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FastLED avatar

FastLED/FastLED

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FastLED

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.

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fastled.io
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Features

  • Addressable LED Drivers - Provides an addressable LED control library for driving pixel-addressable LED chipsets and strips across various microcontroller platforms.
  • Embedded Math Optimizations - Ships a math library optimized for high-speed execution on microcontrollers to ensure smooth LED animations.
  • Audio-Reactive Lighting Controllers - Provides a system for synchronizing light patterns with real-time audio data streams for reactive visual effects.
  • Embedded LED Animations - Creates complex visual sequences by layering animations and using high-speed math to maintain smooth frame rates.
  • Color Space Conversions - Transforms intuitive hue, saturation, and value data into RGB components for hardware output.
  • Hardware Abstraction Layers - Wraps specific LED chipset protocols into a unified interface for cross-platform microcontroller compatibility.
  • Driver Signal Optimization - Develops and tests LED drivers with precise signal timing and overclocking to increase data refresh rates.
  • Hardware Register Timing - Manipulates microcontroller hardware registers and timing to overclock data transmission and increase refresh rates.
  • Integer Math Optimizations - A library of high-speed mathematical and memory operations designed to maintain smooth animation frame rates.
  • Fixed-Point Math Optimizations - Replaces floating-point calculations with fixed-point or integer arithmetic to maximize frame rates on low-power hardware.
  • Color Space Converters - Provides utilities for converting between HSV and RGB color spaces to simplify the creation of gradients and animations.
  • Runtime Driver Orchestration - Enables switching between hardware drivers and querying their status at runtime without requiring source code recompilation.
  • Spatial Coordinate Mappings - Maps spatial LED coordinates to linear memory arrays to enable efficient spatial transformations and blurs.
  • Real-Time Lighting Visualizers - Translates live audio input into visual lighting responses based on beat detection and frequency bands.
  • Signal Optimization Utilities - Allows for the adjustment of data transmission rates through chipset timing tweaks to increase refresh rates.
  • Color Calculation Logic - Calculates and applies complex color functions to LEDs, including support for analog outputs.
  • Gamma Correction - Corrects brightness levels using pre-calculated lookup tables to ensure smooth perceptual transitions.
  • Animation Layer Compositing - Combines multiple independent visual buffers through mathematical blending to create complex final output patterns.
  • Parallel Strip Driving - A hardware-accelerated system for outputting data to multiple light strips simultaneously to improve signal delivery speed.
  • Hardware Brightness Management - Adjusts overall light output to manage power consumption and battery life without affecting individual color settings.
  • High-Bit Depth Rendering - Implements a rendering system using 16-bit color depth and gamma correction to produce smooth brightness transitions.
7,290 stars·1,738 forks·C++·mit·29 views

Star history

Star history chart for fastled/fastledStar history chart for fastled/fastled

How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

Projects sharing features with FastLED

These projects share indexed features with FastLED. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
  • wled/wledwled avatar

    wled/WLED

    18,249View on GitHub↗

    WLED is a web-based firmware designed for ESP8266 and ESP32 microcontrollers to manage addressable LED strips and matrices. It functions as a comprehensive IoT lighting automation system, providing the tools to control individual pixels, define logical segments, and execute dynamic lighting effects. The platform supports a wide range of hardware configurations, including matrix panels and non-addressable LED arrays, while offering granular control over brightness, color palettes, and animation speed. The project distinguishes itself through its extensive support for networked orchestration an

    C++esp32esp8266hacktoberfest
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  • hyperion-project/hyperion.nghyperion-project avatar

    hyperion-project/hyperion.ng

    3,702View on GitHub↗

    Hyperion is an ambient lighting controller and screen color capture engine designed to synchronize networked LED hardware with real-time video and audio content. It functions as a programmable lighting effects engine and networked server, capturing frames from system displays or USB devices to extract dominant colors for immersive lighting environments. The system distinguishes itself through a protocol-agnostic hardware abstraction layer and a coordinate-based LED mapping system that uses keystone correction for precise physical alignment. It features a modular scripting engine for custom vi

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    View on GitHub↗3,702
  • monitorcontrol/monitorcontrolMonitorControl avatar

    MonitorControl/MonitorControl

    33,517View on GitHub↗

    MonitorControl is a macOS display control utility and external monitor manager. It functions as a DDC/CI display controller that allows users to adjust the brightness and volume of third-party monitors using native Apple keyboard keys. The software mimics native macOS hardware feedback by implementing a system overlay tool that renders on-screen display indicators during adjustments. It further provides the ability to synchronize brightness levels across multiple screens or replicate ambient light sensor changes to external displays. The utility includes capabilities for mapping custom keybo

    Swiftapplebrightnesscontrol
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  • arendst/tasmotaarendst avatar

    arendst/Tasmota

    24,502View on GitHub↗

    Tasmota is a universal firmware platform for ESP8266 and ESP32 microcontrollers, designed to provide local control and management of smart home hardware. It functions as an event-driven automation controller that replaces proprietary factory firmware, allowing users to manage relays, sensors, and lighting systems without relying on external cloud services. The system is built on a modular driver architecture that enables dynamic hardware configuration and peripheral support through a web-based management interface. The platform distinguishes itself through a template-driven hardware mapping s

    Carduinoautomationesp32
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Frequently asked questions

What does fastled/fastled do?

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…

What are the main features of fastled/fastled?

The main features of fastled/fastled are: Addressable LED Drivers, Embedded Math Optimizations, Audio-Reactive Lighting Controllers, Embedded LED Animations, Color Space Conversions, Hardware Abstraction Layers, Driver Signal Optimization, Hardware Register Timing.

Which projects share features with fastled/fastled?

Projects with overlapping indexed features include: wled/wled — WLED is a web-based firmware designed for ESP8266 and ESP32 microcontrollers to manage addressable LED strips and… hyperion-project/hyperion.ng — Hyperion is an ambient lighting controller and screen color capture engine designed to synchronize networked LED… monitorcontrol/monitorcontrol — MonitorControl is a macOS display control utility and external monitor manager. It functions as a DDC/CI display… arendst/tasmota — Tasmota is a universal firmware platform for ESP8266 and ESP32 microcontrollers, designed to provide local control and… ophub/amlogic-s9xxx-openwrt — This project is an OpenWrt firmware builder and specialized Linux router distribution designed to repurpose Amlogic… mackron/miniaudio — miniaudio is a single-file C audio library used for audio playback, capture, and hardware interfacing across multiple…