float data | Arduino | Forum

Hello everyone,

I would like to modify this exemple to send float values from a weight sensor but i cant figure how to do so.

i read about float to char convertion and others topic on the forum but it is difficult for a newbe like me to understand it.

I would really appreciate if someone could help and show me how to do that.

Thanks

#include
const char* ssid = "XXXXXXXXXXXXX";
const char* password = "XXXXXXXXXXXXXXXXXX";
const char* host = "api.thingspeak.com";

void setup() {
Serial.begin(115200);
delay(10);
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}

void loop() {
WiFiClient client;
const int httpPort = 80;

if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
return;
}
else
{
Serial.println("connected !");
}

char buffer[200];
int adcValue = analogRead(A0); // here the value will be a float between 0.00 and 200.00
Serial.println(adcValue);
sprintf(buffer, "GET /update?key=XXXXXXXXXXXXXXXXXXXX&field1=%d
", adcValue);
client.print(buffer);

while (client.available()) {
String line = client.readStringUntil('
');
Serial.print(line);
}

client.stop();
Serial.println("closing connection");
delay(60000);
}