This is my first post on here so bear with me...
I have two (continuous rotation) hobby servo motors connected in parallel on a breadboard, and these are powered using the regulated 5v from the arduino.
The problem I'm having is simple but I'm not sure how to correct it...
When i supply the Vin pin on the arduino with 5v (using the green wire) from a lego nxt brick port, the servo motors start to move on their own accord even if the arduino program hasn't told them to.
When I supply the arduino with 9v from a lego nxt brick port, the servo's remain in position like they are supposed to, but one of them doesn't work when the arduino program tells it to move.
When I supply the arduino with 5v via the usb connection port, everything works with no problems... the motors stay in position until the arduino program tells them to move.
However I do not want the robot tethered to the computer hence I would prefer if I could get it to work using either the 5v or 9v supply from the nxt brick, could anyone help with this?
Here are videos of the robot working as it should (using usb power to the arduino).
Thanks a lot for any help you can give.