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docs/Instruction/images/DRV8846/custom_diagram_1_DRV8846.gif

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docs/Instruction/images/DRV8846/hor_air_gun.jpg

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docs/Instruction/images/DRV8846/reflow_oven.jpg

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# DRV8846_Stepperboard
## DRV8846
> 18-V, 1.4-A bipolar stepper motor driver with 1/32 microstepping and smart tune adaptive decay
![](../images/DRV8846/rge0024b.png_small)
![](../images/DRV8846/custom_diagram_1_DRV8846.gif)
[site](https://www.ti.com/product/DRV8846)
[datasheet](https://www.ti.com/lit/ds/symlink/drv8846.pdf?ts=1649302105682&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDRV8846)
## Eagle
## Order board
## Soldering
### Hot air gun
![](../images/DRV8846/hor_air_gun.jpg)
!!! Attention
Rotation is wrong in this picture. Turn 90 Degrees to left to face the name on the chip and the text on the silk print at the same side.
### Reflow oven
![](../images/DRV8846/reflow_oven.jpg)
# Machine Building Parts List
## mechanical components
## fasteners
nuts
bolts
washers
heat-set inserts
## framing
T-Slotted Framing Rails
- [Misumi frame 2020 L=300]((https://jp.misumi-ec.com/vona2/detail/110302683830/?list=PageCategory))
## Drive
- [Timming belt GT2](https://ja.aliexpress.com/item/32546490272.html?gatewayAdapt=glo2jpn&spm=a2g0o.order_list.0.0.21ef585a66UU94)
- [Velt tensioner spring](https://ja.aliexpress.com/item/32903348346.html?gatewayAdapt=glo2jpn&spm=a2g0o.order_list.0.0.21ef585a66UU94)
- Shaft
- rods?
## Guide
- shafts
- slides
## Electronic components
### Motor Driver
#### Modules
#### Parts
......@@ -48,5 +48,9 @@
## Output devices
- [Neopixel on ATtiny3216](http://yuichitamiya.fabcloud.io/fabacademy2020/projects/NeoPixel_ATtiny3216/)
## Machine Building
- [Machine Building Parts List](./tips/machine_building_parts_list.md)
- [DRV8846_Stepperboard](./tips/DRV8846_Stepperboard.md)
## Other Tips list
- [Tips List 2021](http://academany.fabcloud.io/fabacademy/2021/labs/kannai/site/instruction/tips_list/)
# 11. Mechanical design / Machine design
This week I worked on defining my final project idea and started to getting used to the documentation process.
## Midterm review
## Research
> Prepare for global evaluation by having your local instructor
review your preceding assignments and final project site
"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
- Ready for global evaluation -> 2 assignment completed
- Instructor review your status
- if student have site of final project
- everybody got checked
> "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
## Mechanical Design
## Useful links
### Group Assignment
> - design a machine that includes mechanism+actuation+automation+application
> - build the mechanical parts and operate it manually
> - document the group project and your individual contribution
- [Jekyll](http://jekyll.org)
- [Google](http://google.com)
- [Markdown](https://en.wikipedia.org/wiki/Markdown)
## Code Example
- mechanism: parts that move relative to each other
- actuation: something that can make it move
- automation: intelligence that coordinates the motion
- application: it does something there's a purpose. it can't just be motion there has to be a reason for it.
Use the three backticks to separate code.
```
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
```
## Machine Design
## Gallery
### Group Assignment
> - actuate and automate your machine
> - document the group project and your individual contribution
![](../images/sample-photo.jpg)
## Video
## ToDo
### From Vimeo
### Group page
<iframe src="https://player.vimeo.com/video/10048961" width="640" height="480" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
<p><a href="https://vimeo.com/10048961">Sound Waves</a> from <a href="https://vimeo.com/radarboy">George Gally (Radarboy)</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
- Where to document Machine project group page
- [Dilijan Fab Lab (Dilijan, Armenia)](https://fabacademy.org/2022/labs/dilijan/Armania)
- [Fab Lab Kannai (Yokohama, Japan)](https://fabacademy.org/2022/labs/kannai/)
- Add the link to group page in lab site's top page
### From Youtube
### Slide & Video
<iframe width="560" height="315" src="https://www.youtube.com/embed/jjNgJFemlC4" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
#### Slide
> Made your slide> 1920 x 1080 pixels with your name, project name, Fab Lab name, a photo/render/sketch of your project, a brief description of what your project is/does
## 3D Models
#### Video
> Made a ~1 minute (10MB/1080p) video of you explaining your project
[ffmpeg](http://academy.cba.mit.edu/classes/computer_design/video.html)
```
HTML5 MP4 ffmpeg encoding
<div class="sketchfab-embed-wrapper"><iframe width="640" height="480" src="https://sketchfab.com/models/658c8f8a2f3042c3ad7bdedd83f1c915/embed" frameborder="0" allow="autoplay; fullscreen; vr" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe>
variable bit rate 1080p MP3:
<p style="font-size: 13px; font-weight: normal; margin: 5px; color: #4A4A4A;">
<a href="https://sketchfab.com/models/658c8f8a2f3042c3ad7bdedd83f1c915?utm_medium=embed&utm_source=website&utm_campaign=share-popup" target="_blank" style="font-weight: bold; color: #1CAAD9;">Dita&#39;s Gown</a>
by <a href="https://sketchfab.com/francisbitontistudio?utm_medium=embed&utm_source=website&utm_campaign=share-popup" target="_blank" style="font-weight: bold; color: #1CAAD9;">Francis Bitonti Studio</a>
on <a href="https://sketchfab.com?utm_medium=embed&utm_source=website&utm_campaign=share-popup" target="_blank" style="font-weight: bold; color: #1CAAD9;">Sketchfab</a>
</p>
</div>
ffmpeg -i input_video -vcodec libx264 -crf 25 -preset medium -vf scale=-2:1080 -acodec libmp3lame -q:a 4 -ar 48000 -ac 2 output_video.mp4
fixed bit rate 1080p MP2:
ffmpeg -i input_video -vcodec libx264 -b:v 1000k -vf scale=-2:1080 -acodec mp2 -b:a 256k -ar 48000 -ac 2 output_video.mp4
```
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