https://github.com/goldmanliyam/led-brightness-control

LED brightness control project using ESP32, CLI, potentiometer, PWM and FreeRTOS.
https://github.com/goldmanliyam/led-brightness-control

adc cli esp-idf esp32 freertos platformio pwm uart

Last synced: about 2 months ago
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LED brightness control project using ESP32, CLI, potentiometer, PWM and FreeRTOS.

• Host: GitHub
• URL: https://github.com/goldmanliyam/led-brightness-control
• Owner: GoldmanLiyam
• License: mit
• Created: 2025-09-18T14:25:05.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2025-09-24T18:49:36.000Z (9 months ago)
• Last Synced: 2025-09-24T20:29:31.552Z (9 months ago)
• Topics: adc, cli, esp-idf, esp32, freertos, platformio, pwm, uart
• Language: C
• Homepage:
• Size: 40 MB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# LED brightness control

LED brightness control project using ESP32, CLI, potentiometer, PWM and RTOS.

## Features

- The system is controlled by RTOS.

- CLI controls the system status (ON/OFF).

- A timer controls the potentiometer readings.

- When the system is OFF, the LED will be turned off, and the timer stops.

- The readings from the potentiometer are mapped to the PWM's range (0-255).

- `cli_task` reads characters from the terminal with UART connection.

- The task accepts the following words: `off`, `Off`, `OFF`, `on`, `On`, `ON`.

- ON turns the system ON, OFF turns it OFF

- Any other word will trigger the `help` message, which clarifies

  the acceptable words.

- If the system is already ON/OFF when entering ON/OFF, the user will be notified.

- Max characters to enter - 63, after the 63rd character, the `cli_task` won't read any other character.

- As soon as the system is turned ON, a new reading will occur.

- In case the timer won't stop/start, an infinite loop will occur, which triggers the watchdog.

## Demo

### 🎞️ GIF 1 – CLI Example

![CLI demonstration](assets/demo1.gif)

### 🎞️ GIF 2 – Brightness Control Example

![Demonstration for controlling the brightness of the LED](assets/demo2.gif)

---

### 📸 Project Images



  

  


  LED Brightness Control breadboard – top view





  

  


  LED Brightness Control breadboard – front view



## Installation

- Clone this repository:  

  git clone https://github.com/GoldmanLiyam/led-brightness-control.git

- Open with VS CODE and PlatformIO extension

- Connect ESP32 board

- Upload code via PlatformIO

## Usage

- `on` - Turn system ON  

- `off` - Turn system OFF  

- Any other word - Show help message

## Hardware

- ESP32 DevKit v1

- 10kΩ potentiometer

- 3mm, 3V LED

- 330Ω resistor

- Breadboard & jumpers

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

Created by Liyam Goldman