LCD1602实现四路温度控制系统，用三个按键分别对四个温度的上、下限的设定，假如温度大于预设d温度的话则继电器动作！有原理图和相应资料-LCD1602 realize four ways of temperature control system with three buttons, respectively, in four temperature limit set, if the temperature, temperatur

自己做的板的代码在lcd12864上看到温湿度，水位，继电器状态，可菜单选择。(Own board code, see the temperature, humidity, water level, relay status, menu selection on lcd12864.)