Quadcopters / Drones / Helicopters / Rotary wings stuff > Electrics

Giros

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Ron:
Just a simple question (I hope :roll: ), but is it right that giros respond to rotational movement not linear?
So if you had one laying on the bench in front of you and you moved it bodily upwards, or sideways, it would give no response. But if you twisted it, say rotated it around it's vertical axis so it would now be facing a different way on the bench, it would give a response.

Hope all that rambling is clear :oops:

Ron

rogallo:
yes

IceWind:
Hi Ron,

That is correct.
Like you said a gyroscopic sensor measure the rate of rotation within a particular axis.

The other case would be a job for an accelerometer sensor.

Ron:
Thanks for the replies.

Next question then is...
Does the giro only respond while it is being turned?
I think this must be the case otherwise it would only stop responding when it returned fully to it's initial position.

Ron.

IceWind:
Are you refering to a sensor itself or a heli gyro?

The way the sensor itself works is the following.
So these guys usually have a minimun of 3 pins, GND, Vref, Vout.
You feed him with a reference voltage on the Vref pin, let's say 2.5v.
Then when the sensor is stopped it reads like 1.25v in the Vout pin when it's it's turning in one direcftion it outputs >1.25v (ex. 1.40) when it's moving in the oposite direction it outputs <1.25v (ex. 1.10v).
The output represents degrees/second expressed in a voltage difference against the value you read when the sensor is stopped.

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