Hello all,
I need to build a circuit to use the output from a commercial headtracker like the Flytron DT-3K to drive 2 digital or analog servos DIRECTLY, bypassing the whole Tx/Rx paradigm.
Using the DT-3K system WITH a Tx/Rx driving the 2 servos would work perfectly for my project however I need it to work without the Tx/Rx.
In an effort to bypass the (what I am assumming is PPM) signal decoding senario used in these commercial headtracking units that plug into a trainer port, I have used 2 Futaba GY240 gyros (PWM output) to accomplish a headtracker successfully, however the drift is unacceptable.
I have used the X-GYRO 1000 but the drift is just as bad. Does anyone know how pushing the little black button re-centers the gyros so quickly on this headtracker? I have searched everywhere (including emailing the manufacturer) to find this out. If I knew the answer I could probably apply the solution to my GY240's. Until then I am looking at using the DT-3K for it's anti-drifting capabilities (having to face north to use it is not an issue for the project)
So in summation: I am assuming the output from either commercial headtracker is PPM (2 channels). I need a circuit to convert the PPM signal for both channels to PWM to drive the servos.
There are tons of solutions for PWM to PPM conversions out there. I have looked all over for a circuit solution to convert the PPM to PWM but with no success.
The 2 acceptable options for the project that would work are either 1 - figure out how to minimize the drift of my 2 GY240's and figuring out how the X-GYRO 1000 does it with the little black button (I don't mind pushing the button once in awhile) or 2 - Coverting the (what I assume to be a PPM signal) from a commercial unit like the DT-3K or X-GYRO 1000 into the PWM signal to drive the 2 servos.
If someone could point me in the right direction that would be great.
Thanks...
Replies