THE FAB ACADEMY 2014

CIRO MEJIA ELIAS


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1. Principles and practices, Project Management


2. Computer Aided Design

3. Computer Controller Cutitng


4. Electronics Production


5. 3D Scanning and Printing


6. Electronics Design


7. Computer Controlled Machining


8. Embedded Progamming


9. Molding and Casting


10. Input Devices


 11. Composites


12. Output Devices


13. Networking / Communications


14. Mechanical design


15. Machine design


16. Interface and application programming


17. Applications and Implications


18. Invention, Intellectual property, and Income


19. Project Development


Project Presentation


Electronics Design

A) Redesign the PCB "echo hello-world"

The activity is redesign the "echo hello-world" adding two components: a LED light and one button to create the board. I designed the PCB in the "Freeware" version of the "Eagle" software , this design  is divided in two stages:

Schematic Stage: The design was easy and friendly, in this stage is only  required to add the components of the software library, keeping  in mind the names and values ​​of these inputs and outputs. The steps are:

- Download the software and install it (http://www.cadsoftusa.com/download-eagle/).
- Run and select "Run Freeware".
- Create a project, right click, choose the new option and then schematic





- Add the library components.



         - To search any component, write the name and press enter



- The selected components were:

  • M06SMD (M06) /1X06-SMD / Libray: 01_SparkFun
  • ATTINY24/44/84-SSU (ATTINY24/44/84) / SOIC14 / Library: 01_attiny24_44_84
  • AVRISPSMD (AVRISP) / 2X03SMD Library: 01_fab
  • RESONATOR / EFOBM / Library: 01_fab
  • 6MM_SWITCH6MM_SWITCH (6MM_SWITCH) / 6MM_SWITCH / Library: 01_FAB_Hello
  • RESISTOR1206 (RESISTOR) / 1206 / Library: 01_SparkFun
  • LED1206 (LED) / 1206 / Library: 01_FAB_Hello
  • UNPOLARIZED_CAPACITOR1206 (UNPOLARIZED_CAPACITOR) / 1206 / Library: 01_FAB_Hello
- Link the components with the "NET " command. From the output of one component to the entry of the other compenent.



- To avoid a too complex meshing , links are made by adding names to the input or output of each component :


- Check the connections with the command: " ERC "







When the schematic design is done, we follow with the board.

Board Stage: At this stage the tracks of the board  are constructed as they will be printed .

- Go from schematic to Board



- Arrange components for better distribution .

- Create the tracks on the plate with the "Route " command



- Check the inputs and outputs of the components with the " Show" command.



Export to PNG Stage: In this stage the design is exported to PNG format in order to be printed for the "MODELA" machine.
  • Export from the Export command in Eagle software by the Image option, only layers 1 and 20.





  • Work with Corel Photo Paint, to revert the colors and take the measurements of the board.


B) Board Printing

We proceded in a similar way that Task 3, with the same configuration parameters.

- Load the PNG file and configure the parameters established in the previous task.



- Print in MODELA



- Board finish.


C) Mounting components on the board

This time it was much easier , having the experience of task 3 experience. Observe the orientation of the components : Led, Microprocessor and button .

- Main Board


- Components


- Final Board