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This paper discusses design and implementation of dual-axis tracker for PV to supply additional power to extend the operating time of cleaning robot. The system consists of PV 3.5wp, servo motor Tower Pro G90, DC motor, motor driver L298, light sensor (LDR) and microcontroller. Dual axis solar tracker PV works with the principle of comparing light intensity on four light sensors to determine the direction of the oncoming light. PV will be directed perpendicular to the direction of the sunlight in order to maximize the energy production. From the test results obtained that PV produce the highest output voltage reaches 6.10 Volts on light intensity 110800 until 116500 LUX, when PV form the angle of 0 ° to 10 ° towards the sunlight. The average time of charging the battery using the PV, with battery condition 2.5 volt to 3.7 Volt is 94 minutes 48 second. For the average operation time of mobile robot with additional PV longer 7 minutes 17 second compared to mobile robot operation time of without additional PV.

Design and Implementation of Dual Axis Solar Tracker PV to Increase Cleaning Robot Operating Time