For this week I used Neil's board
Milling
hello.bus.45.bridge traces
interior
and
hello.bus.45.node
traces
interior
Soldering
Bridge
Node
Programing
I'm still don't using Python and I'm using arduino environment instead to program and FabISP to burn the code to the microcontroller.
I used Or Shuval Code to program the boards (1 Brigde and 2 Nodes).
The code can be download here:
Bridge ,
Node.
To change node number please change it at this line -
if (incomingByte == 1) //check if the character is 1 - here you can set what is the number of the node.
Using it
I used IDE cable (it used for older Hard Disk)to connect all the devices and opened arduino serial port to send the data.
( You need to chenge the port from the com uesd to program to the com that the FTDI cable are connected to).