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                            ## 工作3：連線

因為PM5003S（G5S）和PM5003 完全一樣，所以這個教程的接法跟教程1[用開源硬件 DIY氣體檢測儀系列教程 1 -顆粒物][7]基本一致，只不過多接了一個SI7021。
SI7021 | NODEMCU+OLED集成開發板 | 
----|------|
ＶＣＣ | ３.３Ｖ　（千萬別接到5V上面）
ＧＮＤ |  ＧＮＤ
ＳＤＡ | Ｄ５  
ＳＣＬ|	Ｄ６
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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