Controlling LED Intensity with Light Sensors

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SUMMARY

This discussion focuses on controlling LED intensity using ambient light sensors. The Light Dependent Resistor (LDR) and photodiodes are recommended as effective solutions for sensing surrounding light levels. The project involves adjusting the brightness of a white LED based on the light emitted from a computer monitor. Participants emphasize the importance of selecting the right sensor to achieve desired LED performance in varying light conditions.

PREREQUISITES
  • Understanding of Light Dependent Resistors (LDR)
  • Familiarity with photodiodes and their applications
  • Basic knowledge of LED circuitry
  • Experience with ambient light sensing techniques
NEXT STEPS
  • Research the specifications and applications of Light Dependent Resistors (LDR)
  • Explore the functionality and use cases of photodiodes in lighting control
  • Investigate circuit design for integrating LDRs or photodiodes with LEDs
  • Learn about microcontroller programming for automated LED brightness adjustment
USEFUL FOR

Electronics hobbyists, lighting engineers, and developers working on projects involving ambient light sensing and LED control will benefit from this discussion.

zapper
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Hi I would like to know if there is a sensor available in the market that would help control the intensity of light given out by a white LED, taking into account the light coming from the surrounding ambient light. As an example I am trying to implement a project in which I would have to control the intensity of light given out from a white LED which is placed above a computer monitor screen, based on the intensity of light given out from the computer screen, I would have to control the LED light. I would also like to know if the sensor is not available in the market how am I supposed to go about implementing this project.
 
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A photodiode generates current due to the light intensity that it senses, maybe u can try it.
 

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