FreqMeasure LiquidCrystal Library Coding Error

Hi, I was doing a project on a speed sensor and looked for a code. I found one downloaded the libraries it specified but an error came up. Code:

#include "FreqMeasure/FreqMeasure.h"
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  Serial.begin(57600);
  lcd.begin(16, 2);
  lcd.print("Freq:");
  lcd.setCursor(10,0);
  lcd.print("Speed:");
  FreqMeasure.begin();
}

double sum=0;
int count=0;

void loop() {
  if (FreqMeasure.available()) {
    // average 30 readings together
    sum = sum + FreqMeasure.read();
    count = count + 1;
    if (count > 30) {
      float frequency = FreqMeasure.countToFrequency(sum / count);
      float spd = frequency / 19.49; //conversion from frequency to kilometers per hour (sorry, imperial guys :)
      //to improve speed, we update only the bottom row of the LCD
      lcd.setCursor(0, 1);
      lcd.print("                ");
      lcd.setCursor(0, 1);
      lcd.print(frequency);
      lcd.print("Hz");
      //lcd.print("       ");
      lcd.setCursor(8,1);
      lcd.print(spd);
      lcd.print("km/h");
      sum = 0;
      count = 0;
    }
  }
}/code]
 

The error:

Arduino: 1.8.3 (Mac OS X), Board: "Arduino/Genuino Uno"

/var/folders/7q/2mrctx594tz5s16j969ffptr0000gn/T/arduino_modified_sketch_241204/sketch_jul02a.ino:1:37: fatal error: FreqMeasure/FreqMeasure.h: No such file or directory
 #include "FreqMeasure/FreqMeasure.h"
                                     ^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Can someone help me?

Can someone help?

Where did you put the library when you installed it? The library should be in the libraries folder in your sketchbook folder. And the #include line should be. #include <FreqMeasure.h>

but an error came up

Which you forgot to tell us about.

Can someone help?

Sure thing. What do you need help with?

this is the error:

Arduino: 1.8.3 (Mac OS X), Board: "Arduino/Genuino Uno"

Downloads/FreqMeasure-1.2.0/FreqMeasure/FreqMeasure.ino:2:37: fatal error: FreqMeasure/FreqMeasure.h: No such file or directory
 #include <FreqMeasure/FreqMeasure.h>
                                     ^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
/code]

When I downloaded it I clicked ADD .ZIP Library and it didn't work
 #include <FreqMeasure.h>

I did that but, nothing changed there is still the same error. Maybe it is the library these are the libraries:

LiquidCrystal: https://playground.arduino.cc/Main/LiquidCrystal

FreqMeasure: https://github.com/3zuli/HB100_test/tree/master/HB100_LCD_Output/FreqMeasure

this is the error that comes up:

Arduino: 1.8.3 (Mac OS X), Board: "Arduino/Genuino Uno"

Arduino/libraries/LiquidCrystal/LiquidCrystal.cpp:6:22: fatal error: WProgram.h: No such file or directory
 #include "WProgram.h"

                      ^
compilation terminated.
Multiple libraries were found for "FreqMeasure.h"
 Used: /Users//Documents/Arduino/libraries/FreqMeasure-master
 Not used: /Users/Documents/Arduino/libraries/FreqMeasure-1.2.0
Multiple libraries were found for "LiquidCrystal.h"
 Used: /Users//Documents/Arduino/libraries/LiquidCrystal
 Not used: /Users//Documents/Arduino/libraries/NewliquidCrystal
 Not used: /Users//Downloads/Arduino.app/Contents/Java/libraries/LiquidCrystal
exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
/code]
Arduino/libraries/LiquidCrystal/LiquidCrystal.cpp:

The proper LiquidCrystal library ships with the IDE. Delete this ancient version.