Light dependent resistors ldr1 through ldr4 are used as sensors to detect the panel s position relative to the sun.
Sun tracking solar panel circuit.
Here is a simple low cost solar tracker circuit which automatically moves the solar panel in the direction of sun.
Two light dependent resistors are arranged on the edges of the solar panel.
The movement of the sun is detected using two ldrs which are arranged on the solar panel in such a way that the intensity of light falling on it varies as the direction of sun changes.
For solar panels control is best to use small motors with a suitable voltage and a maximum working current of 300 ma.
Circuit of solar tracking system.
The sun tracking solar panel consists of two ldrs solar panel and a servo motor and atmega328 micro controller.
Solar tracking system circuit fig.
If you want to track the solar light in the vertical plane you need to build a separate sun tracker circuit.
1 shows the circuit of the solar tracking system.