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Hello fellow Mindstormers,
After a few hours lent over my oscilloscope, here is what I learned about
Lego rotation sensor : http://www.philohome.com/sensors/legorot.htm
You will find there theory of operation, schematics and a fix to the random
count problem at low rotating speed.
Enjoy !
Philo
www.philohome.com
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Message has 4 Replies:
 | | RE: Lego Rotation Sensor Internals - and fix
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| Philippe: This is a very good review of what goes on in the sensor. And of course the simple fix is wonderful. I know how much work even one page like this is and I would like to thank you for taking time to post it. (...) (23 years ago, 22-Jan-02, to lugnet.robotics)
| | | Re: Lego Rotation Sensor Internals - and fix
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| (...) Philo, I hope a LEGO Engineer sits in on this newsgroup and does something useful with your work. There has been a lot of 'traffic' here describing the problem in different ways, but you are the one who finally got to the bottom of it. Great (...) (23 years ago, 22-Jan-02, to lugnet.robotics)
| | | Re: Lego Rotation Sensor Internals - and fix
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| (...) Have you tested it at high rotating speeds to see if there is any adverse effects caused by the additional parallel capacitance? (just curious) Some great work there. I am currently in the same milieu with a rotation sensor that is (...) (23 years ago, 22-Jan-02, to lugnet.robotics)
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