A drum type washing machine in which wash water and laundry contained in a rotating tub are heated by steam supplied into the rotating tub, so as to rapidly increase the temperature of the wash water and laundry, thereby being capable of reducing the total wash time while reducing the amount of wash water to be used, and reducing the consumption of energy caused by heating of the wash water. At least one of a distance and an angle between two resonators may be measured. A watering system is connected to an existing water source, which delivers water to an inline plant food reservoir for introducing plant food into the water. The body is supported by at least two rotational structures, including at least one driven rotational structure coupled with an electronically-controlled power source. The boom and base member pivot with respect to the support member to a collapsed storage position. Photodiode pixels disposed in an array having a chosen geometry, each pixel having a dedicated amplifier, analog-to-digital convertor, and memory, provide parallel operation of the system.