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Commits (2)
......@@ -160,9 +160,9 @@
<br>2 M6x90mm bolts(400AMD)+ 10 M6x35mm bolts(1000AMD) + 13 M6 nuts(500AMD) + 23 M5x20mm bolts(2300AMD) + 31 M5 nuts(465AMD)=4665AMD (9.7$)
<br>5 female 2x2 2.54mm (320AMD)+ 5 male 2x2 2.54mm (250AMD)+ 2 female 2x3 2.54mm (320AMD)+ 3 male 2x3 2.54mm (250AMD)=4240AMD (8.87$) ?
<br>4 thrust ball bearings 51105 3000AMD (6.2$)
<br>2 ATtiny44 microcontrollers 1400AMD (2.9$)
<br>2 <a href="https://www.digikey.com/product-detail/en/ATTINY44A-SSU/ATTINY44A-SSU-ND">ATtiny44</a> microcontrollers 1400AMD (2.9$)
<br>2 LM3480IM3-5.0v regulator 800AMD (1.7$)
<br>2 A4953 full bridge 760AMD (1.6$)
<br>2 <a href="https://www.digikey.com/product-detail/en/allegro-microsystems-llc/A4953ELJTR-T/620-1428-1-ND">A4953</a> full bridge 760AMD (1.6$)
<br>2m copper cable 500amd (1.1$)
<br>9 smd resistors(45AMD) + 6 smd capacitors(30AMD) + 4 LDR 5528 Q5(400AMD)=475AMD (1$)
<br>1m ribbon cable 478AMD (1$)
......
......@@ -52,13 +52,13 @@
<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!
assets we want to develop through our study. Making something by yourself is one thing as a team completly different.
Ladies and gentelman this is 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),
<br>At first glance it might appear rather simple and it's function not clear, but it's very inteligent and useful tool. 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>
......@@ -69,15 +69,24 @@
<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>
<p><br>During our output devices week one of the things we learned was how to program and drive motors. During that week I found a floppy drive and a bipolar stepper motor with
a rail and it's timing belt I tested Neil's hello.stepper.bipolar.44 board with those and was very excited with what I learned. </p>
<span class="image main"><img src="../images/week15/rail.jpg" alt="rail" /></span>
<p>A week before (input devices week) we learned how to
connect buttons, and sensors to a system. By the way this two weeks changed my attitude towards automation. Before I considered automation as something expensive and available only to smart people,
now I consider automation as something fun, affordable and very easy. We took that rail and used it as a foundation for our machine.
The PCB board I designed for my <a href="../assignments/final.html">final project</a>
was initially designed to drive 2 DC motors, it has two <a href="https://www.digikey.com/product-detail/en/allegro-microsystems-llc/A4953ELJTR-T/620-1428-1-ND">A4953</a>
full bridge motor drivers that are controlled by <a href="https://www.digikey.com/product-detail/en/ATTINY44A-SSU/ATTINY44A-SSU-ND">ATtiny44</a> microcontroller.
This board is overengineered for our machine because it has 2nd ATtiny44 to read 4 analog inputs and send commands to other ATtiny44. I made two of this boards one as a backup,
and since it was not used I decided it's better to save both components and time and use my spare board to drive our machine.
</p>
<p>Our rail needed a part to </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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</section>
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