Note

Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

Why Join?

  • Expert Support: Solve post-sale issues and technical challenges with help from our community and team.

  • Learn & Share: Exchange tips and tutorials to enhance your skills.

  • Exclusive Previews: Get early access to new product announcements and sneak peeks.

  • Special Discounts: Enjoy exclusive discounts on our newest products.

  • Festive Promotions and Giveaways: Take part in giveaways and holiday promotions.

👉 Ready to explore and create with us? Click [here] and join today!

Video 30: Using a Photoresistor to Detect Light on the Raspberry Pi¶

Learn how to incorporate a photoresistor into your Raspberry Pi projects to measure light intensity and control actions based on brightness.

  1. Introduction to the photoresistor: Learn how a photoresistor’s resistance changes with light intensity.

  2. Physics behind the photoresistor: Understand the solid-state physics principles underlying the photoresistor’s operation.

  3. Building the circuit: Discover how to create a voltage divider circuit using a photoresistor and a load resistor.

  4. Programming the Raspberry Pi: Write Python code to read analog values from the photoresistor using the ADC0834 module.

  5. Testing the circuit: See how the circuit responds to changes in lighting conditions, demonstrating changes in resistance and voltage.

  6. Practical applications: Explore potential uses of photoresistors in projects such as automatic lighting systems.

Video