Power supply Issue

Other Hardware Motors, Mechanics, Power and CNC
1

Hello
i am facing problem with the external Power Supply (6V)

Arduino is also connect to PC with the USB Cable
because we are communicating on the COM Port.
Here is Problem

(1)
when i connect the Ground of Arduino to the Ground of the external Power Supply,
After that if i try to measure the voltage on the External Battery then i got only 0.20 V.

(2)
when every thing is connected Means with external supply and also ground are combined.
after that if i try to open the com port then PC loose the Driver of Arduino
so then i need to Reset the Arduino to get the COM Port.

so i think some where is Reverse Current Follow from external supply to PC
My connection are same like this PIC

2

Hi,
How are you measuring the external battery volts, what is your external battery?
What are the battery volts with servos disconnected.
Servo's need a good power supply.

Tom.... :slight_smile:

3

hello. thank you for your reply
First image i got it from the internet and upload because my connection was also the same
this time i update the image and i also investigate the issue in more detail.

the Arduino Project Working fine with external supply

if i Turn ON the Motor with separate supply (24V),
then the Arduino supply(5V) get crazy.
Both Power supply are connected in the Same line
and i am using MultiMeter to test the Voltage.
i think this problem belongs to the flux of the motor or i don't know..
can you please guide me About this issue

Thank you

4

Hi,
Sorry but I am confused, your servo are now LEDs and you have a 24V 30A what ever and talk about a motor.

Can you please post a copy of your circuit, in CAD or a **picture of a hand drawn circui**t in jpg, png?

Please LIST all the hardware you have.
Tell us what you want to do.
Tell us what it is not doing.

Tom....... :slight_smile: