Week05. Electronics production¶

This week, I learn about the following.

• In the group assignment, investigate the characteristics of the milling machine.

• Create a writer for the circuit board used in the final project.

1. Research in Group assignment¶

1-1. Envilonment¶

• Place

  • FabLab Kannai

• Participant

  • Yuichi Tamiya (Local Instructor)
  • Kota Tomaru
  • Takayuki Sakai
  • Yozi Shimakawa

• Cut Machine

  • MODELA MDX-15
    • 
    • Instead of selling the site.

• Cut Tool

  • 1/64 SE 2FL
    • 
  • 1/32 SE 2FL
    • 
  • measure is inch
    • 1/64 inch = 0.397 mm
    • 1/32 inch = 0.794 mm
  • SE mean Square End
  • 2FL mean 2 blades

• Used Software

  • fab modules

1-2. Measuring cut line¶

fabmodules generates machining paths from monochrome images.
Therefore, what kind of path is generated when actually used is examined.
Also, confirm the actual processing result.

trace & interior image to be processed were prepared.

• used trace
  • 

• used interior

  • 

• When setting fabmodules and machining at a depth of 0.3 mm,
  it was only able to scrape the surface as it scratched.

  • 

• When it was set to 0.4 mm, it was scraped.
  However, whether the processed surface was tilted, the left side was not yet scraped.

  • 

• So we decided to process on the right side.
  The result was beautifully scraped.

  • 

• The cut position is like this

  • 

The result is as follows.¶

• It seems good to scraped with 0.4mm.
  • Be careful as it may not be possible to shave depending on the position.
  • The position is recommended in the center.
• Concave machining pass is generated from 0.016 inch.
• Processing of convex surfaces is almost done well, but it is better to leave as much as concave.

2. Electronics Prduction¶

I decided to create Hello.ISP.44.res.cad with Electronics Production.
FabTiny ISP was recommended, but I heard that it is not stable.

• used trace
  • 

• used interior

  • 

• machine & tool is same used in group assignment

2-1. Substrate processing¶

1. fabmodules setting (trace)

   • cut depth = 0.4mm

2. fabmodules setting (interior)

   • cut depth = 1.8mm
     • cut each 0.6mm

3. check & cleaning

   • 

4. Preparation for soldering

   • Search
     • 
   • Line up
     • 

5. Soldering

   • 

2-2. Programing Writer¶

1. I made the settings according to Tutorial(for Windows).

   • FabISP Tutorial
   • Local Instoructors Site (Week4)
     • Wiring etc. when using Arduino are listed in detail

2. Wireing

   • 

3. It does not work

   • I also tried Ubuntu on Windows, but I could not do it.
     • 

4. Recheck

   • There was a part that was not soldered.(no image)

5. Resoldering

   • 

6. Resetting

   • I finally succeeded by making a Make from the Windows command prompt.
   • 
   • 
   • 

7. Looking for USBtiny in device manager

   • 

8. Hero shot

9. 

I do too many things on the way and I do not know how I came this way.
I would like to keep track of what I did, so that it will not happen from the next time.

2-3. Probably the necessary application¶

• Adafluit Driver
• GNU Make
• avrdude
  • need setting system path
• WINAVR
• Windows USBtinyISP signed driver