Marty - The ball follower
Yesterday, I tried to get Marty "Ball Follower" running. I followed the exact steps from: https://robotical.io/forum/thread/65.tcNyu4Oqy6mvvTcA1oCNUYeRGjs
Everything went fine at the beginning. Pi is running, Camera Image is there and even recognizes a white ball. The calibration also ran flawlessly, every motor could be controlled. Once i started running the python code under the point "Bringing it all together" in the article, Marty's servos went into strong jittering and they all moved in a specific ( in my case, the hips backwards, the knees both left) direction the whole time. I have now the problem, that my Raspberry Pi 3 B wont send commands out via its serial pins, the rick board won't load the battery ( no charging and no blue light). So i now have two defective Parts lying around.
Does anyone know, what my problem was? I just want to get the ball follower running. I tried the same thing with another Pi, another Image and another Marty. Same thing happened.
Can i use those batteries and charge it with the built in charger?
Thanks in advance Kind Regards AV