B-Robot Evo 2 Balancing Issues - Printable Version

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B-Robot Evo 2 Balancing Issues - GK18 - 11-09-2017 11:17 PM

I've built two of these robots for a class in school. They were both assembled the exact same way, but one of them seems to have a problem with balancing. It won't stand up or respond to any controls from the app. I've already checked the IMU placement and somewhat checked the debugging but I'm not sure on what's wrong and how to fix it. Help would be appreciated greatly.

RE: B-Robot Evo 2 Balancing Issues - PaoloP - 11-10-2017 09:18 AM

Check the Vref on stepper's drivers.
[Image: A4988-adjusment1.jpg]

RE: B-Robot Evo 2 Balancing Issues - JJrobots JP - 11-10-2017 09:54 AM

Does it behave like this video during the start-up?: https://www.jjrobots.com/wp-content/uploads/2016/11/standing-up-1.mp4?_=1
Moving the arm and spinning the wheels a little?
If not: that means (very likely) that the IMU is not sending the correct data to the Arduino.

Does trimming the stepper motor drivers help? Are you using new batteries? (the voltage is quite important to deliver power to the motors)

If any of the things listed above help, contact us at: info@jjrobots.com