摘要： Wireless Sensor Network is a system to monitor area condition from the different place. WSN is usually located in distant or difficult to reach places, therefore the use of energy is very important and become a big concern. One of the solutions is WSN must be able to generate energy from the renewable energy such as sunlight. There are so many researches which propose the new way of increasing energy produced by solar cells. This is effective but still have a room of improvement such as to ensure maximum absorption energy by solar panels, the direction of the coming light must be perpendicular to the surface solar panels, and this is not yet achieved. Therefore, to improve the efficiency of solar panels, the author took the initiative to combine Maximum Power Point Tracking technology with dual axis solar tracking system to optimize absorption energy by solar panels. The proposed solar tracking technology uses LDR sensors to detect the direction of the coming light, so this system can adjust to various conditions to make sure the absorption is maximum.