Displaying on LCD

Other Hardware Displays
1

Hello, i am fairly new to arduino and i am trying to get the lcd display the same thing that is being displayed in the serial monitor.

Right now i have a code that is detecting audio frequency and it is being displayed in the serial monitor. Ex: "430Hz"

I have written a code but nothing is being displayed in my lcd screen, just the serial monitor. Is this possible to do?

Code:
#include <LiquidCrystal.h>
int Contrast=20;
LiquidCrystal lcd(12 , 11, 5, 4, 3, 2);

int MicPin = A0; // Pin that mic is connected too
int MicValue1 = 0; // store a mic reading
int MicValue2 = 0; // store a mic reading

void setup(){
analogWrite(6, Contrast);
lcd.begin(16, 2);
digitalWrite(9, HIGH);
delayMicroseconds(5000000);
pinMode(MicPin,INPUT);
Serial.begin(9600);
}

void loop(){
MicValue2 = analogRead(MicPin); // Read pini value
Serial.print(MicValue2);
Serial.println("Hz");
delay(2000);

char TestData;
if(Serial.available() )
{
lcd.clear();
TestData = Serial.read();
while(Serial.available() > 0){
lcd.write (MicValue2); // echo the incoming character to the LCD
}

2

Hi and welcome.

Please read the forum manual (click !).
It will teach you how to properly post code, and ask questions in an efficient way so people can also answer you in an efficient way.

I have to assume you connected the LCD correctly, that is as you described in your code.
After initialising your display, you're in setup.
There you are attempting to control the contrast of that LCD of yours (that is what the code says).
If you connected Arduino pin 6 to LCD pin 3 (contrast), then you are not doing this the right way, and controlling the contrast will be a big problem.
Just use a potentiometer between pin 3 of the LCD and GND, and DO NOT connect it to 5 volts.

Your LCD-library works exactly the same as the serial connection (so that is by design).
Why do you think you need to send your data in a different way to your LCD, as that is what you are trying to do now.

There's more remarks to make about your code (what's with the huge delays, and why do they need to be that exactly timed, for instance).
But i'll leave it at this for now.
Still please also read my signature below.