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TEST_SERIAL_UNO/TEST_SERIAL_UNO.ino

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+ // Pins  
+ // Arduino pin 2 (RX) to ESP8266 TX  
+ // Arduino pin 3 to voltage divider then to ESP8266 RX  
+ // Connect GND from the Arduiono to GND on the ESP8266  
+ // Pull ESP8266 CH_PD HIGH  
+ #include <SoftwareSerial.h>  
+ SoftwareSerial ESPserial(3, 2); // RX | TX  
+ void setup()   
+ {  
+   Serial.begin(9600);   // communication with the host computer  
+   // Start the software serial for communication with the ESP8266  
+   ESPserial.begin(9600);   
+   Serial.println("");  
+   Serial.println("Remember to to set Both NL & CR in the serial monitor.");  
+   Serial.println("Ready");  
+   Serial.println("");    
+ }  
+ void loop()   
+ {  
+   // listen for communication from the ESP8266 and then write it to the serial monitor  
+   while ( ESPserial.available() )  { Serial.write( ESPserial.read() ); }  
+   // listen for user input and send it to the ESP8266  
+   while( Serial.available() )    { ESPserial.write( Serial.read() ); }  
+
+    String json = "/json.htm?type=command&param=udevice&idx=892&nvalue=0&svalue=0;0;0;0;510;0";
+    ESPserial.print(json);
+  delay(10000);
+ }