Module Review #1 - LCD Keypad Shield for Arduino

In this episode I discuss the LCD Keypad Shield for Arduino. It is a fairly basic shield which features an LCD module, 6 buttons, a potentiometer and a power LED. Watch the video to find out more about my opinions on the module.

Keywords & Related Terms:
Arduino LCD
LCD Tutorial
Liquid Crystal Display Tutorial
Keypad LCD Shield
Keypad Tutorial
Arduino Buttons

[mbunds]

Your production has been up for awhile, but of many on YouTube that discuss how to use this module, yours finally helped me get the module working. Thank you!

[beehive]

Great video, I have a LCD Keypad Shield, but not using it in any of my project

[aaronh]

Thanks for the video. It's really going to help me out with a project I'm working on. If I may offer one piece of constructive criticism: Part way through the video the shield kept moving farther and farther down until it was off screen while you were still pointing out landmarks on the board. Perhaps a monitor or something that enables you to see it from the viewers angle while recording might help? Again, thank you for the video!

[ReDoG]

I don't have the Arduino Uno R3, I have the Elegoo MEGA2560 with more pins. How would this be utilized?

[davidli]

is there a way to use this on a breadboard and limit the amount of i/o it uses on the arduino? because im using a servo, lcd, and a buzzer, so i'd like to only plug in things that have to be plugged into the arduino for control

[rfpcs]

I have one just like your I brought from aliexpress a while back, I would like to see more on programing this key/LCD Shield. The way it is setup as an Analog is not what I had in mind either.

[taranagnew]

The buttons are on a0 and I want to be able to display if the buttons were pushed, what I'm trying to do is "whenever I press the select button, I want it to generate two separate numbes each going from 1 to 6

[taranagnew]

can someone plz post the library that you use for the this shield? thank you

[bqrtvfx]

does anyone know what to do when my potentiometer is stuck at 1023 even when i turn it?

[boosetteyuraei]

i wonder if you could add 1 more external switch..

[PrathameshJakka]

've tried everything still my LCD shield is not working, it just shows blue screen no boxes or anything, tried adjusting the potentiometer still nothing is displayed on screen

[taranagnew]

can someone provide me with the LCD keypad shield library that works and can the values of the buttons be different on other DFRobot lcd keypad shield

[beehive]

I am sharing your video list on Facebook, Twitter, Blogger I hope this helps

[fadhelahkhalaf]

hi ... the pwer led in the shield is not turn on >> is it burn ( i mean the sheild ????)

[taranagnew]

i'm trying to run a keypad value test to get the values of my lcd keypad shield, plz help
#include <LiquidCrystal.h>
lcd(8, 9, 4, 5, 6, 7);
int lcd;
int btnStr;
int currx;
int x;

void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Analog 0: ");
lcd.print(currx);
lcd.setCursor(0, 1);
lcd.print(btnStr);
}

void loop() {

x = analogRead(A0); // the buttons are read from the analog0 pin

// Check if x has changed
if ((x != 1023) && (x != currx)){

//update screen and change currx
lcd.setCursor(10, 0);
lcd.print(" ");
lcd.setCursor(10, 0);
lcd.print(x);
currx = x;

if (currx > 740 && currx < 745){

btnStr="Select";

} else if (currx > 500 && currx < 510){

btnStr="Left";

} else if (currx < 10){

btnStr="Right";

} else if (currx > 140 && currx < 150){

btnStr="Up";

} else if (currx > 320 && currx < 365){

btnStr="Down";

}

//update button pressed
lcd.setCursor(0, 1);
lcd.print(" ");
lcd.setCursor(0, 1);
lcd.print(btnStr);
}

delay(10);

}

i keep getting
Arduino: 1.8.6 (Windows 10), Board: "Arduino/Genuino Uno"

keypad_values.ino:2:4: error: expected constructor, destructor, or type conversion before '(' token

lcd(8, 9, 4, 5, 6, 7);

