 | | using relays to run a motor
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Hi Ive elected to use 2 relays to run a motor. Im going to put one motor on with the power coming in 'straight' and the other one in reverse of the first one: [RELAY 1] [RELAY 2] ++ -- -- ++ (power is inverted) |--------| |---...---| | \_______ | (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Lego 9V motors work well?
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[Greg Starr] spake unto the ether: (...) Performance-wise, they are okay (i.e., they are powerful enough). I don't like the short axle they have on them, though (compared to e.g. a Mabuchi motor with a LEGO 2x drilled axle Super-Glued onto the motor (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Lego 9V motors work well?
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What has been people's experience in using the Lego 9V motors with the Handyboard? I know they're overpriced, but they are easy to use... We've used small RC car motors etc. in our Lego robot course in past years, but some students have been looking (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | re: 9v lego motors
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Lego motors are OK ptrformance wise (if youre talking about small robots), but the cost is really bad. What I would recommend is taking surplus motors and superglueing them together to lego bricks. Especially for photsensors and switches. phil (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Interrupt for serial data
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I've decided to write an interrupt routine for the handling of serial data on the Handy Board. An example of an interrupt routine is given in the Handy Board technical reference. This works like a charm. I've modified it to use the SCI interrupt. (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | encoders
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Hello all, I am attempting to use the shaft encoder routines but am having trouble.When I try to load the file fencoder0.icb I get a message that ic cannot find the file.Any hints? Also I would like to know whether these routines count off one edge (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Sonar
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Yup. I loaded the sonar.c file and ran the sonar_display() routine. It just displays values that make no sense. The sonar doesn't click and the diodes get hot. After recieveing some mail from other, I have come to the conclusion that the diodes are (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | a scary story
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Just an interesting (or perhaps not) story about what just happened to me this week while putting my Handy-Board together. I was on the section where you put on the digital input circuitry, and all was going well so far - it loads pcode_hb.s19, (...) (27 years ago, 12-Feb-98, to lugnet.robotics.handyboard)
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| | 68HC11 modes
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Return-Path: <roneill> Received: by thorung.eeng.dcu.ie (Linux Smail3.1.28.1 #5) id m0y2kzc-000FSwC; Wed, 11 Feb 98 22:51 GMT Message-Id: <m0y2kzc-000FSwC@tho...ng.dcu.ie> Date: Wed, 11 Feb 98 22:51 GMT From: roneill ("Richard O'Neill (...) (27 years ago, 12-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Sonar
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Yes. It "clicks". I quess it's the part at the frequencies humans can hear. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the (...) (27 years ago, 12-Feb-98, to lugnet.robotics.handyboard)
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