pratik.panchal
USA
Asked
— Edited
Resolved by Dunning-Kruger!
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
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....
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
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...
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
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)....
This would be better... 2amp H-bridge
Awesome! Thank you!
Robot-Doc would know the answer to that.