 | | Re: Rotation Sensors - slightly dissapointed... —Michael Gasperi
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| | | (...) Because the LEGO Rotation sensor is a powered type, it might be slightly sensitive to battery voltage. I wonder if you notice the skipping is worse with older batteries. Also, the problem might be aggravated by long wires. Does the skipping (...) (25 years ago, 25-Feb-00, to lugnet.robotics)
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| | | | | Re: Rotation Sensors - slightly dissapointed... —Iain Hendry
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| | | | | Michael Gasperi wrote in message ... (...) while (...) I was using an AC adaptor and no long wire (just the small ~15cm cable connected right to the port). Iain -- tokama (URL) UIN 5362826 AIM Linjerflyg h e n d r y j r AT o x f o r d DOT n e t (...) (25 years ago, 25-Feb-00, to lugnet.robotics)
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| | | | | Re: Rotation Sensors - slightly dissapointed... —Ben Jackson
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| | | | (...) If you check the legOS group you can see my posts with some extensive analysis of the sensor values for the rotation sensor. There is a patch to make legOS less sensitive to voltage fluctuations and one to debounce the input (which is what (...) (25 years ago, 25-Feb-00, to lugnet.robotics)
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| | | | | | RE: Rotation Sensors - slightly dissapointed... —Ralph Hempel
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| | | | | (...) Ben, I have to go back over the changes, but does legOS sample at the same rate as the standard firmware? The standard rate is about 333hz, so debouncing would likely reduce the effective rate to 166hz, which limits the max rate at which the (...) (25 years ago, 25-Feb-00, to lugnet.robotics)
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| | | | | | | Re: Rotation Sensors - slightly dissapointed... —Ben Jackson
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| | | | | | (...) analysis (...) legOS (...) is (...) would (...) I believe it is. I tried setting the sampling rate to high speed and it just didn't work at all. Yes, debouncing the input halves the effective clock frequency, but the problem is that (...) (25 years ago, 27-Feb-00, to lugnet.robotics)
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| | | | | | Re: Rotation Sensors - slightly dissapointed... —Robb Greathouse
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| | | | I've used old mouse rotation sensors in non-lego projects with some success. They employ a laser counter. The device can be easily connected to a basic stamp. If the counter disk is sealed against contaminantion it works well. Robb, ----- Original (...) (25 years ago, 28-Feb-00, to lugnet.robotics)
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| | | | | | RE: Rotation Sensors - slightly disappointed... —eMKa
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| | | | Mmmm, your triggering some thoughts. A mouse is a pretty simple (serial) device Imagine having a robot which has a mouse-ball in a DUPLO block carried over the surface In this way you could record the path the robot has taken. Doing a bit of (...) (25 years ago, 29-Feb-00, to lugnet.robotics)
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