Adjustable Breadboard Supply help

[jahrel]

Hello--

Being very new to Arduino and the world of electronics, I've started playing with a few projects and I think I'm ready to move to a little bit more complex projects. Over the weekend, I was thinking about how to drive a DC motor using the Adjustable Breadboard Supply. I've done with with a very small servo with no isolation but now I'm considering a bigger motor (6V).

Can somebody help me with some questions?

- Can I drive the motor from the high voltage side?
- I'm using an opto-isolator to control the DC motor. Can I ground the regulated side to the Arduino or do the sides share a common ground?

Thanks in advance!

Jahrel

[adafruit_support_bill]

- Can I drive the motor from the high voltage side?

You mean the VIN on the breadboard supply? Assuming that the supply that is feeding it is adequate, yes.

- I'm using an opto-isolator to control the DC motor. Can I ground the regulated side to the Arduino or do the sides share a common ground?

Both sides of the breadboard supply share a ground.

[jahrel]

Thanks for the reply!

You mean the VIN on the breadboard supply? Assuming that the supply that is feeding it is adequate, yes.

Exactly. In this case, I only need the usual protections, right--a diode to prevent back surge and so on.

Both sides of the breadboard supply share a ground.

Okay. So an opto-isolator won't make a difference and I still have to ground the regulated side to the Arduino.

Jahrel.

[adafruit_support_bill]

I only need the usual protections, right--a diode to prevent back surge and so on.

Yes. A diode is a good precaution.