How do I display the keypad that has been pressed to the ESP webserver, apart from displaying the keypad output on the serial monitor?

void loop(){
char key = keypad.getKey(); // Create a variable named key of type char to store the characters pressed
if (key){ // If the key variable contains characters
Serial.print(“Key pressed: “);
Serial.println(key)
if (key >= ‘0’ && key <= ‘9’) { // act on numeric keypress
inputString += key;
}
else if (key == ‘#’) { // press # to enter
if (inputString.length() > 0) {
Serial.println(inputString);
}
}
else if (key == ‘*’) {
inputString = “”; // clear input
}
}

}

With the code snippet above, when I press buttons 1 2 3 4 then I press #, the inputString will display “1234” on the serial monitor on the Arduino. When I press 0 0 0 and #, the inputString wil display “1234000” on the serial monitor.

But I also want these characters to appear as text on the webserver, how do I do that?

Can I change line 12 and 13 to match the pins of the keypad?
This is such simple and great tutorial!

A keyboard with only 7 buttons? or you mean 7 rows? Here’s documentation on that subject: playground.arduino.cc/Main/I2CPortExpanderAndKeypads

I’m sorry I only speak Portuguese and English…

Thank you!