Could u plz help me build a wired robot which has an easy mechanism to carry small table tennis balls

Question

it should not include a microcontroller

Answer 1

Carry - small wheeled or tracked vehicle with basket on top

Pickup - make an L shaped basket with sides that is hinged so the edge of the L is on the ground.  Put it on a mobile base at the front and add a motor with a threaded shaft to pivot the basket.  Roll the base forward under the balls, pushing them against something to get them into the basket, tilt it and roll away with the balls