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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>c4 | homepage</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <meta name="robots" content="index,follow"/> <meta name="author" content="webmaster"/> <meta name="date" content="2009-06-28"/> <meta name="description" content="Homepage des Chaos Computer Club Cologne"/> <meta name="keywords" content="Chaos Computer Club, CCC,Chaos Computer Club, CCC, Cologne, C4, Hacker, Köln, U23, OpenChaos, Chaosradio, Datenschleuder"/> <meta name="DC.Date" content="2009-06-28"/> <meta name="DC.Language" content="de"/> <meta name="DC.Coverage" content="chaos computer club cologne"/> <meta name="DC.Title" content="c4 | homepage"/> <meta name="DC.Description" content="Homepage des Chaos Computer Club Cologne"/> <link rel="icon" href="/images/chaosknoten-icon-trans-16.png" type="image/png"/> <meta name="google-site-verification" content="2ozQIr-cQ-sJzGeJT_iTkS147fs3c5R3I1i6Dk_YLwA"/> <link rel="alternate" type="application/rss+xml" title="C4 Updates" href="https://koeln.ccc.de/backend/updates.rdf"/> <link rel="stylesheet" title="bs4" type="text/css" href="/styles/bootstrap.min.css"/> <link rel="stylesheet" type="text/css" href="/styles/barcode.css"/> <link rel="stylesheet" type="text/css" href="/styles/clubstatus.css"/> <meta name="http-equiv" content="text/javascript"/> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/> </head> <body> <main class="container"> <header class="blog-header py-3"> <div class="row align-top align-items-center"> <div class="col-3 col-lg-2 mb-1"> <img width="116" alt="C4 Logo" height="116" src="/images/c4-logo.svg" style="filter:invert(50%) sepia(100%) saturate(100%) hue-rotate(270deg) brightness(80%);"/> </div> <div class="col-9 col-md-6 col-lg-8 text-center"> <h1> <a href="/" class="d-none d-md-inline">Chaos Computer Club Cologne e.V.</a> <a href="/" class="d-inline d-md-none">CCC Cologne</a> </h1> </div> <div class="col-md-3 col-lg-2 d-md-flex d-none justify-content-end mb-1"> <img width="116" height="116" alt="CCC Logo" src="/images/Logo_CCC.svg" style="filter:invert(50%) sepia(100%) saturate(100%) hue-rotate(270deg) brightness(80%);"/> </div> </div> <div class="nav-scroller"> <nav class="nav d-flex justify-content-between"> <a class="text-muted" title="C4" href="/c4/index.xml"> C4</a> <a class="text-muted" title="Archiv" href="/ablage/index.xml"> Archiv</a> <a class="text-muted" title="Sitemap" href="/sitemap/index.xml"> Sitemap</a> <a class="text-muted" title="FAQ" href="/c4/faq/index.xml"> FAQ</a> <a class="text-muted" title="u23" href="//wiki.koeln.ccc.de/index.php?title=U23"> u23</a> <a class="text-muted" title="Videos" href="http://media.ccc.de/"> Media</a> <a class="text-muted" title="Kontakt" href="/impressum/index.xml"> Impressum</a> </nav> </div> <hr/> </header> <div class="row align-items-top py-3"> <div id="content" class="col-12 col-md-9"> <link rel="stylesheet" type="text/css" href="/styles/upcoming-events.css"/> <div class="card flex-md-row mb-4 box-shadow h-md-250 w-100"> <table class="table mb-0 small text-muted" style="line-height:1"> <thead> <tr> <th colspan="2">Nächste Veranstaltungen</th> </tr> </thead> <tbody class="upcoming-events-table-body"> <tr class="event-row"> <td>Jeden Donnerstag (~19 Uhr)</td> <td> <a href="https://koeln.ccc.de/c4/faq/index.xml#offenerabend">Offener Abend</a> </td> </tr> <tr class="event-row"> <td>Jeden 1. Mittwoch im Monat (19.15 Uhr)</td> <td> <a href="https://rust.cologne/">Rust User Group Cologne</a> </td> </tr> <tr class="event-row"> <td>Jeden 3. Mittwoch im Monat (19 Uhr)</td> <td> <a href="https://www.osamc.de/">OSAMC: Open Source Audio Meetup Cologne</a> </td> </tr> </tbody> </table> </div> <h4 class="text-muted"> <a href="updates/index.html">Letzte Meldungen Chaos Computer Club Cologne e.V.