At 01:36 PM 12/5/97 -0500, you wrote:
>I completely forgot about R/C heli gyros (I used to fly R/C).  What kind
>of output do you get from them?  PWM?

Standard RC-servo style PWM.  They attempt to correct for rotational errors.

The output signal is proportional (not always linearly <G>) to the RATE of
rotation.  That is, a sudden yaw will produce a larger signal than a
smaller one.

>How accurate are they with regard to temperature and gyroscopic precession?

No precession - they are piezo.

As for temperature - they are sensitive to input, but the small changes you
find in "normal" operating temperature range are easily compensated for
with your trims.

The trick is to let the craft achieve the same ambient temperature as it
will have during operation.

Post a note with the title "Arcamax" or "R/C Heli Gyro Help Needed" and you
might get a few more responses.

Whatcha tryin ta do?

Andy

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Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
          Hardware & Software for Industry & R/C Hobbies
        "Go fast, turn right, and keep the wet side down!"
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