{"id":15648152,"url":"https://github.com/noracodes/fives","last_synced_at":"2025-04-30T13:52:47.820Z","repository":{"id":84925709,"uuid":"257160069","full_name":"NoraCodes/fives","owner":"NoraCodes","description":"555 timer module for VCVRack","archived":false,"fork":false,"pushed_at":"2020-05-02T19:19:03.000Z","size":474,"stargazers_count":8,"open_issues_count":0,"forks_count":0,"subscribers_count":4,"default_branch":"master","last_synced_at":"2025-03-30T16:46:28.498Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/NoraCodes.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-04-20T03:20:47.000Z","updated_at":"2021-02-22T20:30:25.000Z","dependencies_parsed_at":null,"dependency_job_id":"bd73ebcd-2a33-428b-9907-b49880c45acb","html_url":"https://github.com/NoraCodes/fives","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/NoraCodes%2Ffives","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/NoraCodes%2Ffives/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/NoraCodes%2Ffives/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/NoraCodes%2Ffives/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/NoraCodes","download_url":"https://codeload.github.com/NoraCodes/fives/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":251714956,"owners_count":21631809,"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":[],"created_at":"2024-10-03T12:23:45.279Z","updated_at":"2025-04-30T13:52:47.798Z","avatar_url":"https://github.com/NoraCodes.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Fives\n## VCVRack modules by NoraCodes\n\n**Fives** is a collection of modules based on the specified physical operation of the\nworld's most popular integrated circuit: the **LM555 multimode timer**.\n\n![The Fives Astable and Fives Astable C next to each other.](res/lineup.png)\n\n### Why 555?\n\nThe 555 isn't generally used as an oscillator in modular instruments because, while it can\neasily run in astable mode and generate a clean square wave with a variable duty cycle,\nvarying the frequency without changing the duty cycle requires a variable\ncapacitor, which are expensive and hard to integrate.\n\nThere is, of course, no such limitation in the world of VCVRack; variable caps are free and\nnever break down, and voltage-controlled variable capacitors are just as easy.\n\nSo, Fives provides modules that closely model what a real 555-based module would look like\nas well as modules that apply the power of CV and impossibly accurate and fast variable\ncapacitors to the same mathematical model.\n\n### Fives Astable\n\nFives Astable is a low-frequency oscillator and clock generator based on a\nphysical model of the LM555 timer chip in an astable configuration.\nIt has two knobs - ON and OFF - which control the high and low time of the oscillator,\nand a RESET input which, when above 5 volts, kills the output.\n\n![Two Fives Astable modules, one resetting the other.](res/astable-sample.png)\n\nThe total period of oscillation is the on time plus the off time; there is no single\nfrequency control. It can oscillate as quickly as 9 Hz and as slowly as 0.1Hz\n(once every 10 seconds) with a duty cycle around 66%.\n\nThe UNI/BI toggle transposes the waveform from 0v to 10v (default) to -5v to 5v (BI mode).\n\n### Fives Astable C\n\nThe Fives Astable C is a voltage-controlled audio-rate oscillator which extends the slimmer,\nsimpler Fives Astable with a variable capacitor and CV inputs for the ON, OFF, and PERIOD inputs.\nThe added PERIOD variable capacitor allows the Fives Astable C to oscillate as quickly as 2.6 kHz\nor as slowly as 26 Hz, with a duty cycle as low as 56.5%.\n\nIt is tuned to take 1V/Oct input on the PERIOD input by default, with all parameter knobs at 33.3%.\nModifying any of the parameters will detune the module, but that can be fun too.\n\n![A Fives Astable C and a Fives Astable, showing the use of the PERIOD parameter.](res/astable-c-sample.png)\n\nCV applied to the inputs are scaled by the knob parameters.\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnoracodes%2Ffives","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnoracodes%2Ffives","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnoracodes%2Ffives/lists"}