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Early March - GREAT PROGRESS - Giving it a brain, and a problem solved. I've built the brain-board with its 20x2, pluggged everything together and IT'S ALIVE! - but the servos were all over the place. I am running the electronics from the same supply as the servos and thought I was going to have to split them (although I was very careful with the decoupling on the build) as the rail was dropping by 2 volts when the servos activated However, I tracked the problem down to a dodgy rechargeable battery. ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/my-first-robot-mind-the-obstacle-avoidance