 | | Re: IR
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(...) I am not there with you obviously so I cannot see your exact situation but when I was first playing around with the IR detectors (same kind, 38KHz from radio shack) I had the same problem. I finally tracked it down to my IR clock being way off (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | IR
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Hello all, I've been playing with IR proximity sensors, and wonder if anyone can provide some suggestions. I hooked up an IR LED (Radio Shack 'high output IR LED') to the Handyboard's IR output with a 330ohm resistor in series (the smallest value (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Hi Joseph, No, I have never had any problems with Digital Micro Systems. Actually, I am pleased with them. I ordered an assembled board a few months back and got the board on time. Later on I was suspecting something wrong with the board and I had (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Well, It works! :)
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Howdy all, They say imitation is the sincerest form of flattery- Thank you Fred Martin for designing such a cool board like the Handyboard! I got one last summer hopefully to be one of the CPU's in my robot- but alas it didn't have enough I/O ports (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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I have had a bunch of problems with them too while trying to get some replacement parts from a kit they sold me...... I have e-mailed and called and yet never given a response........ (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: Compiler errors.
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I really don't know what the problem with your compiler is. Maybe it's the wrong one for your programming language or for the board you're using. In the version of IC I program with, the program would look more like the following. Maybe that can (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | purchasing IC 3.1?
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Is there anywhere I can purchase IC 3.1 via check? I'm not the (un)lucky owner of a credit card, and paying by check would make things a lot easier for me... ---...--- Jeff Keyzer UCSD EE Major jkeyzer@ucsd.edu (URL) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Compiler errors.
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I am still getting a strange compiler error and I can't figure it out. The exact error is: Compiler error! 62 extra bytes left on board stack Sometimes the number of bytes is more and sometimes less. I'm sending along a copy of the code that is (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: IR signal
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Sounds to me like your LED is just not focused straight ahead. I found that sticking the IR LED in a Radio Shack panel mount LED holder (cat no 276-080a) worked the best for focusing the beam of IR. I had tried soda straws and other things, but the (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: buying Chips
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(...) I just ordered two 68HC11A1FN's today from B.G.Micro for $6.95 each. 62256 32x8 static ram's for $2.99 each. www.b.g.micro.com Terry Gathright 669@worldnet.att.net (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | 6500 Sonar and HandyBoard
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Kent, I read your quick explaination of how to connect the Polaroid 6500 sonar board to the HandyBoard, and I have a couple of questions.... Mainly, you mention that the INIT signal plugs into pin 9 of the second motor driver chip socket, and that (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Soldering...
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This is my case to. I had never soldered before, but it went off with out a problem. Thanks Fred!!!!! GO FOR IT and GOOD LUCK (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Has anyone built this homebrew sonar ranging board?
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Polaroid OEM Components Group (617)386-3965 $99 for two sets ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Everybody, DMSC is run by a nice guy named Prabal Dutta who posts frequently to this list and who isn't evil and as far as I can tell isn't over his head like some "vendors" in the robotics community have been. If you can send email, then sending (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Agreed, its a poor way to do business, 'specially for a small business man, I will not place an order with them again. My students, who need these boards to complete senior design projects and graduate are not happy. - Joe C. (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Has anyone built this homebrew sonar ranging board?
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(URL) a system similiar to the Polaroid 6500, but costs <$10 to build. Has anyone done it? Should I try it and share the results? (of course I should!) Does anyone see any major drawbacks after reading that, as compared to the Polaroid 6500? Is (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Joseph, (...) I have been trying for two weeks to get a hold of them. None of my messages (phone/email) are answered, and I am still waiting for the parts (high current H-bridges) to arrive. I suppose they still don't have them in stock, but it (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Digital Micro Systems
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I placed an order with Digital Micro Systems for two complete handyboard systems on 16-April-97. Delivery was promised by 5/12. It has not been received. Three phone calls to their answering machine (is this place ever open?) have remained (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Generic 68HC11 board question-
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w/o the ds1233, the contents of the ram will become corrupted during power-up or power-down of the 6811. an r/c could protect during power-up, but wouldn't reset the 6811 during power down. remember it's still trying to execute code as system (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Soldering...
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(...) Mirco >System, since I'm a bit tight with money. However, I'm a bit hesitant >about assembling the kit because I have no experience at all with (...) like the HB before (I'm a software type guy), but thanks to Fred Martin's concise (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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