TLDR: bot just spins in circles on block “Turn to Heading 90 degrees”
I am helping my son learn automation on a bench bot at home. Thought this would be easy 
He did a great job building a program without using the internal gyro, but it eventually looses accuracy. We started into using the inertial brain, but it just spins when told to go to heading 90 degrees. What am I doing wrong? The brain is vertical.
