Arduino Forum

Forum 2005-2010 (read only) => Hardware => Troubleshooting => Topic started by: ckeulen5 on Jan 14, 2011, 04:52 am

Title: LCD Help
Post by: ckeulen5 on Jan 14, 2011, 04:52 am
Hi,

I recently purchased an lcd display:
http://www.solarbotics.com/products/18710/
When I tried to get it working by following this tutorial:
http://arduino.cc/en/Tutorial/LiquidCrystal
I had almost no output from the lcd, there seemed to be faint blocks that would show but nothing more. I have not soldered the connections to the lcd board yet, I just placed the board over the pins to make the connections. Could this be the problem? I am hesitant to solder it in case I need to return it. Are these components sensitive, could I have done something to fry it? Otherwise am I doing something wrong?

Thanks,
Casey
Title: Re: LCD Help
Post by: ckeulen5 on Jan 14, 2011, 05:41 am
Or to simplify my question from above. Should I go ahead and solder the pins on to the lcd and give it a try or should I try to return it because it may be faulty?

Thanks
Title: Re: LCD Help
Post by: forex2 on Jan 14, 2011, 11:59 am
i had a similar problem
connecting 5V to pin 15 and ground to pin 16 did make my text appear
Title: Re: LCD Help
Post by: ckeulen5 on Jan 14, 2011, 04:48 pm
I'll give that a try.

Thanks!!
Title: Re: LCD Help
Post by: floresta on Jan 14, 2011, 07:04 pm
Quote
Should I go ahead and solder the pins on to the lcd and give it a try or should I try to return it because it may be faulty?
Yes you should solder the pins before you condemn the board.  If it is faulty they should take it back anyway - how else could you determine if it works without connecting it to something.

Quote
connecting 5V to pin 15 and ground to pin 16 did make my text appear
Most if not all of the blue LCDs are illegible without powering the backlight so this is good advice.  Since the backlight is rated at less than 5v you should probably use a series resistor in the line to pin 15.

Don
Title: Re: LCD Help
Post by: ckeulen5 on Jan 14, 2011, 07:13 pm
Great, that's exactly what I wanted to know. Can't wait to get home to try it out.

Thanks!!
Title: Re: LCD Help
Post by: ckeulen5 on Jan 16, 2011, 02:04 am
That did the trick!!

Thanks alot!!