hi guys,
first of all, i love your tutorials and I’m now using esp32 and esp8266 thanks to you! thanks for the great work:)
I’m trying to do the tutorial (chapter 3.3) on the ebook with a MLX90614 temperature sensor (I don’t have any BME280 around).
Everything works perfectly for one of the two values that I am trying to send (one for object temperature and one for ambient temperature) the second value is not consistent and returns numbers out of range (like: 1037.54993). I have a test sketch to test the sensor (without firebase) and it works good.
Am I missing something? can you help with that?
thanks a lot!
 
here is the code I am using:
question RNT – Pastebin.com

or - 

Start your code here

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <Firebase_ESP_Client.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_MLX90614.h>
#include <Wire.h>
#include <SPI.h>
…
// Define Firebase objects
FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;
// Variable to save USER UID
String uid;
// Variables to save database paths
String databasePath;
String ambientTempPath;
String objectTempPath;
//String presPath;
// MLX90614 sensor
Adafruit_MLX90614 mlx = Adafruit_MLX90614();
float ambientTemp;
float objectTemp;
// Timer variables (send new readings every three minutes)
unsigned long sendDataPrevMillis = 0;
unsigned long timerDelay = 10000; //180000
// Initialize WiFi
void initWiFi()
{
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print(“Connecting to WiFi ..”);
while (WiFi.status() != WL_CONNECTED)
{
Serial.print(‘.’);
delay(1000);
}
Serial.println(WiFi.localIP());
Serial.println();
}
// Write float values to the database
void sendFloat(String path, float value)
{
if (Firebase.RTDB.setFloat(&fbdo, path.c_str(), value))
{
Serial.print(“Writing value: “);
Serial.print(value);
Serial.print(” on the following path: “);
Serial.println(path);
Serial.println(“PASSED”);
Serial.println(“PATH: ” + fbdo.dataPath());
Serial.println(“TYPE: ” + fbdo.dataType());
}
else
{
Serial.println(“FAILED”);
Serial.println(“REASON: ” + fbdo.errorReason());
}
}
void setup()
{
Serial.begin(115200);
// Initialize sensor
mlx.begin();
initWiFi();
// Assign the api key (required)
config.api_key = API_KEY;
// Assign the user sign in credentials
auth.user.email = USER_EMAIL;
auth.user.password = USER_PASSWORD;
// Assign the RTDB URL (required)
config.database_url = DATABASE_URL;
Firebase.reconnectWiFi(true);
fbdo.setResponseSize(4096);
// Assign the callback function for the long running token generation task */
config.token_status_callback = tokenStatusCallback; //see addons/TokenHelper.h
// Assign the maximum retry of token generation
config.max_token_generation_retry = 5;
// Initialize the library with the Firebase authen and config
Firebase.begin(&config, &auth);
// Getting the user UID might take a few seconds
Serial.println(“Getting User UID”);
while ((auth.token.uid) == “”)
{
Serial.print(‘.’);
delay(1000);
}
// Print user UID
uid = auth.token.uid.c_str();
Serial.print(“User UID: “);
Serial.println(uid);
// Update database path
databasePath = “/UsersData/” + uid;
// Define database path for sensor readings
ambientTempPath = databasePath + “/sensor/ambientTemp”; // –> UsersData/<user_uid>/sensor/ambientTemp
objectTempPath = databasePath + “/sensor/objectTemp”; // –> UsersData/<user_uid>/sensor/objectTemp
}
void loop()
{
// Send new readings to database
if (Firebase.ready() && (millis() – sendDataPrevMillis > timerDelay || sendDataPrevMillis == 0))
{
sendDataPrevMillis = millis();
// Get latest sensor readings
objectTemp = mlx.readObjectTempC();
ambientTemp = mlx.readAmbientTempC();

// Send readings to database:
sendFloat(objectTempPath, objectTemp);
sendFloat(ambientTempPath, ambientTemp);

}
}