The picture shows the schematic of the controller board built for the Tiny Wanderer. The secondary picture shows the layout of the single-sided PCB board made using the toner transfer method.
Attached are all the KiCAD files needed to build or modify the PCB boards (both controller and sensor boards). A PDF of the copper side and the front silk-screen masks are also included.
The DPRG has a very detailed video of a presentation that actually does a demo of making a PCB using the toner transfer method at http://www.dprg.org/tutorials/2011-02a/index.html
. The nice thing about this particular tutorial is that it discusses the problems that you are likely to run into. It is however, somewhat long.note:
The resistor location in the sensor board should be jumpered, since the main board already has a current limiting resistor.