Solar Light Tracker Kit – Expansion Pack (Light Sensors and Servo)
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Prices updated: 13 Oct 2026
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About this product
An expansion pack for a small solar tracker. Two light sensors on opposite edges of the panel detect which side is brighter, and a servo motor turns the panel toward the light. The Arduino measures the panel output voltage through a voltage divider made of two 10 kΩ resistors. This kit measures voltage only and does not charge a battery. An Arduino Uno is required and is not included.
Specifications
- Actuator
- Servo motor
- Light sensors
- 2
- Voltage divider
- 2 × 10 kΩ resistors
- Measurement
- Solar panel output voltage (voltage only)
- Controller
- Arduino Uno (not included)
- Recommended age
- 12–14 years
- Level
- Medium
- Soldering
- Not required
Frequently asked questions
Can this kit charge a battery?
No. The kit only measures the solar panel's output voltage. It has no charge controller, so it cannot charge a battery.
Why is a voltage divider used?
Two equal 10 kΩ resistors halve the panel voltage so the Arduino's analog input stays within its 5 V limit. This means the panel voltage should stay below about 10 V.
