How to upload data to web using EPS8266 nodemcu with source code
#nodemcu #ESP8266 #thingspeak
You can upload your data such like temperature , humidity, Lux level to internet. then you can access that data anywhere if you have internet connection. https://thingspeak.com/ will handle your sensor node data and crate nice live graph.you can customize many of thing in the graph.
#include "ESP8266WiFi.h"
char* ssid = "asd@123ok";
char* password = "mypassword";
char server[] = "api.thingspeak.com";
int valueToUpload = 0;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.printf("WiFi connecting to %s", ssid);
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(100);
}
Serial.println("Con ok");
}
void loop() {
// put your main code here, to run repeatedly:
valueToUpload = random(10, 99);
Serial.printf("Now uploading %d\n", valueToUpload);
WiFiClient client;
Serial.printf("Now connecting to %s\n", server);
if (client.connect(server, 80)) {
client.print("GET /update?api_key=PYX8K07F9B1D0QOQ&field1=");
client.print(valueToUpload);
client.println(" HTTP/1.1");
client.print("Host: ");
client.print(server);
client.println("Connection: close");
client.println();
}
else {
Serial.println("Connection fail");
}
while (client.connected()) {
if (client.available()) {
char cc = client.read();
Serial.print(cc);
}
}
client.stop();
delay(5000);
}