Hello guys i have prepare this short DIY video on Solar Tracker which is very useful of solar panels / solar cooker and solar umbrella to adjust its self towards sun sunlight this system works with the help of 4 Light Dependent Resistor Each on four corners . So when ever the light gets blocked on corner the the servo rotates towards the light so the LDRs will be Parallel to source of Light You can follow this video and prepare this project for your schools Science projects and after a simple modification you can connect it to internet device and measure luminous intensity of light and monitor the battery charge and output voltage of your panel and you can use it as advance project.