20x4 i2c bus with a analog mux displays issue

Other Hardware Displays
1

hello arduino community i need some help with some basic concepts of c coding !
i was trying to print 3 potentiometer values on lcd 20x4 display and serial display too !

or after printing to serial i want to show values on the lcd.
some of the code is taken from Nick Lamprianidis for credits..

#include "MUX74HC4067.h"
MUX74HC4067 mux(7, 8, 9, 10, 11);
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C  lcd(0x3F,2,1,0,4,5,6,7);

void setup()
{
 Serial.begin(9600); 
   lcd.begin(20, 4);
   
 lcd.setBacklightPin(3,POSITIVE);
 lcd.setBacklight(HIGH);
 mux.signalPin(A0, INPUT, ANALOG);
}

void loop()
{
 int data;
 for (byte i = 0; i < 3; ++i)
 {
   data = mux.read(i);
   Serial.print("Sen At Ch ");
   Serial.print(i);
   Serial.print(" Is ");
   Serial.print((double)(data) * 100 / 1023);
   Serial.println("%");
   delay(50);
 }

 Serial.println();

 
 delay(1500);
}
2

Flikz:
hello arduino community i need some help with some basic concepts of c coding !
i was trying to print 3 potentiometer values on lcd 20x4 display and serial display too !

or after printing to serial i want to show values on the lcd.
some of the code is taken from Nick Lamprianidis for credits..

Which Ardunio Board are you using?
Which version Arduino IDE are you using?
Which operating system are you using?
Linux, MacOSX, MS Windows, other

What is the make and model of the LCD 20x4 display?

Do you have a diagram of the circuit?
If this is part of a tutorial do you have the link to the tutorial?

3

artisticforge:
Which Ardunio Board are you using?
Which version Arduino IDE are you using?
Which operating system are you using?
Linux, MacOSX, MS Windows, other

What is the make and model of the LCD 20x4 display?

Do you have a diagram of the circuit?
If this is part of a tutorial do you have the link to the tutorial?

thanks you sir, i have the uno r3 and arduino ide newest downloaded today after fresh windows installation.
as for the lcd model idk it has the i2c daughterboard but i got it working with that code..
which i feel that its too long .. idk its working tho and about the tutorial and the library info.. im totally depending on the examples in the library idk if im allowed to link any tho.. but here it is

library: MUX74HC4067/examples/readAnalogSignals/readAnalogSignals.ino at master · nlamprian/MUX74HC4067 · GitHub
tutorial:
[tutorial] MUX74HC4067 | Codebender Blog

same wiring in the link for analog input, with potentiometers.

and the code...

#include "MUX74HC4067.h"
MUX74HC4067 mux(7, 8, 9, 10, 11);
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C  lcd(0x3F, 2, 1, 0, 4, 5, 6, 7);

void setup()
{
  Serial.begin(9600);
  lcd.begin(20, 4);

  lcd.setBacklightPin(3, POSITIVE);
  lcd.setBacklight(HIGH);
  mux.signalPin(A0, INPUT, ANALOG);
}

void loop()
{
  int a = 0; int b = 1; int c = 2;
  {
    int data[0];
    for (byte i = 0; i < 1; ++i)
      data[0] = mux.read(a);
    Serial.print("Sen Ch ");
    Serial.print(a);
    Serial.print(" Is ");
    Serial.print((double)(data[0]) * 100 / 1023);
    Serial.println("%");
    lcd.setCursor(0, 0);
    lcd.print("Sen Ch ");
    lcd.print(a);
    lcd.setCursor(8, 0);
    lcd.print(" Is ");
    lcd.print((double)(data[0]) * 100 / 1023);
    lcd.setCursor(19, 0);
    lcd.print("%");
  }
  {
    int data[1];
    for (byte i = 1; i < 2; ++i)
      data[1] = mux.read(b);
    Serial.print("Sen Ch ");
    Serial.print(b);
    Serial.print(" Is ");
    Serial.print((double)(data[1]) * 100 / 1023);
    Serial.println("%");
    lcd.setCursor(0, 1);
    lcd.print("Sen Ch ");
    lcd.print(b);
    lcd.setCursor(8, 1);
    lcd.print(" Is ");
    lcd.print((double)(data[1]) * 100 / 1023);
    lcd.setCursor(19, 1);
    lcd.print("%");
  }
  {
    int data[2];
    for (byte i = 2; i < 3; ++i)
      data[2] = mux.read(c);
    Serial.print("Sen Ch ");
    Serial.print(c);
    Serial.print(" Is ");
    Serial.print((double)(data[2]) * 100 / 1023);
    Serial.println("%");
    lcd.setCursor(0, 2);
    lcd.print("Sen Ch ");
    lcd.print(c);
    lcd.setCursor(8, 2);
    lcd.print(" Is ");
    lcd.print((double)(data[2]) * 100 / 1023);
    lcd.setCursor(19, 2);
    lcd.print("%");
  }
  delay(50);

  Serial.println();


  delay(1500);
}