SparkFun Forums

[sr205347d]

I am planning on using my OLA in an RC model aircraft. Is there any way to log servo position? How?

Thanks!

Andy

[TS-Chris]

Hi Andy.

Sadly the OLA isn't setup or programmed to read servo position.
To do something like this, you'd need to use another micro controller like a Pro Mini to decode your servo signals and convert those to a number and then pass that serially to the OLA for logging. Unfortunately we don't have a guide for this but the Arduino command pulseIn() could convert a servo signal to a number.

[sr205347d]

Chris,

Thanks, It looks like the library ServoInput would take the receiver signal to the servo and convert it to something I could log. Do you agree?

If my arduino board is 5v, do I need a logic level converter between it and the OLA?

[TS-Chris]

Yes, that should work.
You will need a level shifter to change the 5 volt serial from your Arduino down to 3.3 volts for the OLA. BOB-12009 should do the trick.

[sr205347d]

I read in another thread that you can’t time stamp the serial data. Since I want to correlate the aircraft’s G load with servo movement, the servo data would be useless.