^

In function 'void setup()':

keypad_values.ino:10:7: error: request for member 'begin' in 'lcd', which is of non-class type 'int'

lcd.begin(16, 2);

^

keypad_values.ino:12:7: error: request for member 'clear' in 'lcd', which is of non-class type 'int'

lcd.clear();

^

keypad_values.ino:13:7: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(0, 0);

^

keypad_values.ino:14:7: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print("Analog 0: ");

^

keypad_values.ino:15:7: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print(currx);

^

keypad_values.ino:16:7: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(0, 1);

^

keypad_values.ino:17:7: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print(btnStr);

^

In function 'void loop()':

keypad_values.ino:28:9: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(10, 0);

^

keypad_values.ino:29:9: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print(" ");

^

keypad_values.ino:30:9: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(10, 0);

^

keypad_values.ino:31:9: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print(x);

^

warning: invalid conversion from 'const char*' to 'int' [-fpermissive]

btnStr="Select";

^

warning: invalid conversion from 'const char*' to 'int' [-fpermissive]

btnStr="Left";

^

warning: invalid conversion from 'const char*' to 'int' [-fpermissive]

btnStr="Right";

^

warning: invalid conversion from 'const char*' to 'int' [-fpermissive]

btnStr="Up";

^

warning: invalid conversion from 'const char*' to 'int' [-fpermissive]

btnStr="Down";

^

keypad_values.ino:57:11: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(0, 1);

^

keypad_values.ino:58:11: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print(" ");

^

keypad_values.ino:59:11: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(0, 1);

^

keypad_values.ino:60:11: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print(btnStr);

^

exit status 1
expected constructor, destructor, or type conversion before '(' token

[fahmylina]

Has anybody noticed that the (RIGHT) button just below the screen itself is wrongly typed (RIGHT) on this shield? Mine too. Why? Am I (RIGHT)?

[taranagnew]

can someone help me, the code is
const int buttonPin = A0; // the pin that the pushbutton is attached to
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button
#include <DFR_LCD_Keypad.h>
DFR_LCD_Keypad keypad(A0, &lcd);
int lcd;;
int diceOne;
int diceTwo;
#define KEY_SELECT

uint8_t read_key(void);


void backlight_on (void);

void setup() {
// initialize the button pin as a input:
pinMode(buttonPin, INPUT);
lcd.begin(16, 2);
lcd.setCursor(1, 0);
lcd.print("Roll the dice!");
}

void loop() {
if (KEY_SELECT) == HIGH {
// if the current state is HIGH then the button went from off to on:
diceOne = random(1, 7);
diceTwo = random(1, 7);
//read the pushbutton input pin:
buttonState = digitalRead(buttonPin);
// compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter

}
}
}
Arduino: 1.8.6 (Windows 10), Board: "Arduino/Genuino Uno"

warning: "KEY_SELECT" redefined

#define KEY_SELECT

^

In file included from

note: this is the location of the previous definition

#define KEY_SELECT DFR_LCD_KEYPAD_KEY_SELECT

^

dice_for_catan:5:28: error: 'lcd' was not declared in this scope

DFR_LCD_Keypad keypad(A0, &lcd);

^

In function 'void setup()':

dice_for_catan:19:7: error: request for member 'begin' in 'lcd', which is of non-class type 'int'

lcd.begin(16, 2);

^

dice_for_catan:20:7: error: request for member 'setCursor' in 'lcd', which is of non-class type 'int'

lcd.setCursor(1, 0);

^

dice_for_catan:21:7: error: request for member 'print' in 'lcd', which is of non-class type 'int'

lcd.print("Roll the dice!");

^

In function 'void loop()':

dice_for_catan:25:17: error: expected primary-expression before ')' token

if (KEY_SELECT) == HIGH {

^

dice_for_catan:25:19: error: expected primary-expression before '==' token

if (KEY_SELECT) == HIGH {

^

exit status 1
'lcd' was not declared in this scope

[dboer]

if the buttons are strange to u
STOP MAKING ARDUINO VIDEO'S