A combine harvester having a frame and a crop harvesting header supported by the frame to gather crop material. In accordance with the method, the supply of the workpieces by the autoloader is performed in accordance with a supply control routine. The half-cell electrode chamber comprises a first redox-active mediator and a second redox-active mediator. The actuator elements having substrate is made to face the flexible printed circuit board, and heated under pressure to thereby electrically bond the signal electrodes to the corresponding bumps.