I am a retired electro/mechanical engineer and research physicist. I have experience and am comfortable in the following subjects: electrical and electronic circuit design, designing and building electrical control panels, PC board design and production, Arduino applications, ladder logic programming, electrical energy generation (diesel, hydro, wind, solar, nuclear), lighting system design and installation, HVAC system design, and installation, marine electrical systems, piping and pumping systems, hazardous area electrical installation, drilling and mining operations, manufacturing procedures, mechanical systems design, maintenance and repair and others. I am a very competent writer. I write operation manuals, maintenance and repair manuals, and papers on engineering and scientific subjects. I write clear and easy to understand papers. I held journeyman electrical licenses in California, Alaska and Australia and an unlimited welding license from California. I am computer literate.