?
do you mean: to connect the negative servo leed to A or B on figure 2
or both
both
the external power supply black(ground, - ) needs to be connected to the arduino ground(GND)
Dave got it
Every ground should be connected to every ground, everywhere.
it works
thanks a lot
you were wright, it was the power source.
Guido
Good It worked
Usually the arduino should be able to power the servo by itself from usb.
that is something the
that is something the arduino does not in my case
about servos
i am thinking of buying those servos from dealx. are they good? i want to make a quadruped of those motors.
I bought these to learn how
I bought these to learn how to controll servos, because they are cheap, but they are not really strong.
For things like stearing a rc car they are fine, but for a robot I would invest in stronger onces.