LED Strip App

A Windows desktop app for controlling cheap BLE LED strips over Bluetooth, built with C++ and ImGui.

About

I bought a cheap LED strip from AliExpress that came with the "Happy Lighting" app. Since the strip was attached to my workstation table and I didn't want to rely on the stock app, I wrote this small Windows program to control it directly over Bluetooth Low Energy. It's a straightforward utility -- nothing fancy, but it gets the job done.

Features

• Scan for and connect to BLE LED strips by device name
• Turn the strip on and off
• Pick any color with a full RGB color picker
• Adjust brightness with a slider
• Automatically saves your current settings (color, brightness, on/off state) on exit and restores them on next launch

Built With

• C++20 -- core language
• Dear ImGui -- immediate-mode GUI
• Win32 + Direct3D 12 -- window management and rendering
• SimpleBLE -- Bluetooth Low Energy communication
• Visual Studio 2022 (v143 toolset)

Getting Started

Note: This is a Windows-only application.

Prerequisites

• Visual Studio 2022 with the Desktop development with C++ workload installed
• Windows 10 SDK
• A Bluetooth adapter on your PC
• To find your LED strip's device name, use the nRF Connect app on Android or iOS to scan nearby BLE devices

Build and Run

1. Clone the repository:

   git clone https://github.com/mosamaasif/led_strip_app.git
   

2. Open LedStripApp.sln in Visual Studio.
3. Select your desired configuration (Debug/Release) and platform (x86/x64).
4. Build the solution. The output executable will be in bin/{Platform}{Configuration}/ (e.g., bin/x64Release/).
5. Run the app, enter your LED strip's device name, and click Connect.

Screenshot

License

This project is licensed under the MIT License -- see the LICENSE file for details.