DIY Head Tracker For A Tenner
- Thread starter Dead Fred
- Start date
very useful +1This would be very useful
I got a reply from Pocketmoon who hopes to release a new version of the UI tool in about 10 days time.
He will add the option to disable re-centering but will also fix re-centering so it takes scale into account too.
I found that currently. The lower your scale multiplier, the more aggressive the re-centering is going to be because there is less head movement being registered. With a high multiplier head movement is exaggerated enough to keep recentering to a minimum.
He will add the option to disable re-centering but will also fix re-centering so it takes scale into account too.
I found that currently. The lower your scale multiplier, the more aggressive the re-centering is going to be because there is less head movement being registered. With a high multiplier head movement is exaggerated enough to keep recentering to a minimum.
The drift compensation should remain valid so long as the orientation of the device is the same and ambient temperature is *roughly* the same (a difference of a couple of degrees doesn't seem to make much difference to me). But with the auto-recentering turned off it will be all the more important to get the drift compensation accurate.
To be honest, I think a device with it disabled will be more hassle, you'll be pressing that mapped button in Opentrack all the bloody time (well, you know what I mean). I think what's needed is the auto-centering feature is just toned down, so that it's not so immediate, but averaged out over a longer period of time. Easy enough a change
Ah. I'd assumed, because I'd re-flashed the modified sketch, that I'd need to do the drift compensation again.
I wasn't doing the compensation between altering the scale values, but only after the reflash.
I take it is isn't the case?
EDIT: Thinking about it, after the flash, the scale values had reset to 5 so isn't it the case that the drift compensation value would also have been reset?
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I guess the drift compensation value is also stored in EEPROM?
I didn't do the wipe tracker option as part of the operation. I just used the Arduino IDE to modify the sketch and upload it to the device. I stuck a '.1' on the end of the version number so I could see it had worked in the EDTracker UI.
I previously had the scale values at 1 before the flash and they definitely reset to 5. I might give it another try...in the name of science, of course.
Hey,
WHAT IS THE ISSUE WITH OPENTRACK AND ED SIDE PANELS???
If there need be ed -> freetrack 2.0 -> opentrack 1/3 key support then file a bug report.
@NeiF
> So is it possible this auto-centering code can be modified or optionally turned off via the calibration program pretty please?
I'll ask Dan and Phil to disable it, and allow for configurable drift fix from mm0zct from Rift.
But which axis/axes need it?
WHAT IS THE ISSUE WITH OPENTRACK AND ED SIDE PANELS???
If there need be ed -> freetrack 2.0 -> opentrack 1/3 key support then file a bug report.
@NeiF
> So is it possible this auto-centering code can be modified or optionally turned off via the calibration program pretty please?
I'll ask Dan and Phil to disable it, and allow for configurable drift fix from mm0zct from Rift.
But which axis/axes need it?
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Yes you can. You just have to set orientation in the UI tool. There are several options and then calibrate the tracker so it knows which way is which.
I think most people put it in top to avoid headphone speakers and possibly metal parts which might cause interference.
It's edtrackers built in auto centering that is interfering with opentrack. The tracker checks once a second to see if any slow movement seems to have caused a drift and re centers.
When you calibrate the edtracker, normally you give each axis a linear or exponential scale of 5 - 16 which multiplies all the head movement. But because opentrack uses spline graphs, for OT it's best to keep tracking 1:1 and use the mapping in opentrack. Unfortunately the hard coded auto centering doesn't adjust with scale it sees all 1:1 movement as being drift and resets every second. It expects a multiplier and exaggerated movement.
I commented out the built in auto center to make the edtracker work until the next EDtracker UI tool is released with fixes.
Yep, what he says ^^^
I am working on updating the website guide and details but I have a bit of a problem thanks to a car taking out a telegraph pole outside my house, and so my broadband...! So bad timing, but please bear with, it's top of my priority list.
The BT engineers are here as I speak sticking a new post in
I am working on updating the website guide and details but I have a bit of a problem thanks to a car taking out a telegraph pole outside my house, and so my broadband...! So bad timing, but please bear with, it's top of my priority list.
The BT engineers are here as I speak sticking a new post in
Its the yaw axis that drifts (horizontal side to side)
I think open track accentuates the autocentre thats coded into edtracker ... Evidence for this may be that while using open track you have to turn the scale in edtrackers gui right down to 1 to stop my head movements looking like a mad man on concentrated caffiene.
Hope that helps
Edit: ninja'd lol
I think open track accentuates the autocentre thats coded into edtracker ... Evidence for this may be that while using open track you have to turn the scale in edtrackers gui right down to 1 to stop my head movements looking like a mad man on concentrated caffiene.
Hope that helps
Edit: ninja'd lol
I'm not too surprised about this - the auto-centering is a kludge, and as such will work well in some situations & bad in others. I'd been considering disabling that code myself, to see if it reduced my drifting problem...
I await usage of the magnetometer (compass) with baited breath
Rafe Zetter
Banned
I'm really interested in having one of these, but me and electronics don't do well together, my few feeble attempts at soldering; abysmal.
I'd be willing to pay someone to make one of these up that I could simply use "out of the box" so to speak. I gather there's code too but that I should be OK with I hope.
TrackIR seems extremely expensive if this is essentially all that's involved, hats off to all involved for making something so simple and much more affordable.
I'd be willing to pay someone to make one of these up that I could simply use "out of the box" so to speak. I gather there's code too but that I should be OK with I hope.
TrackIR seems extremely expensive if this is essentially all that's involved, hats off to all involved for making something so simple and much more affordable.
I ordered one from the contact form on their site, but as yet have had no confirmation of the order, is this normal?