Abstract: A relatively simple, inexpensive, and easily manufactured device for accurately tracking the daily and seasonal movement of the sun anywhere, and in any climate, without the need for human and/or computer intervention. This sun tracker can be made to any size, out of common materials, and using standard assembly line techniques. Said sun tracker can be installed for any application by an unskilled person. Once installed, it will use a simple electro-mechanical configuration instead of a complex mechanical or costly computer control, as all prior art required.