27 years ago, 29-Jun-99, to lugnet.robotics.handyboard)
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| | Re: Moving Straight
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I use the 9 gram Piezo gyro in my Hand Launch Glider to keep it moving level despite strong wind conditions. Could you use that in your robot as a "Rudder" input? The 9 gram Piezo gyro costs about 9,500 yen here in Japan. That is about $80.00. I (...) (27 years ago, 29-Jun-99, to lugnet.robotics.handyboard)
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