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The pin assignment can be adapted according to the ESP. However, the pin for the soil moisture sensor must be able to read an analogue signal. The pins for HC-SR04, DHT22 and the relay must be digitally controllable.

If everything has been wired exactly as shown in the wiring diagram, only the following changes need to be made in ESP.ino:

• Enter the WiFi-SSID and password

// WLAN
const char* ssid = "yourSSID";
const char* pw = "yourPW";

• Enter the User-Name and the password

String email = "[email protected]";
String pw_API = "yourPassword";

• Enter a unique espID

String espID = "yourEspId";

• Enter a mesuring intervall

#define IntervallTime 5

• the timezone, if you don't live at the UTC+2 _timezone

const long utcOffsetInSeconds_winter = 3600; // Winterzeit in sek zur UTC Zeit
const long utcOffsetInSeconds_summer = 7200; // Winterzeit in sek zur UTC Zei

• Indication of the minimum and maximum tank level. It is important to remember that the sensor measures the distance to the water surface. The first parameter is given in cm, the second is given as the fill level in percent.

//weitere Parameter
#define maxTankhoehe 30 //Angabe in cm bei denen der Sensor den Tank als leer erkennt
#define minTanklevel 10 //Füllgrad in % b dem die Pumpe nicht mehr gießt

If you use your own Backend you have to cange the ServerPath and the Endpoint Names:

String baseUrl = "yourServerPath"; // Pfad zum Backend
String login_table = "user/login"; // Stelle an der sich der ESP bei der API einloggen muss
String tablePlant = "plant"; // Stelle an der sich der ESP die Pflanze holen kann
String tableDB = "data"; // Stelle an der ESP die Pflanzen Datensätze posten soll

If you have not wired the sensors and the relay as shown in the plan, you must adjust the pin assignment at the Module.h.

// PINs
#define ultraschalltrigger 34 // Pin an HC-SR04 Trig
#define ultraschallecho 35    // Pin an HC-SR04 Echo
#define BodenfeuchtigkeitPIN 33
#define PumpePIN 26
#define dhtPIN 23
#define dhtType DHT22
DHT dht(dhtPIN, dhtType);

Once you have made the specified changes, you can load the ESP.ino and Module.h onto your ESP. The debugging information is displayed via the serial monitor. If you have not wired the sensors and the relay as shown in the plan, you must adjust the pin assignment.

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