I am powering UNO via USB (no external power supply), and driving HS-422 servo..
I worked on it for hours, and everything was alright, until suddenly the servo stopped responding !.. I noticed that it is now free-to-move as if it is not connected ! (I have connected it to 5V and its GND - as before) -
I don't have the equipments right now to measure the voltage or check the servo, but please suggest what should I do, and what could be the problem?
PS. I try connecting the +Servo to 5V socket with the wire and right when it touches it gets the power (for less than a second).