[PD] reading suggestions for wii/sensor data conversion
Hi List I am a bit stuck with my ongoing experiments. What i am trying to do is to send acceleration (xyz or pry) data from the wii/osculator to pd/pmpd to have it visualized with some masses generated with pmpd. I would liek to simply generate some force in the x or -x dirction to move a mass. The data i get from the wii is i guess already accelleration and not absolute position, since i would liek to avoid using the ir- sensor bar. I am missing a mathematical trick there, any suggestions or hints for further reading. I was working with the mapping-abstractions, which are - as it seems - for any type of conversion. Thans very much Luigi ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] reading suggestions for wii/sensor data conversion
Luigi Rensinghoff wrote: I would liek to simply generate some force in the x or -x dirction to move a mass. The data i get from the wii is i guess already accelleration and not absolute position, since i would liek to avoid using the ir-sensor bar. One of Isaac Newton's laws of motion [1] F = m a force = mass * acceleration where force and acceleration are vectors I might be misunderstanding what you need, though. Claude [1] http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion -- http://claudiusmaximus.goto10.org ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] reading suggestions for wii/sensor data conversion
From what I understand about pmpd, it looks like you can send an force message to a mass object. As Claude says, F=m*a, so you can calculate the force to send to the object based on the object's mass and the acceleration data coming from the Wiimote. You will probably have to scale the signals coming from the Wiimote to use in your application. For example, if the acceleration on one axis is 542, you will have to decide what you want that to mean in your model. Also remember that gravity causes acceleration, so even if you aren't moving the Wiimote you will still detect accelertion. You may want to try to remove that from your calculations. I'm not sure if any of this is helping. I've been playing around with accelerometers a little bit lately, so I might be able to help you, but I'm still not sure I fully understand what you're trying to do and where you're running into trouble. andy On Wed, Apr 2, 2008 at 3:45 AM, Claude Heiland-Allen [EMAIL PROTECTED] wrote: Luigi Rensinghoff wrote: I would liek to simply generate some force in the x or -x dirction to move a mass. The data i get from the wii is i guess already accelleration and not absolute position, since i would liek to avoid using the ir-sensor bar. One of Isaac Newton's laws of motion [1] F = m a force = mass * acceleration where force and acceleration are vectors I might be misunderstanding what you need, though. Claude [1] http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion -- http://claudiusmaximus.goto10.org ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] reading suggestions for wii/sensor data conversion
Hi List I am a bit stuck with my ongoing experiments. What i am trying to do is to send acceleration (xyz or pry) data from the wii/osculator to pd/pmpd to have it visualized with some masses generated with pmpd. I would liek to simply generate some force in the x or -x dirction to move a mass. The data i get from the wii is i guess already accelleration and not absolute position, since i would liek to avoid using the ir- sensor bar. I am missing a mathematical trick there, any suggestions or hints for further reading. I was working with the mapping-abstractions, which are - as it seems - for any type of conversion. Thans very much Luigi ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
