LCDInfo.com

I have looked around alot on this site for information on hooking up a Nokia 3310 LCD.
I found a couple of configurations:
* Zener diodes and resistors
* Direct wirering
* Using 7445 with 3.3 v circuit.

My tests have been done on a laptop.
Measuring the voltage on my LPT port, Pin7 to Pin25, it sais 5V
Connection the Zener diodes I measure 1.8 volts
Direct wirering gives 3.4v on pin 7 and 4.7v on data pins
I have not tested 7445 with 3.3 circuit.

I still have not got any test-picture on either of the couplings.
Any suggestions on what could be wrong?

For example, should I use the direct wirering for the power supply but zeners for data pins?

/Best regards

Michael

This would be great as it would help me set up my 3210 which should be very similar! is direct wiring or with diodes better?

I wrote something for u some time ago but it's in ...Greek. It's here http://www.hlektronika.gr/phpBB2/kat_lcd3.php

The guide uses the zener circuit.
You should understand the basics because of the many pictures, or use a translation page to translate from Greek to English.

If anything else fails, ask me!

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gsmaster

i used the same components on the board

it works fine

now i`m changing some of the screenfile`s to fit a 3310 display.

i have an analog clock, a digital clock, Camel and a bug

(1 made them work on a 84X48

Will it burn the 3310 LCD if i directly connect control lines to TTL level interface? I looked in datasheet, it says that absolute maximum rating for control lines is Vdd + 0.3V = 3.3-3.6V. Will LCD tolerate 5V?

mine are hooked directly here no burnt lcd BUT

this is with a nokia 5110 LCD im not sure if they are different

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