 | | RE: Navigation using landmarks (Was: Re: lasers and RCX)
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A Killough platform may have 3 motors, but it operates in a X-Y coordinate plane, not X-Y-Z. The camera is looking for pattern shifts horizontally or vertically, not radially within it's field of vision. As long as the axis of the spin is not (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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| | Re: HOWTO Demo.c
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If I understand this correctly (which I doubt) each task you start, has a higher priority, and they all have a higher priority than the 'task_swapper' task. Try setting all the priorities the same. Like to 1. See what that does. (...) (23 years ago, 9-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: HOWTO Demo.c
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The code I have taken out of HOWTO.ps (URL) given at the end of the document under the name Demo.c I have fixed some compile time errors (like mismatching process ids in the kill call, the function for getting button state is dbutton() and not (...) (23 years ago, 9-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: HOWTO Demo.c
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I'm no expert, but I can try to help you figure it out. Let's start with something simple. What version of LegOS are you using? How are you starting the 'task_swapper' task? What is in the 'motor_driver' task? At one time, when I was working with (...) (23 years ago, 9-Jul-02, to lugnet.robotics.rcx.legos)
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| | HOWTO Demo.c
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Need Help, if someone has faced such a problem or knows the fix please do reply. In the legOS Howto their is a demo code demo.c which has some task switching examples I am having trouble with the following piece of code int task_swapper() { (...) (23 years ago, 9-Jul-02, to lugnet.robotics.rcx.legos)
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| | New BBRC Release!
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Hello All, We've released a new version of BBRC on battlebricks.com: (URL) software allows someone to control multiple robots from their PC with USB GamePads. New features in this release include: * USB IR Tower Support * Keyboard interface If you (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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| | Re: Several hardware questions.. Laser link Hardware expansion n' more
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(...) In my system (one RCX and three Scouts), I had one 'master' and three 'slaves'. The rule was that no slave is allowed to talk unless first addressed by the master. I've finally gotten around to writing up this setup and putting it on the web. (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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| | Re: optical mouse chips as vision sensors?
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(...) Yes - mathematically, you could still do it with the mouse sensor off to the side of the robot (but not with it dead center between the wheels) - however the sensitivity of the chip to small lateral movements probably wouldn't be enough to (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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| | Re: optical mouse chips as vision sensors?
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(...) The mouse's camera chip tells you how fast the beast is moving forwards/backwards and how fast left/right - as two separate sets of numbers. If you mounted it on a boom (say) six inches ahead of the wheels of a typical two-wheel-plus-caster (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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| | Re: Navigation using landmarks (Was: Re: lasers and RCX)
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(...) Yes - I was thinking of some kind of spring-loaded arm pressing the mouse's underside against the ground. (...) For a Killough platform, you have a fundamental problem. That type of drive has three degrees of freedom (well - it *ought* to have (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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