We were concerned with controlling the water levels in the two chambers of our prototype. We knew that we needed an electronic solution that would not subtract from the KWHours = KGs hydrogen total. Fortunately, Harry Gottshall, of Gottshall Instruments, stepped up to the plate. He constructed a Wiring Schematic designed to interface with the optical water level sensors in the evolve unit and help them convey their signals to the Solenoid Switches through an electronic Bread Board. Once approved, he constructed the Bread Board, which was a maze of micro wiring, resistors, transistors and relays. He demonstrated to me how it works: When the higher-level sensor detects water, it closes the valves of the Solenoid Switches, stopping the flow of water. After the water depletes, the water level lowers and goes under the lower level sensor, telling the Solenoids to open, and allowing water to flow into the chambers and refill them. The result is sheer wizardry.