Hello, many thanks for your insight.
I have a project with ESP8266
I am trying to log some sensor data from my Arduino + ultrasonic Sensor to google spreadsheet.
I'm using Arduino uno+ LOLIN(WEMOS) D1 R2 Mini Board as my ESP8266 wifi module.
I am using my mobile hotspot to connect to the internet but it keeps telling me "connection failed" meaning it doesn't connect to script.google.com.
It connects to the internet and gives me an IP but doesn't connect to script.google.com
Can anyone in the house look at my Arduino code and see if you can help me, please.
This is my arduino code
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <WiFiClient.h>
#include <Servo.h> //servo library
#define trigPin A5
#define echoPin A4
Servo myservo;
const char* ssid = "<my ssid>";
const char* password = "<my password>";
const char* host = "script.google.com";
const int httpsPort = 443;
// Use WiFiClientSecure class to create TLS connection
WiFiClientSecure client;
// SHA1 fingerprint of the certificate, don't care with your GAS service
const char* fingerprint = "46 B2 C3 44 9C 59 09 8B 01 B6 F8 BD 4C FB 00 74 91 2F EF F6";
String GAS_ID = "AKfycbwBPnixqq0_-wXyuMImLLKN0QvtnR3peWpFbifYFkWue_BagmrC"; // Replace by your GAS service id !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
int trigPin = A5;
int echoPin = A4;
float pingTime;
float targetDistance;
float speedOfSound = 343;
void setup()
{
Serial.begin(115200);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
//connecting to internet
Serial.print("connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void loop()
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2000);
digitalWrite(trigPin, HIGH);
delayMicroseconds(15);
digitalWrite(trigPin, LOW);
delayMicroseconds(10); //Delay in high state
pingTime = pulseIn(echoPin, HIGH);
pingTime = pingTime / 1000000;
targetDistance = speedOfSound * pingTime;
targetDistance = targetDistance / 2;
targetDistance = targetDistance * 100;
Serial.print("DATA,TIME,");
Serial.println(targetDistance );
delay(1000);
sendData(targetDistance);
delay(2000);
}
// Function for Send data into Google Spreadsheet
void sendData(float targetDistance)
{
Serial.print("connecting to ");
Serial.println(host);
if (!client.connect(host, httpsPort)) {
Serial.println("connection failed");
return;
}
if (client.verify(fingerprint, host)) {
Serial.println("certificate matches");
} else {
Serial.println("certificate doesn't match");
}
String string_distance = String(targetDistance, DEC);
String url = "/macros/s/" + GAS_ID + "/exec?distance=" + string_distance;
Serial.print("requesting URL: ");
Serial.println(url);
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"User-Agent: BuildFailureDetectorESP8266\r\n" +
"Connection: close\r\n\r\n");
Serial.println("request sent");
while (client.connected()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
Serial.println("headers received");
break;
}
}
String line = client.readStringUntil('\n');
if (line.startsWith("{\"state\":\"success\"")) {
Serial.println("esp8266/Arduino CI successfull!");
} else {
Serial.println("esp8266/Arduino CI has failed");
}
Serial.println("reply was:");
Serial.println("==========");
Serial.println(line);
Serial.println("==========");
Serial.println("closing connection");
}
Moderator edit:
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tags added.
