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Roomba 650 - Drive Motor - Specifications

Hello community members!

My Roomba 650 died and I'm in process of salvaging parts to use in my projects.

I took the drive motor assembly out and I'm trying to understand its terminals and motor specifications.

Does anybody know the voltage rating of this motor? I found out that it is a DC motor which needs to be controlled by an external H bridge.

It is working at 9V, but I want to use it at the voltage it is designed to work optimally.

I've attached some pictures.

Any help would be appreciated.

Thank you! Pratik User-inserted image

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#1  

The motors run on14.4v.... Some of those wires would be from the wheel encoders.... Yes, you will need an H-bridge to control the motors unless one is built into the motor module itself, which I doubt....

#2  

Richard,

Thank you for that information!

Do you happen to know the current rating of this motor? I'm trying to select the motor controller for it.

Thank you, Pratik

#3  

No, but looking at the gauge of motor wiring I can't imagine it being much more than a few hundred mA.... Remember the lower the voltage you use the higher the power (mA) that the motors with pull... A standard H-bridge (like the ones in the store here) should be fine...

#4  

Oh ok. In that case, I'm wondering if I can go for L293D dual H-bridge. It can at maximum handle 600 mA. Do you think that's enough?

https://www.adafruit.com/product/807

Thanks, Pratik

#5  

If it is 600mA per channel then it should be ok as long as your bot isn't too heavy (more than 5lbs or so)....

#8  

Robot-Doc would know the answer to that.