@iBradleyAllen Each sound pattern peaks in a specific direction which reflects a physical measurement (tilt error, magnetic field, demodulated signal). This is useful while setting up the system.
I edited the digital audio onto the video, hence the sync problems. The same clip with in-sync analog audio can be seen at the end of the video.
On another note do you, or does anyone know if the Wii Tony Hawk skateboard with usb dongle can become one of these kinds of input devices that would make the software on the screen move at the same time as the board?
Hmm. An interesting experiment... Would it work with a Wii motionplus device? Seems like pretty similar stuff at a hardware level...
(To be honest, I've had a hard time finding accurate information on what hardware a playstation move controller contains, so I don't know what this experiment depends on as such.)
@KuraIthys The WMP gyros seem to have comparable performance. On the one hand, the IR sensor would provide a good reference for locating true north. On the other hand, the resolution of the accelerometers is poor, so it would be hard to make the turntable perfectly horizontal using the technique we developed for the Move.
@pabrdotorg I think I can see what you're getting at. The Gyroscopes on the WMP report 14 bits, and in 'slow' mode this is about 440 degrees/sec. But the accelerometers are 10 & 9 bits at best.
If the Move reports 16 bits for each, that would explain a few things (above and beyond the differences between the IR tracking and the PSeye based tracking.)
So, essentially, you're saying it could work, but some things would be a bit more difficult to set up? (And/Or less precise)
@KuraIthys Yes, it is definitely worth trying. And since the WMP gyros are from a different manufacturer, results could be surprising in terms of noise spectrum, bias drift, sensitivity to magnetic fields and linear accelerations, etc.
@Mogultech Tectonic plates shift very slowly (a few centimeters per year); you can't measure that with inertial sensors. Occasionally this triggers an earthquake, which is what seismographs detect. Game controllers, laptops and mobile phones have accelerometers which can detect (strong) earthquakes - see qcn.stanford.edu
Nice! Now I can make a "non-clock based" automatic calendar with mi PS move! haha joke... That's some cool artefact you made. Pretty clever. (I'll give you... 8 points out of 10)
Maybe it's just me, but I like this video much more than any Youtube video of someone getting hit in the nuts. I could watch stuff like this all day long.
thats some confusing stuff, well done figuring all that out. If 2012 hits and the poles shift, assuming you still have power could you find the "new" geometric north pole?
@Sebas1132 If you were locked in an underground bunker then yes, a gyrocompass would be the way to go :-) Otherwise, simply take a long-exposure photograph of the night sky; that would be more accurate.
This is so cool, I never thought you could use gyros for something like this. Also how you compensated the detection range and earths magnetic field - just awesome :D
@jimatjtan The accuracy is not that impressive, but hopefully the sources of error are identified and eventually someone will steal the concept and implement it with better hardware or smarter math. Also, thanks for your help with the sixaxis interfacing, which was a precursor for this.
Interesting, but what is the beeping sound at the start? and why is it barely out of phase with the rotation?
iBradleyAllen 11 months ago
@iBradleyAllen Each sound pattern peaks in a specific direction which reflects a physical measurement (tilt error, magnetic field, demodulated signal). This is useful while setting up the system.
I edited the digital audio onto the video, hence the sync problems. The same clip with in-sync analog audio can be seen at the end of the video.
pabrdotorg 11 months ago
@pabrdotorg ok;
On another note do you, or does anyone know if the Wii Tony Hawk skateboard with usb dongle can become one of these kinds of input devices that would make the software on the screen move at the same time as the board?
iBradleyAllen 11 months ago
@pabrdotorg could you use a bowl of water to set the "levelness" of the thing?
iBradleyAllen 11 months ago
Hmm. An interesting experiment... Would it work with a Wii motionplus device? Seems like pretty similar stuff at a hardware level...
(To be honest, I've had a hard time finding accurate information on what hardware a playstation move controller contains, so I don't know what this experiment depends on as such.)
KuraIthys 1 year ago
@KuraIthys The WMP gyros seem to have comparable performance. On the one hand, the IR sensor would provide a good reference for locating true north. On the other hand, the resolution of the accelerometers is poor, so it would be hard to make the turntable perfectly horizontal using the technique we developed for the Move.
pabrdotorg 1 year ago
@pabrdotorg I think I can see what you're getting at. The Gyroscopes on the WMP report 14 bits, and in 'slow' mode this is about 440 degrees/sec. But the accelerometers are 10 & 9 bits at best.
If the Move reports 16 bits for each, that would explain a few things (above and beyond the differences between the IR tracking and the PSeye based tracking.)
So, essentially, you're saying it could work, but some things would be a bit more difficult to set up? (And/Or less precise)
KuraIthys 1 year ago
@KuraIthys Yes, it is definitely worth trying. And since the WMP gyros are from a different manufacturer, results could be surprising in terms of noise spectrum, bias drift, sensitivity to magnetic fields and linear accelerations, etc.
pabrdotorg 1 year ago
Sorry for the dumb question, but can this also be used to detect earths tectonic shifting? Much like a seismology device?
Mogultech 1 year ago
@Mogultech Tectonic plates shift very slowly (a few centimeters per year); you can't measure that with inertial sensors. Occasionally this triggers an earthquake, which is what seismographs detect. Game controllers, laptops and mobile phones have accelerometers which can detect (strong) earthquakes - see qcn.stanford.edu
pabrdotorg 1 year ago
@pabrdotorg Sweet! So in such then what you are doing can be used to say control a car? a la Google self driving/better than GPS kind of car?
Assuming it can all be put into a small enclosure & somewhere on the vehicle?
Mogultech 1 year ago
Nice! Now I can make a "non-clock based" automatic calendar with mi PS move! haha joke... That's some cool artefact you made. Pretty clever. (I'll give you... 8 points out of 10)
Bucketchico 1 year ago
Or you can stack strips of paper .... o.0
Normally I don't quote stuff but this is just awesome.
Razorblade62 1 year ago
Maybe it's just me, but I like this video much more than any Youtube video of someone getting hit in the nuts. I could watch stuff like this all day long.
(Damn it! Now they know I'm a closet geek...)
kingdomofchrissmith 1 year ago
thats some confusing stuff, well done figuring all that out. If 2012 hits and the poles shift, assuming you still have power could you find the "new" geometric north pole?
Sebas1132 1 year ago
@Sebas1132 If you were locked in an underground bunker then yes, a gyrocompass would be the way to go :-) Otherwise, simply take a long-exposure photograph of the night sky; that would be more accurate.
pabrdotorg 1 year ago
This is so cool, I never thought you could use gyros for something like this. Also how you compensated the detection range and earths magnetic field - just awesome :D
derdekar 1 year ago
Impressive!
jimatjtan 1 year ago
@jimatjtan The accuracy is not that impressive, but hopefully the sources of error are identified and eventually someone will steal the concept and implement it with better hardware or smarter math. Also, thanks for your help with the sixaxis interfacing, which was a precursor for this.
pabrdotorg 1 year ago