Two photoresistors form a bridge detecting difference in the amount of light they receive. This can be used to control a servo or a stepper motor to find the balance point for solar tracking systems, for ex. for solar panels. Technical data: PCB dimensions: 35x16x1.2 mm Voltage: 5-5.5VDC Current: Less than 1.5A Interface: +/- Power supply M motor https://elecena.pl/product/22627037/solar-tracker-sensor-module 2023-02-23 https://elecena.pl/product/22627037/solar-tracker-sensor-module 2025-06-08 https://elecena.pl/product/22627037/solar-tracker-sensor-module 2025-10-26 https://elecena.pl/product/22627037/solar-tracker-sensor-module 2025-10-28