4 <title>Gyroscope stabilizer for binoculars</title>
5 <!-- 2021-01-03 Sun 22:42 -->
7 <meta name="viewport" content="width=device-width, initial-scale=1">
8 <meta name="generator" content="Org-mode">
9 <meta name="author" content="Svjatoslav Agejenko">
10 <link href="https://bootswatch.com/3/darkly/bootstrap.min.css" rel="stylesheet">
11 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
12 <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/js/bootstrap.min.js"></script>
13 <style type="text/css">
14 footer {background-color: #111 !important;}
15 pre {background-color: #111; color: #ccc;}
17 <style type="text/css">
18 /* org mode styles on top of twbs */
35 background-color: #f5f5f5;
62 display: inline-block;
74 .bs-docs-sidebar.affix {
77 @media (min-width: 768px) {
83 /* All levels of nav */
84 .bs-docs-sidebar .nav > li > a {
91 .bs-docs-sidebar .nav > li > a:hover,
92 .bs-docs-sidebar .nav > li > a:focus {
95 text-decoration: none;
96 background-color: transparent;
97 border-left: 1px solid #A1283B;
99 .bs-docs-sidebar .nav > .active > a,
100 .bs-docs-sidebar .nav > .active:hover > a,
101 .bs-docs-sidebar .nav > .active:focus > a {
105 background-color: transparent;
106 border-left: 2px solid #A1283B;
109 /* Nav: second level (shown on .active) */
110 .bs-docs-sidebar .nav .nav {
111 display: none; /* Hide by default, but at >768px, show it */
112 padding-bottom: 10px;
114 .bs-docs-sidebar .nav .nav > li > a {
121 .bs-docs-sidebar .nav .nav > li > a:hover,
122 .bs-docs-sidebar .nav .nav > li > a:focus {
125 .bs-docs-sidebar .nav .nav > .active > a,
126 .bs-docs-sidebar .nav .nav > .active:hover > a,
127 .bs-docs-sidebar .nav .nav > .active:focus > a {
132 /* Nav: third level (shown on .active) */
133 .bs-docs-sidebar .nav .nav .nav {
134 padding-bottom: 10px;
136 .bs-docs-sidebar .nav .nav .nav > li > a {
143 .bs-docs-sidebar .nav .nav .nav > li > a:hover,
144 .bs-docs-sidebar .nav .nav .nav > li > a:focus {
147 .bs-docs-sidebar .nav .nav .nav > .active > a,
148 .bs-docs-sidebar .nav .nav .nav > .active:hover > a,
149 .bs-docs-sidebar .nav .nav .nav > .active:focus > a {
154 /* Show and affix the side nav when space allows it */
155 @media (min-width: 992px) {
156 .bs-docs-sidebar .nav > .active > ul {
159 /* Widen the fixed sidebar */
160 .bs-docs-sidebar.affix,
161 .bs-docs-sidebar.affix-bottom {
164 .bs-docs-sidebar.affix {
165 position: fixed; /* Undo the static from mobile first approach */
168 .bs-docs-sidebar.affix-bottom {
169 position: absolute; /* Undo the static from mobile first approach */
171 .bs-docs-sidebar.affix .bs-docs-sidenav,.bs-docs-sidebar.affix-bottom .bs-docs-sidenav {
176 @media (min-width: 1200px) {
177 /* Widen the fixed sidebar again */
178 .bs-docs-sidebar.affix-bottom,
179 .bs-docs-sidebar.affix {
184 <script type="text/javascript">
188 $('.bs-docs-sidebar li').first().addClass('active');
190 $(document.body).scrollspy({target: '.bs-docs-sidebar'});
192 $('.bs-docs-sidebar').affix();
197 <div id="content" class="container">
198 <div class="row"><div class="col-md-9"><h1 class="title">Gyroscope stabilizer for binoculars</h1>
200 <div id="outline-container-sec-1" class="outline-2">
201 <h2 id="sec-1"><span class="section-number-2">1</span> General</h2>
202 <div class="outline-text-2" id="text-1">
204 <li>DISCLAIMER: I DO ELECTRONICS AND 3D DESIGN SOLELY AS A HOBBY. THERE
205 COULD BE ERRORS THAT CAN RESULT IN ALL KINDS OF DAMAGE. USE THESE
206 DESIGNS AT YOUR OWN RISK.
209 <li>This design is released under Creative Commons Zero (CC0) license.
