Using HT66FU50 as main control chip, along with sensors and associated circuitry, a family multifunction aquarium is designed. It’s a fully automatic aquarium, which can monitor the water’s temperature and oxygen level, can automatic intelligent control feeding, music playing, and oxygen increasing. It also incorporates functions of status displaying, parameter setting, auto-power-off when fault,
... [Show full abstract] etc. This design is low cost, easy to use, and has worthy of popularity.