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Topic: Nokia 6100 LCD Display - Arduino Playground (Read 23 times) previous topic - next topic

Thomas Jespersen

Mar 14, 2009, 02:08 pm Last Edit: Mar 15, 2009, 12:01 am by tkj Reason: 1
Hi.
I've finally got the Nokia LCD i've ordered from Sparkfun: http://www.sparkfun.com/commerce/product_info.php?products_id=8600
Then i followed the guide on Arduino Playground: http://www.arduino.cc/playground/S1D15G10NokiaLCD/S1D15G10NokiaLCD and made the transistor voltage divider using
  • 4 BC547
  • 4 470Ohm Resistors
  • 4 4.7K Resistors


Then i used the 3V3 pin on the Arduino to get the 3.3V, and then i connected everything as shown.
Then i programmed the Arduino using the example code, and when it was programmed nothing happend!
The LCD was only Purple and hummed very much (caused by the backlight StepUp converter)

I have tried to find the problem, but I can't!
If i disconnect the LCD and the I/O lines from the Arduino, and then connect to test the voltage deviders, the output is 3.25-3.27V when I apply 5V - so no problem there!

Best Regards
Thomas Jespersen
Need any help with your electronics projects?
TKJ Electronics, a consultancy company located in Denmark (Europe), has the required ex

Thomas Jespersen

Have anyone worked with this board and display from Sparkfun?
Have anyone worked with the sample code from Arduino Playground?
Have anyone got it working (Board connected to Arduino as shown)?
Need any help with your electronics projects?
TKJ Electronics, a consultancy company located in Denmark (Europe), has the required ex

weirdo557

the lcd draws around 324 milliamps at 3.3 volts. the 3.3v pin can only supply 50 milliamps, you might need some external voltage regulator to power it.

Thomas Jespersen

#3
Mar 19, 2009, 09:58 pm Last Edit: Mar 19, 2009, 10:51 pm by tkj Reason: 1
You think that could cause the problem?
How much can the 5V then sink, because i have an LD33V (3V3 Voltage Converter)
Need any help with your electronics projects?
TKJ Electronics, a consultancy company located in Denmark (Europe), has the required ex

Thomas Jespersen

Now i've tried with an LD33V and it still doesn't work :(
Need any help with your electronics projects?
TKJ Electronics, a consultancy company located in Denmark (Europe), has the required ex

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