Take: one wooden palette, one bicycle wheel + 4 furniture rolls, fix wheel to palette + rolls in place to support weight of solar panels mounted on the wheel using 2 hinges, screws & nuts on south side and 2 hinges between an adjustable (summer/winter-position) extension bar on north side. mount a motor with belt or chain connected to wheel on palette, driven by signal derived from two mini solar panels next to each other, fixed to the lager panel with a perpendicular separation board inbetween, causing no shade on either mini panel when optimally positioned, and more shade on the side from which to move away from, triggering the motor to move until no shade→DIY:FollowTheSun
Extras: Light sensor for triggering automatic return to morning position, Storm meter for triggering safety position/locking mechanism, Two more mini panels + separator 90° off to generate signal for motor-driven north side extension bar→DIY:FollowTheSun3D