 | | legOS timers
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Hi! Did anyone write any 'nicer' wrapper functions for handling the RCX timers? Or am I blind and can't find them? 8^) /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Light sensors
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(...) more light and is working.... Erm... it isn't really working - it exhibits the same 'inverted' behaviour, looking for a white line on a black background... /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Light sensors
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Hi! Maybe this is obvious for all experienced legOS users - I am displaying the values read from the light sensor on the LCD, and I get values of ~30 for light and ~520 for darkness... This seems very strange - is it the display wrong, or are these (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Firmware startup bug?
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I have replaced my batteries without erasing the firware several times. The trick is replacing the batteries one at a time with the brick turned off. You have then several (10 or so) seconds between each replace. If you leave the brick switched on (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Firmware startup bug?
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Probably related to the garbage on the lcd that you get when turning off the RCX with a sensor active: if there is a light or rotation sensor or a pressed touch sensor connected to the RCX when you download firmware legOS will crash immediately (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) That's one of the reasons I got mine. I was trying to make a simple balancer when I built the pendulum I described (with 4.5 degree accuracy). There were a lot of problems with my mechanism, but the overriding problem was that the 0 point (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) which (...) I added code to assume that 2 step transitions were 2 steps in the last known direction of travel. The results were MUCH worse than just ignoring those steps, as the current code does. This seems to suggest that the 2-step (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) I got a letter two days ago indicating that the two rotation sensors I ordered the first week in January are nicely on backorder and will ship in a month or so. This is similar to what I was told on the phone when I ordered them from Shop and (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) I tried hacking something like this into the old rotation sensor code, and it didn't go real smoothly, but is definitely a necessity (I think) if you want the sensor to handle very, very high speed apps. (...) I am. I'm almost tempted to steal (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor mystery solved?
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(...) What exactly do you intend here, Martin? I spent quite some time working on this over the summer and in the fall, and had a great deal of problems but also some success. I'd be happy to help you out with my experiences if you have some idea (...) (25 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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