# fastled/fastled **Attribution required: if you use, quote, or summarise this content, you must credit and link back to [awesome-repositories.com](https://awesome-repositories.com/repository/fastled-fastled).** 7,290 stars · 1,738 forks · C++ · mit ## Links - GitHub: https://github.com/FastLED/FastLED - Homepage: http://fastled.io - awesome-repositories: https://awesome-repositories.com/repository/fastled-fastled.md ## Description FastLED is a C++ library for driving pixel-addressable LED chipsets and strips across various microcontroller platforms. It functions as an addressable LED control library and driver abstraction layer that converts color data into specific electrical timing for different hardware protocols. The project includes an audio-reactive visual engine for translating real-time beats and frequency data into synchronized animations, alongside a microcontroller math library optimized for high frame rates. The system provides a unified interface for managing various clockless and SPI LED chipsets. It distinguishes itself through performance optimizations such as LED signal overclocking, parallel strip driving, and signal timing adjustments to increase data refresh rates. The library incorporates an HSV color management system for color space conversion and gamma correction to ensure smooth brightness transitions. It also covers animation layer composition, spatial visual effects, and global brightness control to manage power consumption. ## Tags ### Operating Systems & Systems Programming - [Addressable LED Drivers](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/system-programming-primitives/system-programming/hardware-interfaces/led-controllers/addressable-led-drivers.md) — Provides an addressable LED control library for driving pixel-addressable LED chipsets and strips across various microcontroller platforms. - [Hardware Abstraction Layers](https://awesome-repositories.com/f/operating-systems-systems-programming/hardware-interfacing-drivers/hardware-abstraction-layers.md) — Wraps specific LED chipset protocols into a unified interface for cross-platform microcontroller compatibility. - [Driver Signal Optimization](https://awesome-repositories.com/f/operating-systems-systems-programming/hardware-interfacing-drivers/hardware-drivers/driver-signal-optimization.md) — Develops and tests LED drivers with precise signal timing and overclocking to increase data refresh rates. - [Hardware Register Timing](https://awesome-repositories.com/f/operating-systems-systems-programming/hardware-register-timing.md) — Manipulates microcontroller hardware registers and timing to overclock data transmission and increase refresh rates. ### Part of an Awesome List - [Embedded Math Optimizations](https://awesome-repositories.com/f/awesome-lists/data/math-libraries/embedded-math-optimizations.md) — Ships a math library optimized for high-speed execution on microcontrollers to ensure smooth LED animations. - [Runtime Driver Orchestration](https://awesome-repositories.com/f/awesome-lists/devtools/hardware-drivers/runtime-driver-orchestration.md) — Enables switching between hardware drivers and querying their status at runtime without requiring source code recompilation. ([source](https://cdn.jsdelivr.net/gh/fastled/fastled@master/README.md)) ### Graphics & Multimedia - [Audio-Reactive Lighting Controllers](https://awesome-repositories.com/f/graphics-multimedia/audio-music/audio-processing/audio-reactive-lighting-controllers.md) — Provides a system for synchronizing light patterns with real-time audio data streams for reactive visual effects. ([source](http://fastled.io/docs)) - [Embedded LED Animations](https://awesome-repositories.com/f/graphics-multimedia/embedded-led-animations.md) — Creates complex visual sequences by layering animations and using high-speed math to maintain smooth frame rates. - [Color Space Conversions](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/lighting-systems/lighting-control-systems/rgb-color-controllers/color-space-conversions.md) — Transforms intuitive hue, saturation, and value data into RGB components for hardware output. - [Signal Optimization Utilities](https://awesome-repositories.com/f/graphics-multimedia/display-configuration-managers/display-hardware-initializers/signal-optimization-utilities.md) — Allows for the adjustment of data transmission rates through chipset timing tweaks to increase refresh rates. ([source](https://cdn.jsdelivr.net/gh/fastled/fastled@master/README.md)) - [Color Calculation Logic](https://awesome-repositories.com/f/graphics-multimedia/graphics-and-media/colors/color-calculation-logic.md) — Calculates and applies complex color functions to LEDs, including support for analog outputs. ([source](https://fastled.io/docs/files.html)) - [Gamma Correction](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/rendering/post-processing-effects/gamma-correction.md) — Corrects brightness levels using pre-calculated lookup tables to ensure smooth perceptual transitions. - [Animation Layer Compositing](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/tile-map-renderers/raster-and-vector-tile-renderers/layer-based-composition/animation-layer-compositing.md) — Combines multiple independent visual buffers through mathematical blending to create complex final output patterns. ### Scientific & Mathematical Computing - [Integer Math Optimizations](https://awesome-repositories.com/f/scientific-mathematical-computing/integer-math-optimizations.md) — A library of high-speed mathematical and memory operations designed to maintain smooth animation frame rates. ([source](http://fastled.io/)) ### Software Engineering & Architecture - [Fixed-Point Math Optimizations](https://awesome-repositories.com/f/software-engineering-architecture/integer-arithmetic/fixed-point-math-optimizations.md) — Replaces floating-point calculations with fixed-point or integer arithmetic to maximize frame rates on low-power hardware. ### User Interface & Experience - [Color Space Converters](https://awesome-repositories.com/f/user-interface-experience/color-spaces/color-space-converters.md) — Provides utilities for converting between HSV and RGB color spaces to simplify the creation of gradients and animations. ([source](http://fastled.io/)) - [High-Bit Depth Rendering](https://awesome-repositories.com/f/user-interface-experience/color-systems/color-rendering-adjustments/high-bit-depth-rendering.md) — Implements a rendering system using 16-bit color depth and gamma correction to produce smooth brightness transitions. ([source](https://cdn.jsdelivr.net/gh/fastled/fastled@master/README.md)) ### Data & Databases - [Spatial Coordinate Mappings](https://awesome-repositories.com/f/data-databases/data-access-querying/memory-mapped-file-access/graphics-memory-mapping/pixel-buffer-memory-mapping/spatial-coordinate-mappings.md) — Maps spatial LED coordinates to linear memory arrays to enable efficient spatial transformations and blurs. - [Real-Time Lighting Visualizers](https://awesome-repositories.com/f/data-databases/real-time-data-streaming/real-time-lighting-visualizers.md) — Translates live audio input into visual lighting responses based on beat detection and frequency bands. ([source](https://fastled.io/docs/files.html)) ### Hardware & IoT - [Parallel Strip Driving](https://awesome-repositories.com/f/hardware-iot/parallel-strip-driving.md) — A hardware-accelerated system for outputting data to multiple light strips simultaneously to improve signal delivery speed. ([source](https://cdn.jsdelivr.net/gh/fastled/fastled@master/README.md)) ### System Administration & Monitoring - [Hardware Brightness Management](https://awesome-repositories.com/f/system-administration-monitoring/hardware-brightness-management.md) — Adjusts overall light output to manage power consumption and battery life without affecting individual color settings. ([source](http://fastled.io/))