Arduino + LCD Serial Shield.

Forum 2005-2010 (read only) Hardware Interfacing
1

I use a Mega Shield sensor and a LCD Serial Shield.

The LCD serial Link

I use this code but no display

int switchPin = 7;
int value = 0;

void setup() {
  Serial.begin(9600);
  pinMode(switchPin, INPUT);
}

void loop() {
  if (HIGH == digitalRead(switchPin)){
    Serial.print("$CLEAR\r\n");
    Serial.print("$GO 1 1\r\n");
    Serial.print("$PRINT Flamingo  EDA\r\n");
    Serial.print("$GO 2 4\r\n");
    Serial.print("$PRINT Hello World!\r\n");
    Serial.print("$CURSOR 1 1\r\n");
  }
}

The sensor shield and LCD serial are connected with I2C cable.

Is there something missing in code?
Do i need to initialize I2C?
I already test serial1,serial2, serial3 with also no display.

Thx

DS

2

Why add the complexity of a switch. Put all the code to run the LCD in setup. That will tell you whether the problem is with the LCD or the way that the switch is wired.

3

Hello,

I tried :

void setup() 
{

  Serial.begin(9600);
  Serial.print("$PRINT Test\r\n");
}

void loop() {}

And nothing displayed also.

DS

4

You haven't said anything about how the LCD is connected to the Arduino.

5

OK I resolved my problem, I was on the I2C bus and not on the COM port.

Just silly !

Thx anyway for fast replies

DS