自制的家庭水箱水位报警器软件，使用了STC12C5201AD的芯片，主要用到了AD转换功能，当水位偏低的时候，报警器就输出声光报警，增加了故障报警功能，防止探测部分的电路损坏。-Homemade household water tank level alarm software, use chip of STC12C5201AD, the main use of the AD converter function when the water level is low, the alarm output sound and light alarm, fault alarm function, to prevent detection part of the circuit is damaged.