This setup is used to bypass the tacho for manual input of the codes required for startup and stopping the rotor. The rotary switch outputs a code, via a micro, to the LEDs and to the guide wheels micro. For convenience the codes are binary. This enables simulated startup with the rotor stationary. It will probably be used initially for running tests. This board can be left in place, the rotary switch disconnected, and the tacho output attached for visual proof of the codes going to the guide wheel coordination micro.