Background

The following pages describe some background information that may be useful for people that experience problems or want to understand how to built something yourself.

The following pages exist:

• Unreliable feeback of switch positions. Several feedback buses made design decisions that made them problematic for sharing switch positions with PC programs that control your (switch) layout.

• Costs of PCB manufacturing. Who could have imagined 10 years ago that it has become cheaper to let your PCBs assemble in China, instead of soldering the components yourself.