deskthority

What are my next step's from here? If my understanding is correct, the last step would be to load a hex version of this unto the teensy using the loader. But I'm quite unsure as to how to transform this into the hex file.

You need to compile the code. If you look at the start of the first part of ...

No no, you'd have to just remove them, if you bridge them nothing will work (EDIT:) you might destroy something, as Ray rightly stated.

Noted, thanks both of you.

Looks good to me except for the function select_row() where the rows seem to be in the wrong order.
the matrix.c looks like it is ...

In your matrix.c file, you're using the same pins for rows and columns that Matteo used in his example. Is that on purpose? Did you wire your board to the Teensy in the same way?

For example, you have only four rows on you keyboard, and you're using a five row matrix.

The number of rows and ...

I'm converting an Acorn Electron keyboard matrix to USB with the Teensy as the converter. I've wired up the board to the Teensy (in a temporary way) and altered the firmware like your guide suggests, compiled and put it on the Teensy.

This is the diagram http://i.imgur.com/e2ZOi15.png for the ...