 | | Re: walker that turns?
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(...) it? ¡hola Horacio! Months ago I built a robot that used just two legs to walk, moving its own center of gravity from one leg to the other. It was actually unable to turn, but someone sugested that I could provide it with turnable legs for (...) (26 years ago, 2-Nov-99, to lugnet.robotics)
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| | Re: Time available during 1 kHz system interrupt?
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(...) Mostly PWM will get jerkier. If you sit to long in there and the motors happen to be 'on' then you can go faster than you would like :-) You also "lose time" in the sense that msleep is no longer accurate so there are issues with tasks that (...) (26 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Time available during 1 kHz system interrupt?
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The controls are spread across a couple of files, mainly in libhb.c we get /* pulse width modulation control: if off, all motors run at full speed if on, speed bytes are used to determine motor speed */ void system_pwm_on() {bit_set(0x39, (...) (26 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
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| | Re: legOS-0.2.1
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Hi Jeffrey, that's an OS issue - your host system should define O_ASYNC. Some older systems define FASYNC instead, try that one. You can work around this more elegantly, too: #ifndef O_ASYNC #define O_ASYNC FASYNC #endif And hope for the best. (...) (26 years ago, 2-Nov-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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| | Re: Categorizing uploaded robot images on legomindstorms.com
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You may wish to consider a combination of a main hierarchical taxonomy (mobile->wheels->...) with tag keys for attributes (contains homebrew sensor). User may search both ways. Eric (26 years ago, 2-Nov-99, to lugnet.robotics)
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