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Fab Academy 2014,
Masato Takemura

Weekly Assingments


Class13: Networking Communication
April 23th,2014

Memo

I lerned about Networking and Communication.

Assignment

This week's assignment is making any devices that can communicate each other. I made boads using RS232.

1.Design circuit

First, I designed a circuit with EAGLE CAD.

fig.2,fig.3

I exported bellow two BMP for milling.

left:fig4.cutout right:fig5.pattern

I exported bellow two BMP for milling.

left:fig6.cutout right:fig7.pattern

2.assembly

After I designed a circuit, I assembled.


fig.8

3.Programming

I used codes prepared by FabAcademy page "hello.bus.45_n2.c". I modified the "node number" in their codes and wrote into the chip by using AVRISP.


fig.9

Source file

4.test

It's time to test. I connected FTDI cable for supplying power. and I connected three boads I made. Bridge board ,node1 and node2.When I typed "0" by using Arduino IDE Serial Monitor, I got a text "node 0" on serial monitor. In additionally, the boad numbered "0" blinked twice immediately.


fig.10



[Reference]
  1. DANA's archive

  2. http://www.fabacademy.org/archives/2013/students/greenlaw.dana/networking.html