NOVELTY - The tracker has a base (1) connected to an end (2a) of a solar panel (2) by a shaft such that the panel pivots with respect to the base around the shaft. A lifting/lowering actuator (10) and a lifting mechanism pivot the panel between a raised position and a position parallel to the base. An automatic connection/disconnection device connects another end of the panel to the base while disconnecting the former end. The panel reaches the parallel position for inverting inclination of the panel when the mechanism is driven for moving the panel from the parallel position toward the raised position.    USE - Two-shaft solar tracker for a small-sized solar panel i.e. photovoltaic panel, mounted on roof of a building and on a vehicle. Can also be used as a portable solar power unit.    ADVANTAGE - The tracker includes two alternating parallel rotation shafts that are provided as a single rotation shaft for daily tracking along east-west direction so as to avoid the need for two tracking mechanisms, thus reducing size and weight of the tracker, and hence reducing manufacturing cost of the tracker. The tracker rotates the solar panel again around the same shaft for reaching the position parallel to the base when the solar panel is in the position parallel to the base for better movement flexibility. The tracker anchors ends of the solar panel to the base at the same time so as to increase the resistance against effects produced by wind when the solar panel is in the position parallel to the base, in the event of a storm or when the tracker is fixed on the roof of a moving vehicle. The tracker utilizes an electronic control unit that can be programmable and can include a user interface, so that a user can establish a program and select an operating mode.    DETAILED DESCRIPTION - The actuator is an electromagnetic actuator.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a solar tracker.    Base (1)    Solar panel (2)    End of panel (2a)    Lifting/lowering actuator (10)    Support structure (25)