Step 1: Scheme
Step 2: Bottom view of the board
Step 3: Now what?
Let me start with power supply. If you are using 9V battery you can make this kind of board with 78L05.
Step 4: Another idea
Step 5: The end result
For example like that.
Step 7: Conclusion
I've showed you the idea, how to create a flexible board which can also be attached to the protobard.
The SILs are used for wire-wrap tehnique, but I used them to get connection between the boards.
If you have questions or would like to order a PCBs, contact me on: bostjan(at)japina.eu