Design and fabricating the board

-click here to download files(bridge.sch, bridge.brd)

-click here to download files(node.sch, node.brd)

This time I had a problem to mill the board. The end mill sliped while milling, so I move the z axis -0.05 repeatedly up to the endmill milling the board. However the mill looks creepy. and not able to stuff the component.


So I had to mill again. Second mill looks durnken. It looks not able to mill straight.

I found out the reason is that the board is not stick well enough. That is why endmill makes drunken road, the board moves a bit. So I took off the board and stick it tight. Milling was fine.

asynchronous serial bus

- I need 3 C file because each board have to have differnet node id. So after I downloaded Neil's file, I copyed and changed the id number.

-I put c and make file into each node folder and made diffrent hex file for each board.


-If programming is failed, fix the make file, and try agian.
-to fix the make file, I did
1. changes some spaces(red line) to 1 tap. mostly it works.
2.or add fuses command.(blue circle)


- Program done!
- Click here to download the files(node0, node1, node2)

Pyserial

-when I tried to check on python, it comes error of the prot speed.
- Click here to download the files(term.py)

I2C arduino

-I also tried I2C with arduino. Ultrasonic board is sending date to lcd board. click here for reference.
- Click here to download the files(distance_master.ino, LCD_slave.ino)