myRIO digital servo drive with PWM

After scouring the internet for answers, I realized that I have neglected this resource.

I'm testing some small digital servos that will be used in a senior design project. When we received the myRIO I created a simple VI to drive a servo using PWM with a frequency of 50 Hz and by varying the duty cycle between 5 to 10%. I used a good servo is provided with an arduino kit, and it worked perfectly. However, the Blue Bird BMS-385DMAX servos arrived and when I tried with the VI I did, it didn't work. I confirmed that the servo works by running with an arduino, it just does not work with the myRIO. I'm not an expert of labview, and I'm new to the platform of RIO; any advice would be greatly appreciated.

I joined the project. Ignore the KeyDutyCycle VI and the variable shared; It was something I experienced, but has not used.

You use the myRIO + 5v and Gnd of to power the Servo?

MyRIO + 5v is limited to 100 my output which may not be sufficient to power the larger servo.  Try feeding the enslavement of another source, but still using the PWM myRIO.  MyRIO PWM (and all other outputs digial) should be ~3.33v as 'high '.

-Sam K

Hacker of LabVIEW

Join us / follow theGroup of pirates of LabVIEW on google +

Tags: NI Products

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