I built the MJoy16 controller quite some time ago and finally got around to making the key matrix board that allows easy input hookup. This board is double sided and a lot more tedious to drill and populate so I had been putting it off. I once again used the toner transfer method with good results.
It took about 10 minutes to get the two papers aligned properly and then it was pretty short work to etch. A lot of soldering and drilling later and here it is:
