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211  Forum 2005-2010 (read only) / Development / Re: Help with LM3914 chip on: April 24, 2009, 04:35:52 am
Well basically when I connect everything according to the circuit above, when I turn the potentiometer connected to the pin 5. None of the pins on IC 1 (top IC on diagram) get any signal so no LED gets lit, and only 11-18 pins on IC 2 (bottom IC on diagram) gets lit.

As our friend "Rusty in Texas" mentioned, the reason why it doesn't work is coz there is no resistor on pin 7???

Or maybe the way I have done it, according to the diagram I've put on the thread, is wrong!?

M.
212  Forum 2005-2010 (read only) / Development / Re: Help with LM3914 chip on: April 24, 2009, 02:43:07 am
Also,

The pin 7 is connected to ground (-ve) after it's been connected to a resistor. Am I right?

M.
213  Forum 2005-2010 (read only) / Development / Re: Help with LM3914 chip on: April 24, 2009, 02:34:35 am
Cheers mate.

I will try that and will let you know the outcome.

Regards,
M.
214  Forum 2005-2010 (read only) / Development / Re: Help with LM3914 chip on: April 23, 2009, 03:57:11 pm
I've made this circuit but still doesn't work.

Anything I'm doing wrong?



Any help is appreciated.

M.
215  Forum 2005-2010 (read only) / Development / Re: Help with LM3914 chip on: April 22, 2009, 04:12:55 pm
Yes there is a diagram with 20 LEDs, but I don't know what to do with the rest of the pins to be honest.

Anymore complete diagrams at all?

Appreciated,
M.
216  Forum 2005-2010 (read only) / Development / Help with LM3914 chip on: April 22, 2009, 03:02:34 pm
I have 2 LM3914 chips which I'd like to connect together to power up 20 LEDs. I can do it with 1 chip for 10 LEDs according to the datasheet, but not with 2 chips.

Anyone here has had experice with this chip at all that could give me a hand please?

My input voltage is 5v.

An help is appreciated,

Regards,
M.
217  Forum 2005-2010 (read only) / Interfacing / Re: Nokia 6610 LCD how interface with Arduino Mega?? on: January 20, 2011, 07:51:47 am
 :'(
218  Forum 2005-2010 (read only) / Interfacing / Nokia 6610 LCD how interface with Arduino Mega?? on: January 20, 2011, 05:15:32 am
Hi,

I have got a Nokia 6610 LCD.

I have managed to interface it with an Arduino Duemilanive, however  I don't seem to be able to make it work with my Arduino Mega.

Has anyone has any problems with Mega at all before? Any help is much appreciated.

Here is the code I use:-

lcd.pde - 23.4 KB
219  Forum 2005-2010 (read only) / Interfacing / Re: Nokia 6610 LCD how to Draw Image?? on: January 20, 2011, 04:28:02 am
I managed to sort it out.

Thanks for all the help guys!

M.
220  Forum 2005-2010 (read only) / Interfacing / Re: Nokia 6610 LCD how to Draw Image?? on: January 14, 2011, 06:52:52 am
Fair enough. How would you code it for the Nokia 6610?

M.
221  Forum 2005-2010 (read only) / Interfacing / Re: Nokia 6610 LCD how to Draw Image?? on: January 14, 2011, 06:39:34 am
Thanks for your reply mate.

I'm not gonna use large images, just monochromic logos. Only 1 also.

M.
222  Forum 2005-2010 (read only) / Interfacing / Re: Nokia 6610 LCD how to Draw Image?? on: January 14, 2011, 06:31:26 am
Anybody?

Matin.
223  Forum 2005-2010 (read only) / Interfacing / Nokia 6610 LCD how to Draw Image?? on: January 13, 2011, 01:58:43 pm
I've got a Nokia 6610 LCD.

I am wondering how I can draw a BMP image on it using an Arduino?

Of course I have used the "BmpToArray" software to convert the image to an array.

Any help is appreciated.

Thanks,
M.
224  Forum 2005-2010 (read only) / Interfacing / Re: Android tablet USB to Arduino? on: December 03, 2010, 12:20:30 pm
There should be;

FDTI drievrs are Java based and Java should run on Android.

M.
225  Forum 2005-2010 (read only) / Interfacing / Re: Android tablet USB to Arduino? on: December 03, 2010, 11:35:14 am
I'm also interested in this.

Subscribed!
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