</a> </h4> <div class="jumbotron p-3 p-md-5 text-black rounded bg-light"> <div class="col-md-12 px-0"> <h2 class="display-8 font-italic"> <a href="/updates/2025-03-29_Tag_des_offenen_Hackspaces.html" class="text-muted">Tag des offenen Hackspaces im C4 – Türen auf ab 15:00 Uhr</a> </h2> <div class="lead mb-0 small">2025-03-28</div> <p class="lead my-3"> Am Samstag, dem 29.03.2025, öffnet der Chaos Computer Club Cologne (C4) ab 15:00 Uhr seine Türen für alle Technikbegeisterten, Neugierigen und Kaffeeliebhaber. <a href="/updates/2025-03-29_Tag_des_offenen_Hackspaces.html" class="small"> more </a> </p> </div> </div> <div class="card flex-md-row mb-4 box-shadow h-md-250"> <div class="card-body d-flex flex-column align-items-start"> <h3 class="mb-0"> <a href="/updates/2025-03-21_OC_Schweigen_ist_immer_die_beste_Option.html" class="text-muted">OpenChaos am Donnerstag, 27. März: Schweigen ist immer die beste Option</a> </h3> <div class="mb-1 text-muted small">2025-03-21</div> <p class="card-text mb-auto"> Die Rechtsanwältin Anna Busl erläutert uns mit professionellen Hinweisen die Rechte und Pflichten bei Auseinandersetzungen mit dem Staat. <a href="/updates/2025-03-21_OC_Schweigen_ist_immer_die_beste_Option.html" class="small"> more </a> </p> </div> </div> <div class="card flex-md-row mb-4 box-shadow h-md-250"> <div class="card-body d-flex flex-column align-items-start"> <h3 class="mb-0"> <a href="/updates/2025-01-23_OC_PsyLink_neural_interface.html" class="text-muted">Open Chaos am 30: Januar. PsyLink: Controlling computers with nerve signals</a> </h3> <div class="mb-1 text-muted small">2025-01-22</div> <p class="card-text mb-auto"> At the next OpenChaos Yuni will talk about PsyLink: An open source hardware project that measures nerve/muscle impulses on the skin and uses those to control computers. <a href="/updates/2025-01-23_OC_PsyLink_neural_interface.html" class="small"> more </a> </p> </div> </div> <div class="card flex-md-row mb-4 box-shadow h-md-250"> <div class="card-body d-flex flex-column align-items-start"> <h3 class="mb-0"> <a href="/updates/2024-12-25_Congress-Everywhere.html" class="text-muted">38C3 - Congress Everywhere</a> </h3> <div class="mb-1 text-muted small">2024-12-25</div> <p class="card-text mb-auto"> Vom 27.12. bis zum 30.12. findet dieses Jahr der 38. Chaos Communication Congress (38C3) in Hamburg statt. <a href="/updates/2024-12-25_Congress-Everywhere.html" class="small"> more </a> </p> </div> </div> <div class="card flex-md-row mb-4 box-shadow h-md-250"> <div class="card-body d-flex flex-column align-items-start"> <h3 class="mb-0"> <a href="/updates/2024-11-26_Einladung_kameras-stoppen_VG-koeln.html" class="text-muted">Kameras Stoppen vor Gericht: Kölner Polizei muss sich für Videoüberwachung des Kölner Stadtgebiets rechtfertigen</a> </h3> <div class="mb-1 text-muted small">2024-11-26</div> <p class="card-text mb-auto"> Am 28. November wird am Verwaltungsgericht Köln über die polizeiliche Videoüberwachung verhandelt. Wir laden euch ein der Verhandlung beizuwohnen! <a href="/updates/2024-11-26_Einladung_kameras-stoppen_VG-koeln.html" class="small"> more </a> </p> </div> </div> <div class="card flex-md-row mb-4 box-shadow h-md-250"> <div class="card-body d-flex flex-column align-items-start"> <h3 class="mb-0"> <a href="/updates/2024-11-19_OC_Strahlenforschung_Mondmission.html" class="text-muted">OpenChaos