Adjustable Breadboard Supply help
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Adjustable Breadboard Supply help

by jahrel on Mon Dec 03, 2012 11:41 pm

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
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Re: Adjustable Breadboard Supply help

by adafruit_support_bill on Tue Dec 04, 2012 7:59 am

- 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.
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Re: Adjustable Breadboard Supply help

by jahrel on Tue Dec 04, 2012 8:18 am

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.
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Re: Adjustable Breadboard Supply help

by adafruit_support_bill on Tue Dec 04, 2012 9:40 am

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

Yes. A diode is a good precaution.
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