Rather not add another 5V supply for the servo.
You might power the servo via a 7805 regulator chip connected to the 12v power supply.
Quote from: zoomkat on Jan 10, 2013, 06:55 amYou might power the servo via a 7805 regulator chip connected to the 12v power supply. As they might say on 9gag... "You make a suggestion like that on this forum and you gonna have a bad time"
This sounds like a code problem. Did you include the Servo library in your code? On a non-Mega Arduino that will disable PWM on pins 9 and 10.
Some members are "against" regulators like that because they waste power.In a 7805 style regulator, the input current is always the same as the output current, so since it's at a higher voltage, the difference in input - output voltage, times the current, is the wasted power in watts.That waste manifests as heat.....