Download pdf - Wi-Fi Module ESP8266_12 Tutorial (Data Logger) - Future ... · PDF fileWi-Fi Module ESP8266_12 Tutorial (Data Logger) ESP8266-12 (ESP-12) is the enhanced version of ESP8266 WIFI module

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Wi-Fi Module ESP8266_12 Tutorial (Data Logger)

ESP8266-12 (ESP-12) is the enhanced version of ESP8266 WIFI module. The ESP8266-12 has an integrated 80 MHz microcontroller with a full WiFi capability (both as client and access point) and TCP/IP stack with DNS support as well. Now you can add Internet and powerful WIFI networking capability to your project with

Compared to ESP8266, The The ESP8266-12 onboard antenna impedance matching was modified to improve output signal strength and quality. Both stability and RF interference resistance has been improved to reduce the data losses during transmit and receive. It has the additional six pins with IO and SPI ports which allow more freedom to the developer.

ESP8266 Wi-Fi Analog data Logger Example

http://store.fut-electronics.com/products/wifi-esp8266-12-serial-ttl-module-esp-12




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Application of ESP8266_12 with Arduino Mega

Pin connection:

Arduino Mega ESP8266

3.3v VCC & EN & GPIO2 & GPIO0

GND GND & GPIO15TX2 PIN(16) RX

RX2 PIN(17) TX

- Open https://thingspeak.com/ and following the figures.

https://thingspeak.com/

https://thingspeak.com/

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Open Arduino code and change it as below

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Open the Serial Monitor:

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Arduino code:-

#define SSID "Your Wireless Name"

#define PASS "Your Password"

#define IP "api.thingspeak.com" // thingspeak.com

String url = "/update?key=Write API Key&field1="; //thingspeak channel taking readings

void setup() {

Serial2.begin(115200); // for arduino mega

Serial.begin(115200); //for serial port

//delay(4000);

while(Serial2.available()>0)

//Serial.read();

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delay(1000);

Serial.println("AT"); //Testing module

Serial2.println("AT");

if(Serial2.find("OK"))

{

Serial.println("Module is ready");

}

else

{

Serial.println("Module have no response.");

}

Serial2.println("AT+CWMODE=1"); // SETTING mode

Serial.println("AT+CWMODE=1");

delay(200);


{

Serial.println("Mode set");

}

else

{


}

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while(Serial2.find("OK") == false)

{

String wifi="AT+CWJAP=\"";

wifi+=SSID;

wifi+="\",\"";

wifi+=PASS;

wifi+="\"";

Serial.println(wifi);

Serial2.println(wifi);

delay(5000);

}

Serial.println("Connected");

Serial2.println("AT+CIPMUX=1"); // changing mode

Serial.println("AT+CIPMUX=1");

delay(200);


{

Serial.println("Mode set");

}

else

{


}

Serial.print("Connecting to ");

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Serial.println(IP);


{

String page = "AT+CIPSTART=4,\"TCP\",\"";

page += IP;

page += "\",80";

Serial2.println(page);

Serial.println(page);

delay(5000);

}

Serial.println("Linked");

}

void loop() {

int x=analogRead(A0);

String cmd = "GET ";

cmd += url;

cmd += x;

cmd += " HTTP/1.0\r\n\r\n";

Serial.print("AT+CIPSEND=4,");//determine how many bytes

Serial.println(cmd.length());

Serial2.print("AT+CIPSEND=4,");

Serial2.println(cmd.length());

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{

Serial.println("OK");

}else{

Serial.println("ERROR");

}

Serial2.print(cmd);//send request

delay(250);

// delay bta3 el channel 300

while (Serial2.available())

{

char c = Serial2.read();

Serial.write(c);

if(c=='\r') Serial.print('\n');

}

Serial.println("\r\n.............................");

delay(5000);


{

String page = "AT+CIPSTART=4,\"TCP\",\"";

page += IP;

page += "\",80";

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Serial2.println(page);

Serial.println(page);

delay(7000);

}

Serial.println("Linked");

}