misc/headphone hub/index.org

   1 #+TITLE: Headphone hub
   2 #+AUTHOR: Svjatoslav Agejenko
   3 #+LANGUAGE: en
   4
   5 * (document settings) :noexport:
   6 ** use dark style for TWBS-HTML exporter
   7 #+HTML_HEAD: <link href="https://bootswatch.com/3/darkly/bootstrap.min.css" rel="stylesheet">
   8 #+HTML_HEAD: <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
   9 #+HTML_HEAD: <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/js/bootstrap.min.js"></script>
  10 #+HTML_HEAD: <style type="text/css">
  11 #+HTML_HEAD:   footer {background-color: #111 !important;}
  12 #+HTML_HEAD:   pre {background-color: #111; color: #ccc;}
  13 #+HTML_HEAD: </style>
  14
  15 * General
  16 + DISCLAIMER: I DO ELECTRONICS AND 3D DESIGN SOLELY AS A HOBBY. THERE
  17   COULD BE ERRORS THAT CAN RESULT IN ALL KINDS OF DAMAGE. USE THESE
  18   DESIGNS AT YOUR OWN RISK.
  19
  20 + This design is released under Creative Commons Zero (CC0) license.
  21
  22 + Author:
  23   - Svjatoslav Agejenko
  24   - Homepage: https://svjatoslav.eu
  25   - Email: [[mailto://svjatoslav@svjatoslav.eu][svjatoslav@svjatoslav.eu]]
  26
  27 + See also:
  28   - [[../../index.html][Other physical projects in this repository]]
  29   - [[https://www.svjatoslav.eu/projects/][Other projects hosted at svjatoslav.eu]]
  30
  31 * Project description
  32 Simple hub that allows connecting up to 4 devices via headphone
  33 jack. For example single laptop or mp3 player can power up to 3
  34 headphones.
  35
  36 [[file:make.png]]
  37
  38 Schematic diagram:
  39 [[file:schematic.png]]
  40
  41 Warning: All devices are connected in parallel. Make sure that audio
  42 producing device can handle combined load. See:
  43 https://en.wikipedia.org/wiki/Series_and_parallel_circuits#Resistance_units_2
  44
  45 [[file:make,%202.png]]
  46
  47 Device consists of body and cover that are held together by single
  48 screw at the center:
  49
  50 [[file:cover,%202.png]]
  51
  52 * Download
  53
  54 - [[file:hub.FCStd][FreeCAD project]]
  55
  56
  57 Body [[file:body.stl][STL file]]
  58 [[file:body.png]]
  59
  60
  61
  62 -----
  63 Cover [[file:cover.stl][STL file]]
  64
  65 [[file:cover.png]]