am Donnerstag, 28. November: Strahlungsforschung für zukünftige Mondmissionen im Rahmen des Artemis Programms</a> </h3> <div class="mb-1 text-muted small">2024-11-19</div> <p class="card-text mb-auto"> Ionisierende kosmische Strahlung ist eine der großen Gefahren für Astronauten im Weltall. Wie kann diese nicht spürbare Gefahr gemessen und sichtbar gemacht werden? <a href="/updates/2024-11-19_OC_Strahlenforschung_Mondmission.html" class="small"> more </a> </p> </div> </div> <h4 class="text-muted"> <a href="https://ccc.de/"> Meldungen vom CCC: </a> </h4> </div> <div class="col-md-3 small"> <h6 class="text-muted"> Aktueller Status des Raums</h6> <script type="text/javascript" src="/styles/clubstatus.js">//</script> <div class="club-status pb-1 club-status-message-hide loading"> <noscript> <style> .club-status { display:none; } </style> </noscript> <div class="club-status-loading text-bubble">Der Clubstatus wird geladen...</div> <div class="club-status-open text-bubble">Der Club ist offen<span class="club-status-message">:</span> <div class="club-status-message d-block" data-status-message="">It's a secret to everybody.</div> </div> <div class="club-status-closed text-bubble">Der Club ist geschlossen<span class="club-status-message">:</span> <div class="club-status-message d-block" data-status-message="">[...] even the word "hopeless" has "hope" in it. Plus, if you rearrange the letters it spells "peeslosh".</div> </div> <div class="club-status-unknown text-bubble">Der Clubstatus konnte nicht geladen werden.</div> </div> <div align="center" class="embed-responsive embed-responsive-16by9 mb-2"> <video controls="true"> <source src="https://cdn.media.ccc.de/contributors/koeln/open_chaos/2025/webm-sd/openchaos-2501-eng-PsyLink_webm-sd.webm"/> </video> </div> <form method="get" action="/search" enctype="application/x-www-form-urlencoded"> <div class="form-row align-items-center"> <div class="col-auto"> <input maxlength="200" size="8" value="" placeholder="Suche" type="text" name="query" class="form-control-sm mb-2"/> <input value="all" type="hidden" name="metaname"/> </div> <div class="col-auto"> <button type="submit" class="btn btn-sm btn-outline-secondary mb-2"> Search </button> </div> </div> </form> <h6 class="text-muted"> Kontakt </h6> <div class="text-muted">Direkter Draht: <b> <a href="mailto:mail@koeln.ccc.de">mail@koeln.ccc.de</a> </b> </div> <table> <tr class="small text-muted"> <td>irc:</td> <td> <b> <a href="irc://irc.hackint.org/#cccc">#cccc auf hackint</a> (<a href="https://chat.hackint.org/?join=cccc">web</a>)</b> </td> </tr> <tr class="small text-muted"> <td>matrix:</td> <td> <b> <a href="https://matrix.to/#/#cccc:hackint.org">#cccc:hackint.org</a> </b> </td> </tr> </table> <div class="text-muted py-1">(Bei Anfragen bitte ERST das <a href="/c4/faq/index.xml"> <b>F.A.Q.</b> </a> lesen.)</div> <div class="py-2"> <div class="text-muted"> <a href="/impressum/privacy.xml">Datenschutz / Privacy Policy</a> </div> <div class="text-muted"> <a rel="me" href="https://chaos.social/@c4">Mastodon</a> </div> </div> <h6 class="text-muted"> Newsletter </h6> <div class="text-muted"> Oder immer up-to-date mit unserem Newsletter. </div> <a href="https://mail.koeln.ccc.de/mailman3/postorius/lists/update.koeln.ccc.de/" class="btn btn-sm btn-outline-secondary mb-2">Zur Newsletter-Anmeldung</a> </div> </div> </main> <footer class="blog-footer py-5"/> <script type="text/javascript" src="/styles/bootstrap.min.js">//</script> <script type="text/javascript" src="/styles/popper.min.js">//</script> </body> </html>