Trouble getting servo to work

[Whippet]

It would help us a lot if you could tell us whether you're programming an FTC or FRC robot, along with the programming language you're using and your current hardware setup.

[GeeTwo]

I agree with whippet that more info on both HW and SW use is needed.

One thing that strikes me as I look at the specs for this servo is the high current draw (500mA no load at 6V, presumably much higher when there's a load, much less at stall). You may want to check the voltage supply to the servo while you're trying to drive it; you may be pulling that voltage below the 4.8V required for reliable operation.

[BitTwiddler]

Originally Posted by GeeTwo

I agree with whippet that more info on both HW and SW use is needed.

One thing that strikes me as I look at the specs for this servo is the high current draw (500mA no load at 6V, presumably much higher when there's a load, much less at stall). You may want to check the voltage supply to the servo while you're trying to drive it; you may be pulling that voltage below the 4.8V required for reliable operation.

Just for reference the roboRio spec for the 6VDC power is rated at 2.2 Amp total.

[GeeTwo]

Originally Posted by BitTwiddler

Just for reference the roboRio spec for the 6VDC power is rated at 2.2 Amp total.

Again, note that the 500mA spec is for no-load operation. This is just to produce enough torque to overcome the internal friction. If there is a load resisting the servo's attempted travel, the current use for each servo could easily be several amps.

[mitchklong]

I dont think we tried plugging into a different PWM port. It returns to zero even when disabled.

[seg9585]

Originally Posted by mitchklong

I dont think we tried plugging into a different PWM port. It returns to zero even when disabled.

Is the PWM wire plugged in with the correct orientation? When the roboRio is disabled, the servo should be getting no PWM signal to go to any position including zero.