Problems always occur in solar panel users, namely the efficiency of solar panels in solar panel generation systems. This causes the need for a solar tracker system. The tracker system serves to increase the productivity of solar panels. This research designed a tracker system consisting of Arduino Uno, LDR sensor, ADXL335 sensor, GY271 sensor and servo motor. The LDR sensor can detect the level of sunlight and send a signal to the Arduino Mega which will then be processed and send commands to the servo motor to move following the Arduino Mega command, which is towards the direction of the light source. The ADXL335 sensor and GY217 sensor function to determine the slope and cardinal direction of the solar panel that will be displayed on the 20x4 LCD.