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7. Electronics design

Assignment

individual project:
redraw the echo hello-world board,
add (at least) a button and LED (with current-limiting resistor)
check the design rules, make it, and test it
extra credit: simulate its operation

Learning outcomes

Select and use software for circuit board design
Demonstrate workflows used in circuit board design

Have you?

Shown your process using words/images/screenshots
Explained problems and how you fixed them, including how you worked with design rules for milling (DRC in EagleCad and KiCad)
Included original design files (Eagle, KiCad, Inkscape, .cad - whatever)

What we did

FabAcademy2019-FabLab Kannai lab site

What I have done

This week I used Eagle to design my circuit board, milled with MDX-15 and FabModule.

First, I design a board on Eagle.

  • Created new board.

  • Added parts from library.

  • Connected parts by using “name” command

  • Setting the board configulation

    • Placed parts

    • Setting Grid

    • Setting line width

    • connected all compornents

  • Drew lines and checked design with hitting “drc” command

  • There was clealance error. So I widen the margin between lines.

  • cleared all error

  • export circuit as .png image

  • filtered only Top

  • export

  • also exported outline

  • filterd only document

  • Made a file for mill by using FabModules

  • Milled with MDX-15

  • Parts and milled board

  • Solderd parts

  • Making connector cable

  • conneceted and write term.py through FabISP

  • term.py is working! term.py

Parts

  • Resistance 10k ohm
  • Capacitor 1uF
  • Attiny 44
  • Resonator 20MHz
  • Pin header 2x3

  • Pin header 1X6

  • Switch

  • LED
  • Resistance 1k ohm
  • Resistance 10k ohm