added indicator panel
[physical.git] / audio / 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 Warning: All devices are connected in parallel. Make sure that audio
39 producing device can handle combined load. See:
40 https://en.wikipedia.org/wiki/Series_and_parallel_circuits#Resistance_units_2
41
42 [[file:make,%202.png]]
43
44 Device consists of body and cover that are held together by single
45 screw at the center:
46
47 [[file:cover,%202.png]]
48
49 * Download
50
51 - [[file:hub.FCStd][FreeCAD project]]
52
53
54 [[file:body.png]]
55
56 - [[file:body.stl][STL file]]
57
58 -----
59
60 [[file:cover.png]]
61
62 - [[file:cover.stl][STL file]]