{"id":13569917,"url":"https://github.com/fdb/frequensea","last_synced_at":"2026-01-17T12:22:21.428Z","repository":{"id":24631994,"uuid":"28041197","full_name":"fdb/frequensea","owner":"fdb","description":"Visualizing the frequency spectrum.","archived":false,"fork":false,"pushed_at":"2025-03-24T09:40:35.000Z","size":44946,"stargazers_count":170,"open_issues_count":12,"forks_count":18,"subscribers_count":18,"default_branch":"master","last_synced_at":"2025-03-29T06:42:38.481Z","etag":null,"topics":["c","fft","hackrf","lua","rtl-sdr","vr"],"latest_commit_sha":null,"homepage":null,"language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/fdb.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2014-12-15T14:54:48.000Z","updated_at":"2024-12-04T20:06:46.000Z","dependencies_parsed_at":"2023-01-14T01:30:15.408Z","dependency_job_id":null,"html_url":"https://github.com/fdb/frequensea","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fdb%2Ffrequensea","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fdb%2Ffrequensea/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fdb%2Ffrequensea/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fdb%2Ffrequensea/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/fdb","download_url":"https://codeload.github.com/fdb/frequensea/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247134442,"owners_count":20889398,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["c","fft","hackrf","lua","rtl-sdr","vr"],"created_at":"2024-08-01T14:00:45.882Z","updated_at":"2026-01-17T12:22:21.418Z","avatar_url":"https://github.com/fdb.png","language":"C","readme":"## Frequensea\n\nFrequensea is an open-source toolkit for visualizing the electromagnetic spectrum.\n\n![A sea of FFT data](https://raw.github.com/fdb/frequensea/master/screenshots/fft-sea.png)\n\nWatch the [Frequensea video introduction](https://youtu.be/u6H1DatxLAc).\n\n## Features\n- Fast core written in C, with Lua scripting on top.\n- Support for RTL-SDR and HackRF devices.\n- Support for Oculus Rift for viewing the spectrum in virtual reality.\n- Support for OSC to communicate with other applications or devices.\n- Basic building blocks for sampling, filtering and visualizing RF data.\n\n## Installing dependencies (OS X)\n\n    brew update\n    brew install cmake glew fftw librtlsdr hackrf libpng libsndfile pkgconfig homebrew/versions/glfw3\n\n## Installing dependencies (Ubuntu 14.04 LTS)\n\n    sudo apt-get install -y git cmake gcc g++ make libfftw3-dev libpng-dev libusb-1.0.0-dev pkg-config xorg-dev libglu1-mesa-dev libopenal-dev libglew-dev libhackrf-dev librtlsdr-dev pkg-config\n\n    # There is no GLFW3 package so install from source\n    wget https://github.com/glfw/glfw/releases/download/3.1.1/glfw-3.1.1.zip\n    unzip 3.1.1.zip\n    cd glfw-3.1.1\n    mkdir build\n    cd build\n    cmake ..\n    make\n    sudo make install\n    sudo ldconfig\n\n## Installing dependencies (Raspberry Pi - Raspbian Jessie)\n\n    sudo apt-get install -y git cmake gcc g++ make libfftw3-dev libpng-dev libusb-1.0.0-dev pkg-config xorg-dev libglu1-mesa-dev libopenal-dev libglew-dev libhackrf-dev librtlsdr-dev libglfw3-dev\n\n    # Raspberry Pi doesn't support GLX, so until that's supported,\n    # we'll use the software rendering packages.\n    # Note that I found that installing mesa can *remove* libglfw3-dev,\n    # which we need, so if you get errors against that make sure\n    # it's installed.\n    sudo apt-get install -y libgl1-mesa-swx11 libglu1-mesa-dev libglew-dev\n\n    # Disable default kernel driver\n    sudo modprobe -r dvb_usb_rtl28xxu\n\nNote that you might need to run as root to claim the graphics driver, especially if you don't use the default \"pi\" user.\n\n## Building\n\n    mkdir build\n    cd build/\n    cmake ..\n    make\n\n## Running\n\n    ./frequensea ../lua/static.lua\n\nWith the Oculus:\n\n    ./frequensea --vr ../lua/static.lua\n\nSave the output to a PNG sequence:\n\n    ./frequensea --capture ../lua/animate-camera.lua\n\n## Build and Run\n\n    make \u0026\u0026 ./frequensea ../lua/static.lua\n\n## Documentation\n\n- API.md contains all available Frequensea calls.\n- Examples are in the \"lua\" folder.\n","funding_links":[],"categories":["C"],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffdb%2Ffrequensea","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ffdb%2Ffrequensea","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffdb%2Ffrequensea/lists"}