Comments on: ESP32 HTTP GET with Arduino IDE (OpenWeatherMap.org and ThingSpeak)

By: Sara Santos

Sara Santos — Fri, 29 Mar 2024 16:32:46 +0000

In reply to Turlu. Serial.println(myObject["weather"][0]["description"]);

By: Turlu

Turlu — Fri, 29 Mar 2024 09:15:56 +0000

Hi everybody,
here is my json object :
JSON object = {“coord”:{“lon”:-21.4533,”lat”:40.88},”weather”:[{“id”:804,”main”:”Clouds”,”description”:”couvert”,”icon”:”04d”}],”base”:”stations”,”main”:{“temp”:10.9,”feels_like”:10.42,”temp_min”:10.9,”temp_max”:10.9,”pressure”:991,”humidity”:91,”sea_level”:991,”grnd_level”:966},”visibility”:10000,”wind”:{“speed”:5.56,”deg”:198,”gust”:11.67},”clouds”:{“all”:100},”dt”:1711703046,”sys”:{“type”:1,”id”:6569,”country”:”PT”,”sunrise”:171331123,”sunset”:1711736885},”timezone”:7200,”id”:3066953,”name”:”Vigo”,”cod”:200}
Which command to read the descrption valure (Couvert)?
Thanks all.
Bye

By: subhaniminhas

subhaniminhas — Sat, 11 Nov 2023 10:44:18 +0000

In reply to Sara Santos. // Convert JSONVar to String String tempStr = JSON.stringify(myObject["main"]["temp"]);

    // Convert String to float
    float temperature = tempStr.toFloat();

  //float tempC = myObject["main"]["temp"].as<float>();
  Serial.print("Temperature: ");
  //Serial.println(tempC-273.0);
  Serial.println(temperature-276.15);

By: subhaniminhas

subhaniminhas — Sat, 11 Nov 2023 10:42:02 +0000

In reply to GIANNI. // Convert JSONVar to String String tempStr = JSON.stringify(myObject["main"]["temp"]);

    // Convert String to float
    float temperature = tempStr.toFloat();

  //float tempC = myObject["main"]["temp"].as<float>();
  Serial.print("Temperature: ");
  //Serial.println(tempC-273.0);
  Serial.println(temperature-276.15);

By: michelangelo

michelangelo — Thu, 14 Sep 2023 18:27:07 +0000

ciao!
I’ve been trying to connect the ESP32 to the weather vane unsuccessfully, and I’d like to know if you can provide some guidance on the connection, please

By: Robert N

Robert N — Sun, 25 Dec 2022 18:50:52 +0000

In reply to Yriy. Thanks for this - I am still puzzled though as to what the [0] does in terms of decoding. Is it referring to the first variable in an array? I have played around to try to acces things like sunrise and feels_like but haven't been able to figure how how to write it.

By: NTKKS

NTKKS — Sun, 18 Dec 2022 20:53:27 +0000

For those getting a httpGETRequest prolem and using VSCODE, you have to put that function before the loop(). It is a function order thing handled differrently by some IDEs.

By: Michael

Michael — Fri, 14 Oct 2022 13:25:02 +0000

In reply to Indika. Problem is when using this server path, it returns this error: "https" was not declared in this scope. I can't get this server path to work!!

By: Me-Chiel

Me-Chiel — Thu, 29 Sep 2022 11:24:31 +0000

In reply to 37_633k0.

hey El Geeko,

I was just looking for this yesterday.
not for the description, but for the icon.
Serial.println(WebIcon.substring(1, 4));
for the description you also need to get the length. there’s a command for that as well. Google will help you there:)

By: Sara Santos

Sara Santos — Thu, 29 Sep 2022 10:20:33 +0000

In reply to 37_633k0.

Hi.
You can use the substring() method: https://www.arduino.cc/reference/en/language/variables/data-types/string/functions/substring/
Regards,
Sara