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 | | Sonar and the handyboard
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| I need to attach an underwater sonar ranger to the handyboard but I cannot figure out how. Does anyone have any experience with this? One question that I have is if sonar transducers other than the polaroid 7000 unit can be attached to Polaroids (...) (25 years ago, 3-Feb-00, to lugnet.robotics.handyboard)
| | | | | Re: Analog/Digital IO
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| Maxim sells a chip that I have connected to the parallel port on my PC and it seems to work well. I got the design from an article in Dr. Dobbs. The article was on using Linux to collect data. The author of the article has a book which has the (...) (25 years ago, 3-Feb-00, to lugnet.robotics.handyboard)
| | | | | RE: Analog/Digital IO
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| Is that how it works? I remeber a time when some students were using a joystick for a project and recall them dealing with some sort of PWM. As to whether they were the joystick position signals, I'm not entirely sure. (...) This message is for the (...) (25 years ago, 3-Feb-00, to lugnet.robotics.handyboard)
| | | | | Re: Analog/Digital IO
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| hey -- how about a game card! that gives you digital (joystick buttons) and analog (resistor readings). fred In your message you said: (...) (25 years ago, 3-Feb-00, to lugnet.robotics.handyboard)
| | | | | Re: Analog/Digital IO
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| (...) For digital values, you can use a parallel port card, or even handshake lines on a serial port. For analog, you can again use a parallel port, and hook up an external A/D chip. As long as you're not trying to get too many bits of resolution (...) (25 years ago, 3-Feb-00, to lugnet.robotics.handyboard)
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