powering multiple servos ground connection

Other Hardware Motors, Mechanics, Power and CNC
1

hello I am about to turn on my power supply for 8 5v servo but I just wanted to double double check my wiring was ok as I really don't want to damage any of my equipment.

I have a 5v 13amp power supply. the positive of which is wired to the first slot on the positive rail of my breadboard and the negative of which is wried to the first negative slot on my breadboard. on the next available negative slot I have a wire going to my arduino's ground pin, then on each subsequent positive and negative slot I have wired the respective positive and negative wires from my servo's.

I think this is right from all that I have read but I just wanted to double check as I really don't want to damage any of my equipment

cheers
sam

2

Sounds right but English words are such an inadequate means to communicate electronic circuits, which is why schematic drawings are so valuable. Also I've never played with a +8.5 VDC servo, all I've come across have a voltage rating of +4..8 to +6.0 vdc?

3

Basic servo power setup:

4

You are probably putting too large a current through the breadboard, better to connect
the supply to the servos more directly if powering 8 at a time. Or at least connect
wires from the breadboard rails to the supply every few holes, interspersed with the
servos.

You only need one ground wire between the breadboard and the Arduino, it won't
be taking any large currents.