 | | polaroid transducers
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does anybody out there have any schematics for using the polaroid transducers on the handyboard, I have two such transducers, but havint got a clue how they work or how to connect them to the handyboard. I'm also very interested in what Bill Richman (...) (27 years ago, 21-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Ultrasonic Rangefinder
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I've used the sonar board and transducer from several Polaroid "Pronto Land Cameras" for just that purpose in that past. I don't know how these compare to the Spectra; I would assume they're similar if not identical. There was an article in an old (...) (27 years ago, 21-Sep-97, to lugnet.robotics.handyboard)
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| | Ultrasonic Rangefinder
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Did anyone ever opened up a Polaroid Spectra Instant camera? I did. The sonar rangefinder is almost identical to the Polaroid 6500 exept there are some problems that I encountered 1) BLNK and BINH have no efect on the ECHO output 2) The ECHO signal (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: fun under the sun...
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From the "other" mailing list I'm on (BEAM robotics), try: www.solarbotics.com They have a lot of parts and information for solar powered robots. I've bought stuff from them and had good experiences. (Although getting a flimsy bubble-pack envelope (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | fun under the sun...
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Hey folks looking for a cheap source of solar cells... I wanna make something around 8 volts and between .5 to 1 amp The load will be that of a "modified" rc car motor (ball bearings, slot armature, 15 winds) Any help would be greatly appreciated (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Pseudocode
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I think what you may be wondering is how does the code do all this at once instead of sequentially as normal code runs. If you are not wondering this then I'll tell you anyway. The awesome feature of the handyboard is the pcode. The pcode is a (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: LEGO motors and the handyboard ?
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Cutting the trace is only ONE solution! I had the same problem and did not consult the handyboard FAQ on the web. This FAQ gives you some options if you don't want to damage your board. Another solution is to use your own custom H-bridge, or do like (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Pseudocode
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(...) One thing to remember: the input is the world (through the sensors) and the output are the robots actions on the world. A program outline repeat turn on drive motors repeat read wall/obstacle sensor until sensor reads an obstacle stop motors (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Re: LEGO motors and the handyboard ?
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The HB gets reset due to the large current drawn from the motors. You should separate HB and motors power supply. What you need is to cut the trace (+ve motor power share with HB main power) nearby J13. Then, apply motors power supply to J13 and (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Pseudocode
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Hello, Im very new to the list and to the entire concept of all of it basically. but- i'll cut to the chase (its breif) Just learning c programming i ran across a chapter in the book which explains pseudocode and its impact. I dont know how many (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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