A driving apparatus that improves the precision of driving control for a driven member by reliably ensuring the desired motion of the tip member. Overlapping communication frequencies between data exchange protocols present a collision and interference problem when data transmissions are transmitted using similar timing and frequency characteristics during wireless transit. The mixture is placed into a mold; the surface of the polymer is dissolved to cause cohesion and form a polymer structure having water-soluble granules dispersed within, and water is introduced into the inner part of the polymer structure so that the polymer is solidified and water-soluble granules are washed out to obtain a porous polymer material. An electroconductive antileakage overlay covers these side surfaces via an electrically insulating overlay. At least one of the anode and the cathode includes a conductive electrode substrate and a catalyst layer formed thereon, and the catalyst layer includes a first catalyst layer including a first metal catalyst that grows from the polymer electrolyte membrane toward the electrode substrate and a second catalyst layer including a second metal catalyst covering the first catalyst layer. 25 to 1, and 25 to 1 to produce a rolled metal strip, expanding the rolled metal strip to produce an expanded metal grid; and heating the expanded metal grid at a temperature between about 125 C.