Hello Everyone;
I am pretty new to Arduino and for a project, we are controlling 4xMG995 Servo Motor + 1xSG90 Servo motor , 2x Ultrasonic and 1x Color Sensor with an Arduino Uno. For Servo Motors I know what we will need to use external power supply and the grounds should be common. What I wonder is that , can all that voltage(35-40 V) can be grounded to Arduino Uno's ground pin.
Thanks in advance!
What external supply are you using? Where do you get 35-40V from? None of those servos will survive on anything like that and they are connected to the power supply in parallel not in series.
It should be more like a 6V supply and yes the ground must be connected to the Arduino ground.
Steve
Oh I see, since they are parallel lines, I guess I will actually be grounding 6V, not all the voltages combined.
I am planning to use 6V batteries for each servo but if there is a smarter/easier way, I'm much open to do it. Also tahnk you very much.
The ground is at 0V by definition. So you will be grounding lots of 0V lines together.
Servo's have high peak current requirements so you must ensure adequate power for them, probably at least
5A is needed for that setup if the servos can all move at once.
Keep the 6V supply for the servos separate from the rest of the electronics, it will be very noisy with
all those motors on it, just a single shared ground connection that takes no current.
Thank you very much
Hi,
I suggest you take a look at http://arduino-info.wikispaces.com/Arduino-Project-Planning-Electrical
See especially "Common Ground Point"..
Hello,
Thanks for helping out !