 | | confirmation of Cheap Lego gear motors
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Hey, you're right! I just ordered a couple and they said they were in stock I'd get them in 3 or 4 working days. ---...--- (...) item (...) only (...) that (...) know. (...) (27 years ago, 4-Mar-98, to lugnet.robotics.handyboard)
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| | Cheap Lego gear motors
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NEWS FLASH! Any of you who, like myself, have been waiting for Dacta to deliver (some time later this month) the Lego Technic 9V motor with gear reduction at $24.50 each might want to consider cancelling your order, because Lego Shop-At-Home (...) (27 years ago, 4-Mar-98, to lugnet.robotics.handyboard)
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| | IR Sensors
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Hey! Im a high school kid playing around with a handyboard i got maybe a week ago. Do you guys know any reason why my IR sensors keep returning 255? I havent made the trip to Radio Shack to pick up an IR detector card yet, but Ive tried a couple (...) (27 years ago, 4-Mar-98, to lugnet.robotics.handyboard)
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| | (no subject)
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I am sorry, but I want my address to take off from the list because I got almost about everybody's mail. thanx, latu fifita (27 years ago, 4-Mar-98, to lugnet.robotics.handyboard)
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| | Re: V2X Compass
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Hello all: I played with the V2X a year or so ago, and found that virtually anything magnetic interferes with readings. I found that the wiring in my office created false readings when the compass was moved around, especially if close to the walls. (...) (27 years ago, 4-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Servo Question
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(...) I have a sonar mounted on a panning servo, and I just bought an el-cheapo Cirrus CS-50. (It is functionally equivalent to a JR/Hitec JR-507 or HS-300). It works fine, although it is a noisy little bugger (but other servos don't seem much (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | robot contest at Penn State
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Hi All, The Penn State Abington College (Abington, Pa -- Phila., PA suburb) will host a preliminary fire-fighting robot contest on Sat, April 4, 1998 at 3pm. The fire-fighting contest is based on rules developed by Trinity College Fire-fighting (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Servo Question
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I've had very good luck with the Cirrus CS-70 which is basically a Futaba S148 replacement. It costs less than $10 and is available mailorder from Hobby Shack (800) 854-8471. I've modified a bunch of these to act as wheel drive motors for small (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Servo Question
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To anyone who can help: I wish to setup a panning sensor array for my platform using an RC servo, and I have some questions on experiences with servo brands. I know that Futaba servos are well respected, but they are also expensive. Has anyone had (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | LCD
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Can anyone suggest a good place to get a "bolt in" (I'm a car guy!)LCD that fits the handyboard nicely?? Also , does anyone know of a good parts supplier in Canada??? my local supplier can't supply me with some of the stuff... thanks Owen (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | 68HC11S IN THE UK
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Hi everyone.. Okay, today's million dollar (or pounds actually!) question is ... WHERE THE HECK CAN I GET 68HC11's (A1) from in the United Kingdom?? Any suggestions would be much appreciated. Thanks -Dave [daveh@liteon.co.uk OR (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Multiplexor Question
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Ed, I don't understand your response, but it sounds interesting. Can you elucidate? Stephen stephen.michael@mci.com (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Multiplexor Question
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My $0.02 Transducers poled in sequence can us a count to four (or more) circuit/chip. One digital output can be used to advance the count. (...) ---...--- Ed Spike (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Several different questions
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Hello everybody, I'm a new owner of the handy board and I have sereval problems to use the outputs and, as I'm new on the mailing list, I may ask questions already asked before or stupid questions so I apologize in advance. Today, I have several (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Re: V2X Compass
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Bill, I have not been able to try that with the v2x onboard the bot so far, every time I try to load anything while the v2x is running my handyboard wants to crash. Someone out there must have a code that they would be willing to share with some of (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Multiplexor Question
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You get 4 SPI output digital ports in the HB. Read the section in the FAQ about the HB's digital outputs. These 4 can be used to select your transducer. You can pull one motor driver chip and get 2 more digital outputs. Kent has routines that uses (...) (27 years ago, 3-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Multiplexor Question
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(...) I notice that Adam's circuit uses all 4 available SCI outputs to select the transducer, but the sonar board itself requires two of them already. Why not just get a 2-to-4 line demultiplexor, and use the remaining 2 SCI outputs to select the (...) (27 years ago, 2-Mar-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Multiplexor Question
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(...) Ive never done this before, but couldnt you do this? Buy a multiplexer that will take 2 outputs and multiplex it to 4 outputs, since you will only be driving one at a time. To each individual output of the multiplex, wire the power to one (...) (27 years ago, 2-Mar-98, to lugnet.robotics.handyboard)
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| | Sonar Multiplexor Question
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To anyone on the list: I would like to drive 3-4 transducers from a single Polaroid sonar ranging unit. Adam Cox posted a circuit for doing this on the HandyBoard page -- I have a few questions regarding this and possible alternative solutions. Has (...) (27 years ago, 2-Mar-98, to lugnet.robotics.handyboard)
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| | Re: V2X Compass
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I have a question for you, how much does the compass deviate when the motors turn on. As an ex-sailor, one of the major consideration in using magnetic compasses is deviation, and on a small bot, the deviation would vary due to the changing (...) (27 years ago, 2-Mar-98, to lugnet.robotics.handyboard)
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