.. _2连接图:

2.连接图
========

========= ============ =======
uno控制板 水流量传感器 LCD1602
========= ============ =======
5V                     VCC
IOREF     VCC          
GND       GND          GND
A4 (SDA)               SDA
A5 (SCL)               SCL
D2        S(信号线)    
========= ============ =======

|image1|

.. |image1| image:: media/e8708b4e56a49299b661d8e2fb3df070.png