LCD and Arduino board

[Hidayah]

can u see what is wrong?

if i put the yellow jumper to the - bread board, the lcd and arduino will not on.. if i not put the yellow jumper it will turn on.

for easy to u, the yellow wayer is left side of transistor.

can u help me..

[robosang]

What do you mean by putting the yellow wire to breadboard? Which hole you are talking about? Please make yourself clear and do not confuse us. BTW, where is the transistor?

[Brian Griffin]

Hello,

You can draw a circuit like in Paint or something and paste it here as it is hard to determine the problem from just looking at the photo.

[Hidayah]

Sorry because of that picture... i just follow circuit like this picture...

my LCD is on but the lcd not display like picture, that lcd have line in the lcd.

[ABSF]

Arduino_cytron.jpg (79.79 KiB) Viewed 4836 times

The way you connect the variable resistor (pot) is wrong. The 3 wires to the pot are all in same row of connecting holes so the Vcc, Gnd and LCD contrast pins are all shorted together. That's why you have to remove the yellow wire which is ground so the the Vcc and Gnd are not shorted.

Allen

[Hidayah]

thanks alot sir.... my LCD have display the black blok...
my breadboard also have wrong... some hole is not function.

i try upload the simple code into arduino uno board.. but noting happen...

this is my code that copy from arduino example,
i just adjust of "LiquidCrystal lcd(7, 8, 9, 10, 11, 12)" because i connect LCD to arduino board using different pin like i attach :

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);

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

void loop() {
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
lcd.setCursor(0, 1);
// print the number of seconds since reset:
lcd.print(millis()/1000);
}

[ober]

Share a photo of your new hardware setup, please make it clearer as possible.

[Hidayah]

this is my wiring for LCD and arduino board.
the lcd had on and had line black box appear in LCD.

but after i upload the coding into arduino... nothing happen.... can u see what the problems?

thanks....

[Hidayah]

this is the wiring....

[yonghui]

why dont get http://cytron.com.my/viewProduct.php?pc ... d%20Shield
easier with library