高精度温度控制器自制

　　高精度温度控制器温度测量范围0~99.9摄氏度，设置上限报警温度、下限报警温度，当超出上下限时会报警，电源电压VCC为5V，DS18B20也可以根据需要用屏蔽电缆引出来。K1为进入/退出设置键;K2为增加键;K3为减少键，值得注意的时，要在K1K2K3并联一个103到104PF的电容，这是因为什么我也就不多说了哈，你可以去做做，先不加电容，然后再加上，自己做的太烂，没法贴出，在这里转jiangx，net(小江)的图。

　　

 

　　

程序：

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