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]