Connecting Two Sets
As it now stands, the set can be used by itself. And it will provide hours of fun for anyone interested in learning code. But let’s assume you’ve got a code buddy and that the two of you have made identical sets, each with its own battery. What now?
First, you will have to add two more terminals to each set (see interconnection diagram). Use screws. Add a wire from the + terminal of the battery to one screw and mark the screw +. Add another wire from the open end of the code key to the other screw and mark that screw –. Upon connecting the two sets, run one wire from + screw to + screw and the other wire from – screw to – screw. Now when you tap the code key, your set will work and so will your buddy’s. And vice versa. In that way, the sender can hear what he’s sending.
Interconnection Diagram