214 <li>Svjatoslav Agejenko
216 <li>Homepage: <a href="https://svjatoslav.eu">https://svjatoslav.eu</a>
218 <li>Email: <a href="mailto://svjatoslav@svjatoslav.eu">svjatoslav@svjatoslav.eu</a>
225 <li><a href="../../index.html">Other physical projects in this repository</a>
227 <li><a href="https://www.svjatoslav.eu/projects/">Other projects hosted at svjatoslav.eu</a>
235 <div id="outline-container-sec-2" class="outline-2">
236 <h2 id="sec-2"><span class="section-number-2">2</span> Project description</h2>
237 <div class="outline-text-2" id="text-2">
240 <p><img src="make.png" class="img-responsive" alt="make.png">
245 Problem with powerful binoculars is that they are almost unusable
246 without tripod. High zoom factor also amplifies hand shakes.
250 Tripod is not convenient to carry around. Here is an attempt to design
251 portable gyro stabilizer that has camera tripod interface. Therefore
252 cameras and binoculars can be mounted.
258 <p><img src="make,%202.png" class="img-responsive" alt="make,%202.png">
264 Old computer hard disk platters are used as rotating discs. They are
265 attached to following disk mount:
270 <p><img src="disk%20mount%20body.png" class="img-responsive" alt="disk%20mount%20body.png">
278 <li><a href="disk%20mount.FCStd">Editable FreeCAD project</a>
280 <li><a href="disk%20mount%20body.stl">Printable STL file</a>
285 Disk platters are fixed to disk mount using glued tightly fitting top
291 <p><img src="disk%20mount%20top%20ring.png" class="img-responsive" alt="disk%20mount%20top%20ring.png">
299 <li><a href="disk%20mount%20top%20ring.stl">Printable STL file</a>
304 Discs are rotated by electric motor. Motor is cooled by electric fan.
305 Motor and fan are powered by 12V that is generated by 3 voltage upstep
306 converters running in parallel.
311 <p><img src="schematic.png" class="img-responsive" alt="schematic.png">
317 <img src="make,%201.png" class="img-responsive" alt="make,%201.png">
321 FreeCAD model of the main body:
326 <p><img src="main%20body,%201.png" class="img-responsive" alt="main%20body,%201.png">
332 <p><img src="main%20body,%202.png" class="img-responsive" alt="main%20body,%202.png">
340 <li><a href="body.FCStd">Editable FreeCAD file</a>
342 <li><a href="main%20body.stl">Printable STL file</a>
347 Rotating discs are covered and protected by top cover:
352 <p><img src="top%20cover.png" class="img-responsive" alt="top%20cover.png">
357 Bottom part of the main body has cover:
362 <p><img src="bottom%20cover.png" class="img-responsive" alt="bottom%20cover.png">
370 <li><a href="bottom%20cover.stl">Printable STL file</a>
375 Camera/binoculars can be mounted on dedicated holder that is screwed
381 <p><img src="binocular%20mount.png" class="img-responsive" alt="binocular%20mount.png">
389 <li><a href="binocular%20mount.stl">Printable STL file</a>
400 <p><img src="make,%203.png" class="img-responsive" alt="make,%203.png">
406 <p><img src="make,%204.png" class="img-responsive" alt="make,%204.png">
412 <div id="outline-container-sec-3" class="outline-2">
413 <h2 id="sec-3"><span class="section-number-2">3</span> Conclusion</h2>
414 <div class="outline-text-2" id="text-3">
416 Around half of the stabilizing effect already comes from extra weight
417 that is added to binoculars by device itself. Rotating platters
418 contribute also about as much. I had only 2 platters. I'm
419 contemplating finding more weight to rotate, or even try with old
424 Unfortunately symmetry is not perfect and small high frequency
425 vibration is added because of that.
429 </div><div class="col-md-3"><nav id="table-of-contents">
430 <div id="text-table-of-contents" class="bs-docs-sidebar">
432 <li><a href="#sec-1">1. General</a></li>
433 <li><a href="#sec-2">2. Project description</a></li>
434 <li><a href="#sec-3">3. Conclusion</a></li>
439 <footer id="postamble" class="">
440 <div><p class="author">Author: Svjatoslav Agejenko</p>
441 <p class="date">Created: 2021-01-03 Sun 22:42</p>
442 <p class="creator"><a href="http://www.gnu.org/software/emacs/">Emacs</a> 26.1 (<a href="http://orgmode.org">Org-mode</a> 9.1.9)</p>