Hey, I am making a spark parking system with ESP8266 Nodemcu and I am facing a problem compiling the code.
#include <ESP8266WiFi.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <FirebaseArduino.h>
#define FIREBASE_HOST "smart-parking-7f5b6.firebaseio.com" // the project name address from firebase id
#define FIREBASE_AUTH "suAkUQ4wXRPW7nA0zJQVsx3H2LmeBDPGmfTMBHCT" // the secret key generated from firebase
#define WIFI_SSID "CircuitDigest" // input your home or public wifi name
#define WIFI_PASSWORD "circuitdigest101" //password for Wifi
String Available = ""; //availability string
String fireAvailable = "";
LiquidCrystal_I2C lcd(0x27, 16, 2); //i2c display address 27 and 16x2 lcd display
Servo myservo; //servo as gate
Servo myservos; //servo as gate
int Empty; //available space integer
int allSpace = 90;
int countYes = 0;
int carEnter = D0; // entry sensor
int carExited = D4; //exi sensor
int TRIG = D7; //ultrasonic trig pin
int ECHO = D8; // ultrasonic echo pin
int led = D3; // spot occupancy signal
int pos;
int pos1;
long duration, distance;
void setup() {
delay(1000);
Serial.begin (9600); // serial debugging
Wire.begin(D2, D1); // i2c start
myservo.attach(D6); // servo pin to D6
myservos.attach(D5); // servo pin to D5
pinMode(TRIG, OUTPUT); // trig pin as output
pinMode(ECHO, INPUT); // echo pin as input
pinMode(led, OUTPUT); // spot indication
pinMode(carExited, INPUT); // ir as input
pinMode(carEnter, INPUT); // ir as input
WiFi.begin(WIFI_SSID, WIFI_PASSWORD); //try to connect with wifi
Serial.print("Connecting to ");
Serial.print(WIFI_SSID); // display ssid
while (WiFi.status() != WL_CONNECTED) {
Serial.print("."); // if not connected print this
delay(500);
}
Serial.println();
Serial.print("Connected to ");
Serial.println(WIFI_SSID);
Serial.print("IP Address is : ");
Serial.println(WiFi.localIP()); //print local IP address
Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH); // begin firebase authentication
lcd.begin(); //begin lcd
lcd.home();
lcd.setCursor(0, 0); // 0th row and 0thh column
lcd.print("Smart Parking");
}
void loop() {
digitalWrite(TRIG, LOW); // make trig pin low
delayMicroseconds(2);
digitalWrite(TRIG, HIGH); // make trig pin high
delayMicroseconds(10);
digitalWrite(TRIG, LOW);
duration = pulseIn(ECHO, HIGH);
distance = (duration / 2) / 29.1; // take distance in cm
Serial.print("Centimeter: ");
Serial.println(distance);
int carEntry = digitalRead(carEnter); // read ir input
if (carEntry == HIGH) { // if high then count and send data
countYes++; //increment count
Serial.print("Car Entered = " ); Serial.println(countYes );
lcd.setCursor(0, 1);
lcd.print("Car Entered");
for (pos = 140; pos >= 45; pos -= 1) { // change servo position
myservos.write(pos);
delay(5);
}
delay(2000);
for (pos = 45; pos <= 140; pos += 1) { // change servo position
// in steps of 1 degree
myservos.write(pos);
delay(5);
}
Firebase.pushString("/Parking Status/", fireAvailable ); // send string to firebase
lcd.clear();
}
int carExit = digitalRead(carExited); //read exit ir sensor
if (carExit == HIGH) { //if high then count and send
countYes--; //decrement count
Serial.print("Car Exited = " ); Serial.println(countYes);
lcd.setCursor(0, 1);
lcd.print("Car Exited");
for (pos1 = 140; pos1 >= 45; pos1 -= 1) { // change servo position
myservo.write(pos1);
delay(5);
}
delay(2000);
for (pos1 = 45; pos1 <= 140; pos1 += 1) { // change servo position
// in steps of 1 degree
myservo.write(pos1);
delay(5);
}
Firebase.pushString("/Parking Status/", fireAvailable ); // send string to firebase
lcd.clear();
}
if (distance < 6) { //if distance is less than 6cm then on led
Serial.println("Occupied ");
digitalWrite(led, HIGH);
}
if (distance > 6) { //if distance is greater than 6cm then off led
Serial.println("Available ");
digitalWrite(led, LOW);
}
Empty = allSpace - countYes; //calculate available data
Available = String("Available= ") + String(Empty) + String("/") + String(allSpace); // convert the int to string
fireAvailable = String("Available=") + String(Empty) + String("/") + String(allSpace);
lcd.setCursor(0, 0);
lcd.print(Available); //print available data to lcd
}
This is the error message:
In file included from C:\Users\Amogh\Documents\Arduino\libraries\firebase-arduino-master\src/FirebaseArduino.h:22,
Multiple libraries were found for "Servo.h"
from D:\HDD\Files\PROJECT\3 year\IOT\Files\sketch_nov13a\sketch_nov13a.ino:7:
Used: C:\Users\Amogh\Documents\ArduinoData\packages\esp8266\hardware\esp8266\3.0.2\libraries\Servo
C:\Users\Amogh\Documents\Arduino\libraries\firebase-arduino-master\src/Firebase.h:26:10: fatal error: ArduinoJson.h: No such file or directory
26 | #include <ArduinoJson.h>
| ^~~~~~~~~~~~~~~
compilation terminated.
Not used: C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.51.0_x86__mdqgnx93n4wtt\libraries\Servo
exit status 1
Error compiling for board Generic ESP8266 Module.
