Thanks for your help. Awesome library. Out of the 5 I tried, it has been the only one that has worked.

I just tested my 16×2 display in two line mode and it works fine. For example to print hello world on two lines:

lcd.print(hello);
lcd.move_to(1, 2);
lcd.print(hello);


If you don’t see anything at all in 2line mode, you might try adjusting contrast. Sometimes I find it needs to be tweaked when switching modes.

If this doesn’t help I’m afraid I’m out of ideas. Each LCD can sometimes have it’s own quirks I’m afraid.

Even when in 1LINE mode, using the move_to(17,1), only messages on the first line are printed.

I am attempting to do this within the Hello_4pin example included with your code.

Any help or suggestions will be greatly appreciated. Thanks for writing this library, it has been a great help!

If you’re interested, I’m using a Seiko SII L1682 display that I got from a Surplus store and it seems to be fully compatible.

The only thing I can think to suggest is just double check that the pins are all connected correctly and that your code reflects that.

I’ve used this library with pin assignment different than the defaults before without a problem.

So, I tried the 4 pin ‘hello world’ with this mapping:
lcd.set_ctrl_pins(CTRLPINS(10,9,8)); // RS->10, RW->9, E->8
lcd.set_data_pins(_4PINS(4,5,6,7)); // D4->4, D5->5, D6->6, D7->7

and don’t see anything

Before, when I used

lcd.set_ctrl_pins(CTRLPINS(1,2,3)); // RS->1, RW->2, E->3

It worked.

What I am missing here?

Thanks, –MA

What does get displayed? I would have expected your use of itoa function to work as expected.

Also, since you are using the Serial library, be sure you are NOT using pins 0 and 1 for your LCD. These pins are used by the Serial library.

Thank you for writing this library.

I have a question.

I was successfully able to set up and execute the “Hello World” example from the bottom of page: http://www.slashdev.ca/arduino-lcd-library/

I then modified it using Arduino’s Serial library: I sent a message and want the controller to print my text to the lcd.

The issue I’m having is that the Serial.read() returns an ‘int’ but the print for the LCD takes in a ‘char’ or ‘char*’.

I tried several things:
1.
integerRead = Serial.read();
Serial.println( integerRead, BYTE ); lcd.print(itoa(integerRead, charBufferArray, 10));

2. lcd.print(Serial.read());

3. itoa(integerRead, charArray, 10)

but none of these display what I want; the text that I’m sending.

Basically, what I want to do, again, is to read the characters that I’m sending via Serial (int) and print the ascii characters on the lcd.

Thanks,
–MA

lcd.clear();delay(3);
lcd.move_to(1,1);delay(3);
lcd.print(“Value: “);delay(3);

Thanks for sharing this library mate!