The design of a solar tracker has been carried out using an LDR sensor to obtain the strongest light as the sun moves. The electronic circuit used includes LDR
KY018, WEMOS ESP 3, servo motor, Solar Charger Controller, INA219 Power Sensor,
Battery and 10 A/5V Relay. The mechanical structure uses angle iron construction
which is assembled in such a way as to support solar panels with the Sunlite Model
156P-20 type. Solar panels are positioned on 2 poles and attach the bolts as the rotary
axis. LDR that gets sunlight will provide input to the WEMOS ESP 32 to drive the servo motor in line with the direction of the sun in the east-west direction. Solar cells that are used are polycristalline with a maximum power of 20 Wattpeak.
Keywords: Solar tracker, Solar panel, LDR Sensor, ESP 32, Motor Servo