Electronic Design
For designing electronics, I used the "Eagle" software. After downloading the propper library, I choose my components regarding of the schematics of the hello44 board and adding some I wanted to add.
I connected them together by drawing a little wire on each components, and rename them. Eagle will then automatically (virtually) connect the wire who had the same name. So I can switch from the schematic view to the board view wich allow me to look what it will look like in real.
I placed the component and the connections the way I wanted, selected the layer I wanted to keep (only the 'top' one) and saved as an image. I opened this images in photoshop and add a 20px border for the cutting of the board and also my name (I could have add anything else just by drawing it in white).
The .png files are then converted to .rml (5 offsets) via the fabmodules and send to the machine for begin the milling.
Then it's needed to pick the reel component and weld it to the board. As you can see I break a little part of cupper because it was really thin, so I had to fix that by adding some wires.
The board is ready to be programmed.
Here are the schematic and board files.