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Fab Academy 2014,
Masato Takemura

Weekly Assingments


Class6: Electronics Design
March 5th,2014

Memo

This week I'v learned how to design electronics circuit!

Assignment


This week's assignment is to design electronics curcuit board based on echo hello world board.

Electronics Design

I designed curcuit board by using FabModule. It can design with python code.


fig.1 I designed circuit board using cad_ui produced by FabAcademy

I used cad_ui tool on OSX. It's first time to develop circuit board with cad_ui. It's sample source provided by FABACADEMY. It seems useful.


fig.2 convert png to gcode

After designing by cad_ui, I export png file. Then I convert to gcode. I use CNC milling machine not MODELA.


fig.3 engrave and cutout curcuit board

Milling description is below. Tool:(Engraving) Endmill 0.4mm,(Cut out) Endmill 0.9mm. It takes about 30min including engraving and cutting.


fig.4 design failed... I use different oscillator

I missed designing. I replaced oscillator that in stock from original design.


fig.5 I finished making hello echo board added 1 LED and 1 switch.

I fix another miss by instantly.


[Reference]
  1. ATtiny44A datasheet

    2. http://academy.cba.mit.edu/classes/embedded_programming/doc8183.pdf