Commit 1d46ef4d authored by Daniela Felix's avatar Daniela Felix
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update week 11 DF

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<blockquote>
<p><b>Group assignment</b></p>
<ul>
<li> review the safety data sheets for each of your molding and casting materials,
<li> Review the safety data sheets for each of your molding and casting materials,
then make and compare test casts with each of them</li>
</ul>
</blockquote>
</header>
<hr />
<h3>End Stops Limit Switches</h3>
<P>End-stops can also be used as limit switches which prevent the machine from attempting to move beyond the physical limits of the
axis (by pausing/stopping movement when triggered), see the Endstops page for details about configuring Smoothie to use End Stops as limit switches.
</p> <br>
<span class="image"><img src="img/w9/41C+hBnFSwL.jpg" alt="" height="200"/></span></p><br>
The cnc shield offers us the necessary pins to connect our end switches but if we need to install more we could make a parallel connection
<span class="image"><img src="img/w9/end_Switches.jpg" alt="" height="400"/></span></p><br>
Connections for Arduino Mega</p><br>
<span class="image"><img src="img/w9/Grbl_Pines_arduino 2560.jpg" alt="" height="400"/></span></p>
<span class="image"><img src="img/w9/Grbl_Pines.jpg" alt="" height="600"/></span></p>
In this link you can download the GRLB cnc controller code<a href=" https://github.com/grbl/grbl" target="_Blank"> Download</a></p>
we can find the pins in each case in the GRBL file gcode_h</p>
<span class="image"><img src="img/w9/pines_grbl.jpg" alt="" height="600"/></span></p><br>
<h3>Component printing</h3>
<h4>Dremel stand</h4>
<span class="image"><img src="img/w9/imp1.jpg" alt="" height="210"/></span>
<span class="image"><img src="img/w9/imp2.jpg" alt="" height="210"/></span></p>
<h3>Improving the design</h3>
<span class="image"><img src="img/w9/imp4.jpeg" alt="" height="210"/></span>
<span class="image"><img src="img/w9/imp3.jpg" alt="" height="210"/></span></p>
<br>
<h4>Daniela</h4>
<p>Some of the materials we used during this assigment are listed bellow, you can find the data sheet and safety instructions. </p>
<h4>Decorlac Laca catalizada</h4>
<p>Lacquer designed to give a durable and resistant finish to wooden surfaces. You can find the data and safety sheet in the following link:<br>
<a href="https://www.pinturascondor.com/product/decorlac-laca-catalizada/"> <b>Pinturas condor</b> </a><br>
<span class="image fit"><img src="img/w11/s11-mold1.jpg" alt="" /></span>
</p>
<h4>Evans matt clear lacquer</h4>
<p>Multipurpose spray paint based on acrylic resins, high covering power, wide variety of colors, point and fan nozzle. We used the matt and clear one
to give a finishing to our molds.<br>
<a href="https://www.evansvanodine.co.uk/assets/sp_esp.pdf"> <b>Evans</b> </a><br>
<span class="image fit"><img src="img/w11/s11-mold3.jpg" alt="" /></span>
</p>
<h4>Smoot on - Task 16 urethane</h4>
<p>TASK™16 is a low odor, fast-setting Shore 80A/30D urethane that offers very high tear strength, impact resistance and wear resistance.<br>
You can find further information in this web site:<br>
<a href="https://www.smooth-on.com/products/task-16/"> <b>Smooth-on</b> </a><br>
<span class="image fit"><img src="img/w11/s11-mold10.jpg" alt="" /></span>
<span class="image fit"><img src="img/w11/s11-mold11.jpg" alt="" /></span><br>
Also the safety sheet:<br>
<a href="https://www.smooth-on.com/msds/files/TASK_16.pdf"> <b>Smooth-on</b> </a><br>
</p>
</p>
</div>
<hr>
......@@ -124,63 +121,9 @@
</div>
<div class="container">
<div class="row">
<div class="col-lg-8 col-lg-offset-2 col-md-10 col-md-offset-1">
<header>
<h2>Machine Design</h2>
<blockquote>
<p><b>Group assignment</b></p>
<ul>
<li> actuate and automate your machine</li>
<li> document the group project and your individual contribution</li>
</ul>
</blockquote>
</header>
<hr />
<h3>Using Raspberry Pi</h3>
<P>Raspberry Pi, is a "it's a credit card size computer that connects to your TV and a keyboard." It is a board that
supports various components necessary in a common computer. ... These ports allow you to connect the minicomputer
to other devices, keyboards, mice, and displays <br>
</p>
<span class="image"><img src="img/w9/Raspberry-Pi.jpg" alt="" height="500"/></span>
<h3>installing operating system</h3></p>
<p style=text-align:justify;>To install the operating system on our Raspberry we will use Raspberry Pi Imager that we can download from the following link
<a href="https://www.raspberrypi.org/software/" target="_Blank"> Raspberry Pi Imager</a> Once we download and install it, we can choose the operating
system that we want to install. this will be installed in a micro usb memory
</p>
For this assignment we will install the 32-bit Raspberry Pi Os which is a linux-based operating system</p>
<br>
<span class="image"><img src="img/w9/imager.jpg" alt="" height="400"/></span>
</p>
<br>
<span class="image"><img src="img/w9/rasp_desk.jpg" /></span></p>
<br>
<p>
Once the installation is finished, it is necessary that our Raspberry has an internet connection, this can be by cable or through WiFi
</p>
To control the cnc we will use an arduino in conjunction with a cnc shield, the problem with this is that we cannot send large files, so
we will use the Raspberry, for this we will install the Bcnc software, doing the following steps, remember we are in linux</p>
<br>
<h3>Installation (using pip = recommended!)</h3>
This is short overview of installation proces, for more see the bCNC installation wiki page.</p>
This is how you install (or upgrade) bCNC along with all required packages. You can use any of these commands (you need only one):</p>
</p>
<span class="image"><img src="img/w9/inst1.jpg" /></span></p>
This is how you launch bCNC:
<span class="image"><img src="img/w9/inst3.jpg" /></span></p>
<span class="image"><img src="img/w9/1.jpg" /></span></p>
</p>
</div>
<hr>
</div>
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