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Topic: SG92R micro servo motor (Read 212 times) previous topic - next topic

ieee488

Jan 05, 2018, 11:03 pm Last Edit: Jan 05, 2018, 11:16 pm by ieee488
I bought two of these micro servo motors and the unassembled pan-tilt assembly from Adafruit.
https://www.adafruit.com/product/1967

To test it out, I am using the servo Sweep sketch for just the pan.

I am powering the servo from a different USB port on the PC than the Arduino Uno.

During the sweep, there are times where the servo appears to be "jumping" a new position.
Not smooth.

Is it because I need to provide it even more power than a USB port can provide?
Or is it something else?


PaulS

Quote
Is it because I need to provide it even more power than a USB port can provide?
Possibly. Adafruit's idea of "Technical Details" about the servos is a joke.

Servos are usually powered by batteries, not USB ports.
The art of getting good answers lies in asking good questions.

vinceherman

#2
Jan 08, 2018, 02:43 pm Last Edit: Jan 08, 2018, 02:45 pm by vinceherman
I am powering the servo from a different USB port on the PC than the Arduino Uno.
Try using a battery like @PaulS suggests.  Make sure the ground is common between the battery and the Arduino.

ieee488

#3
Jan 08, 2018, 03:07 pm Last Edit: Jan 08, 2018, 03:10 pm by ieee488
I tried running the servo from a 5V/10A AC adapter that I was using for my RGB LED strip.
Seems better.

Also, tried running running from 4 AA batteries.
Seems better.

Servos are cool.

I bought the pan-tilt assembly for https://learn.adafruit.com/pixy-pet-robot-color-vision-follower-using-pixycam but did not notice that I needed a Leonardo and that the robot is nearly $100.

I am not sure what to do now.  :-/


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