Operating Servos with Arduino

Hi

Please, could anyone tell if the circuit in the attached image can be executed with Arduino?
In other words, in this circuit the power supply is external and the Arduino only supplies the control ports, so, is Arduino able to supply the control input of the motor?

It definitely won't work like that because you don't have the grounds connected to the Arduino.

But as to using one pin to control 5 servos I don't know and I'll be interested to see what the guys say. I'm inclined to guess it will work, but it depends if the control line carries any appreciable current, I guess.

And if you literally mean to use 9V, well servos are usually 4.8 to 6.....

The potentiometer needs to be connected to Arduino ground and Arduino Vcc… Connect
it to the servo supply and you’ll easily burn out your Arduino.

Common the grounds with the Arduino at one point, use separate power for the servos,
and budget an amp per servo maybe…

MarkT:
The potentiometer needs to be connected to Arduino ground and Arduino Vcc… Connect
it to the servo supply and you’ll easily burn out your Arduino.

Common the grounds with the Arduino at one point, use separate power for the servos,
and budget an amp per servo maybe…

So, let’s say I connect the ground then every thing is going to function very well?
My main concern is that whether the arduino can supply the signal pulse for multiple servos

So, let's say I connect the ground then every thing is going to function very well?

Maybe, maybe not. A small 9v battery as pictured won't power servos. The servo grounds need to be connected to the arduino ground to get a correct control current flow path.

My main concern is that whether the arduino can supply the signal pulse for multiple servos

It probably can. Get one servo working, then start adding more servos.