Name: Single-Light Source Tracking Board Voltage: 5–5.5 VDC Current: < 1.5 A Interface: Power (+, −), Motor (M) Principle: Uses a shielded photoresistor configuration. When light casts a shadow on the shield, differential resistance is generated between the two photoresistors, enabling motor control to locate and stabilize at the light source center. Power Supply: Regulated 5–5.5 V DC only. Not compatible with direct solar panel connection. Motor: Geared motor recommended—slower speed preferred. Example motor: JGY370 (6 V rated); operates stably at 5 V under no-load conditions. Excessively high motor speed may cause slight oscillation during alignment but not jitter. Anti-shake functionality implemented via short software delay. Motor Wiring: Polarity-insensitive—no distinction between positive/negative motor terminals. If motor rotates opposite to light direction during testing, reverse motor lead connections. Color: Black Material: ABS Dimensions: 36 × 16 × 1.2 mm Package Includes: - 2 × Probe - 1 × Main Board Note: Color appearance may vary slightly due to lighting conditions and display settings. Measurement tolerance: ±1–3 mm.