Controlling High-Power LEDs with Microcontrollers

A guide to using ICs for LED power control

Introduction

  • Musique - Introduction to the topic of controlling LEDs with microcontrollers
  • Highlights the use of LEDs and the presenter's interest in using them for projects
  • Promotes the upcoming video as an explanation of a simple IC for LED power control
  • Encourages viewers to subscribe to the presenter's channel for support

The Module

  • Discusses the discovery of a module on AliExpress that meets the presenter's needs
  • Explains that the module can be powered by a 4.2V lithium battery
  • Describes the simple circuit design and its easy integration into future projects
  • Mentions the components of the circuit: CN 5711, resistor, and potentiometer

CN 5711 IC

  • Introduces the CN 5711 IC as a current regulation solution for driving LEDs
  • Mentions the input voltage range and the ability to adjust constant output current
  • Highlights the temperature regulation and overcurrent protection features
  • Explains the three ways to adjust the output current, focusing on PWM control

Circuit Connection

  • Demonstrates the simple circuit connection for powering the LED using the module
  • Explains the connection of power supply to the 'V1' and 'CE' pins
  • Shows the connection of the 'LED' pin to the positive terminal of the LED
  • Mentions the common ground connection between the module and microcontroller

Adjusting LED Intensity

  • Demonstrates how to adjust the LED intensity using the potentiometer
  • Explains that the module allows for adjusting the LED current from 30 to 320mA
  • Shows the audience how to achieve the desired intensity by turning the potentiometer
  • Emphasizes the versatility of the module in controlling LED brightness

Microcontroller Integration

  • Explains how to use a microcontroller, such as Arduino, ESP32, or ATtiny85, to control the module
  • Shows the connections required, such as connecting the 'CE' pin to an Arduino GPIO
  • Mentions the addition of a ground connection between the microcontroller and the module
  • Highlights the ease of generating a PWM signal using microcontrollers

Code Implementation

  • Demonstrates the code implementation for controlling the LED with Arduino Nano
  • Mentions the availability of similar code for ATtiny85, ESP32, and ESP8266
  • Encourages viewers to access the presenter's GitHub repository for instructions
  • Explains the functionalities of the loaded code, including LED flashing and intensity adjustment

Final Experiment

  • Describes the presenter's attempt to create a custom module with the CN 5711 IC
  • Mentions its successful operation but highlights its large size and aesthetics
  • Teases the upcoming video on a more professional PCB design by the presenter
  • Expresses gratitude to the viewers and offers additional information and support

Conclusion

  • Summarizes the content of the presentation
  • Mentions the availability of the guide and additional information in the video description
  • Encourages viewers to leave comments for any questions or doubts
  • Expresses appreciation for the viewers' engagement and visits to the presenter's channel