I will make this point many times in my essays, I do not relay on microprocessors. Even in times of peace and industrialization, I have had processors fail on me too many times. I would never rely on them in a survivalist situation (inverters etc). All my circuits are hard wire by relay controlled (solenoid) or industrial diodes. This hard wired circuit can be repaired and replaced. LED lighting, that is a weak diode (Semiconductor; one direction current), is manufactured by use of crystals and alloys, elements yet prone to heat stress.