 | | Re: DC VS SERVO
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That still does not tell me the difference between how they are diven. For instance, can you use the 4 motor ports to drive a servo motor? If not why? Any help appreciated. Chris Rhodes (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Radio Shack Tape Measure
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There were two enthusiasts who did hacks on the Radio Shack Tape Measure, Jonathan, back in February of 1994. Their names are Thomas Rowley and Brian Van Mondfrans. Brian was at Thurston High School in the Puget Sound area back then so you might (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Infrared Optosensors
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I've had pretty good luck getting up to around 2" by using a standard IR LED and standard IR phototransistor, modulating the IR LED in software, and looking at the analog value returned from the phototransistor like so: { int refl; led_on(); refl += (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Radio Shack Tape Measure
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Can anyone point me to an article on connecting the Radio Shack Tape Measure to the MIT 6.2 controller board. Also, has anyone used this device with either the miniboard or the handyboard. thank you ___...___ ___...___ Jonathan Swaby 305 Sparks Bldg (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Infrared Optosensors
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1/2" is actually pretty good range for a basic reflectance sensor. try using them in the analog inputs -- you should get readings that let you read out to about 1". to get better than that, you need a modulated signal, like Pandit has described. (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Re: Infrared Optosensors
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Hi Brian, I believe you are trying to implement the proximity sensor for object avoidance or collision avoidance, correct ? I believe the QT1114 is designed for the range the you have found. The spec. of the part also indicate the very near range (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Problems with Smoot-PWM
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Hi all, i have problems during download the new smooth-pwm routine into my handyboard. All times my downloader stopped after few seconds with an error message "EOF after 1xxx Bytes ....." I´m using a macintosh (PPC 4400) and use the 6811 download (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Infrared Optosensors
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I interfaced 3 infrared optosensors to the digital inputs on the handyboard. I'm a little dissapointed in their performance however. The only time they give a reading of "true" is if they are about a half an inch or closer from the target. Any (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | Re: DC VS SERVO
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Chris, See pages 20 and 21(pdf pages 25 and 26) of the handyboard technical (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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| | DC VS SERVO
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HELLO, MY NAME IS CHRIS RHODES AND I AM CONFUSED ABOUT THE DIFFERENCE BETWEEN A SERVO MOTOR AND A DC MOTOR. THE HANDYBOARD LITERATURE SAYS THERE ARE THE 4 DC MOTOR OUTPUTS AND 1 DIGITAL INPUT THAT CAN USED AS A SERVO OUTPUT. WHAT IS THE DIFFERENCE (...) (26 years ago, 4-Jun-98, to lugnet.robotics.handyboard)
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