Anybody could help at all?

M.

I've just purchased a SparkFun serial backpack.

When I connect it up the splash screen comes up of course. But not for 500ms, it stays there for longer!

Also when I program something and upload into Arduino, nothing shows!

The wiring is correct, I'm sure.

Any ideas?

Thanks.

which pins arrangements have you used?

M.

You need to use a pot on "pin 3" to adjust the contrast. If you don't have a pot just connect it to GND (ground) so you get maximum contrast. Should work.

M.

Will check that,

Cheers,

M.

<quote:>
Check pins 13 (D6)  and 14 (D7) on your LCD module.  It appears that these two lines are shorted so that they both get the same signal.  If either one is supposed to be HIGH then they both go HIGH.  
<quote:>

I don't quite get what you mean by this? Also if it helps my LCD has 16 pins.

M.

I printed all the characters as ASCII also, but got exactly the same characters as when inputing them as non ASCII.

Anymore ideas?

Appreciated.

M.

The pictures are correct, this is exactly what I get when using lcd 4-bit library.

I have checked the wirings they're all fine. Do you think it might be the solderings even?

M.

I used the pin numbers as you gave me.

And connected the pin 3 of the LCD to a pot for contrast adjustment.

Code is as follows:

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);

void setup()
{
  lcd.print("Hello, world!");
}

void loop() {}

For Hello, world! I get:


And for 1234, I get:


Exatcly the same result as before with LCD 4-BIT library.

Any ides?

M.

Thanks very much. I will try that and will let you know the outcome.

So for a simple exmaple shall I use the LiquidCrystal example that comes with Arduino library?

M.

When tried with the LCD 4-Bit library, I get data but some of the characters are funny.

When I tried the example in the last link (http://www.arduinoprojects.com/?q=node/13), which uses the LiquidCrystal I don't get any data in therefore nothing is shown on the LCD.

Also where can I get the wiring diagram for LiquidCrystal hello world example?

Thanks.
M.

I tried the LiquidCrystal library with this wiring:
http://www.arduinoprojects.com/?q=node/13

Is this right?

I didn't have any luck with the above wiring.

M.

I've checked all the wiring, all are fine.

I've wired it like this:
http://www.skpang.co.uk/content/view/29/42/

Is that right?

M

I've got a 16x2 LCD and got it kind of working with the LCD 4-bit library. The problem is for example when I use "lcd.printIn("1234")" What I get on the LCD is "123>" or when I put a character say "lcd.printIn("a")" I get a funny character on the display.

What the problem could be?

Any help is appreciated.

M