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Topic: Servo requiring separate power and ground (Read 120 times) previous topic - next topic

kv07

I have attached a Servo (fairly small) to my circuit along with an Ultrasonic sensor, the Servo works properly when it's given standalone supply and ground in the Arduino pin, but doesn't work when it shares a common power and ground with the Ultrasonic sensor in the breadboard. What can be the reason?

bos1714

I have attached a Servo (fairly small) to my circuit along with an Ultrasonic sensor, the Servo works properly when it's given standalone supply and ground in the Arduino pin, but doesn't work when it shares a common power and ground with the Ultrasonic sensor in the breadboard. What can be the reason?
It could very well be a power problem. Perhaps your Arduino cannot supply enough current to the servo to run it. If possible, does your independent power supply say how much current it is supplying the servo?
Lines? Time isn't made up of lines. Time is made up of circles. That is why clocks are round.

slipstick

Servos, even fairly small ones, use quite a lot of current. Breadboards often cannot handle quite a lot of current. Servos and anything else that uses motors should always have directly connected power, not via a breadboard and not via the Arduino.

Steve

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