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<span class="image main"><img src="../images/week14/boards.jpg" alt="boards" /></span>
<h3>RS-232 serial communication --- Հաջորդական կապ</h3>
<p>RS-232 of TIA-232 is a <a href="https://en.wikipedia.org/wiki/RS-232">standard</a> of serial electrical signal communication first introduced in 1960.
During one of our lectues Neil said that RS-232 is a reliable "ancient" standard. In order to understand what RS 232 is we need to understand what serial communication is.
In telecommunication Serial communication is called a process when data is sent consecutively biy by bit in contrast parralel communication is when data is beeing sent in bytes (8bits) via parralel links.
Serial is much slower than parralel but is cheaper and easier to impliment.</p>
<span class="image main"><img src="../images/week14/rs232.png" alt="rs232" /></span>
<p>One of characteristics of serial communication is <b>Baudrate</b> it defines the speed of transmission. In other words it's the number of bits passing in one second.</p>
<h3>Programming --- Ծրագրավորում</h3>
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<br>- actuate and automate your machine
- document the group project and your individual contribution
</p>
<h3>Developing a plan --- Կազմակերպում</h3>
Let me intruduce our team:
<br><a href="http://fabacademy.org/2019/labs/dilijan/students/mariam-nahapetyan/">Mariam Nahapetyan</a>
<br><a href="http://fabacademy.org/2019/labs/dilijan/students/miqayel-aramyan/">Miqael Aramyan</a>
And me.
<p> Our team considered several options of machine:
<br>CNC mill
<br>2D plotter
<br>3D printer
<br>An automatic 3D scanner
<br>We even thought of a machine to automate Dilijan Fablab's entrance gates.
<br>At some point we realised that everyone of us acqured the capabilities and confidence to make each and all of them! And that confidence in my estimation is one of the greatest
assets we want to develop. Making something by yourself is one thing as a team completly different thing.
Ladies and gentelman this id the machine we made!
<div style="text-align: center;"><video width="853" height="480" controls>
<source src="../machine.mp4" type="video/mp4">
Your browser does not support the video tag.
</video></div>
<br>It might appear rather simple and it's function not clear at first glance, but it's very inteligent and useful toop. It has actuation (stepper motor),
two end switches and a control (brains) and a custom made camera holder. And all of this works!! :)
This machine could serve as a <a href="https://en.wikipedia.org/wiki/Camera_dolly">camera dolly</a>:</p>
<div style="text-align: center;"><video width="853" height="480" controls>
<source src="../dolly.mp4" type="video/mp4">
Your browser does not support the video tag.
</video></div>
<p>And as a <a href="https://www.photigy.com/school/the-best-way-to-do-a-focus-stacking-macro-focusing-rails-vs-focus-variation/">focusing rail</a>.</p>
<span class="image main"><img src="../images/week15/lens.jpg" alt="lens" /></span>
<span class="image main"><img src="../images/week15/cam.jpg" alt="cam" /></span>
<span class="image main"><img src="../images/week5/endmills.jpg" alt="endmills" /></span>
<p></p>
<span class="image main"><img src="../images/week15/sketch.jpg" alt="sketch" /></span>
<span class="image main"><img src="../images/week15/cad.jpg" alt="cad" /></span>
<span class="image main"><img src="../images/week15/3dprint.jpg" alt="3dprint" /></span>
<p><br>During our output devices week one of the things we learned was how to program and drive motors. Also we learned how to
connect buttons, and sensors to a system during input devices week.
<p>
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