Is this LCD Display okay?

Forum 2005-2010 (read only) Hardware Interfacing
1

Hello everybody,

I just wondered if this LCD Display :

Would work with an arduino ?

Greetings

2

Well the data sheet is not in english but I could figure out that it has an SPI interface. You would have to write drivers for it but it should work. The arduino supports SPI.

Other than that it looks like a pretty good display. If you find a manual in english, please post it.

Mark

3

The module you linked to requires 3.3 (or less) supply voltage which requires som extra "effort" on your behalf with a 5V Arduino. You will also need 8 or 9 external capacitors.

The modules are extremely fragile (thin glass) and as such less than ideal for prototyping. Backlight is priced separetely and may be required depending on choice of color. A touch panel overlay is also available as an option.

A number of indivduals have successfully interfaced these to Arduino's and libraries are available for download (google for Arduino DOGM). English datasheets are available from the manufacturer (Electronic Assembly).

4

Here you go

5

Hey BenF,

thank you very much for your answer.
About the voltage. As you said the Arduino has a 5V output so that would be enough wouldn't it?

But anyway since your answer i'm probably not going to buy it :slight_smile: I just wondered that this display is so cheap in comparison to others.

I also find these which are pricly okay as well:

https://www.distrelec.ch/ishopWebFront/catalog/product.do/para/keywords/is/LCD-Textdisplays,_STN/and/language/is/de/and/shop/is/CH/and/series/is/1/and/id/is/01/and/node/is/DC-70805.html

Would they be a better option ? Or can you in general recommend a certain type of display ? The ony requirement is that it should have at least 2 lines with 16 charachters and it would be cool if it has backlight (but I think that gets quite expensive than.

Greetings

6

As you said the Arduino has a 5V output so that would be enough wouldn't it?

The issue is that 5V is too much - you need to bring it down to 3.3V or less.

If you're just starting with Arduino you may lower the threshold with getting something a bit easier to interface. There are a number of sources available for low cost 16x2 to 20x4 character LCD modules based on the Hitachi HD44780 controller. They require a single 5V supply only (for backlight and logic) and will work with the Arduino LCD library. I'm not sure if the modules you linked to are based on this controller (44780 or compatible) so you may want to check this out before you order.

7

Yeah sure 5V is too much but down would just require a single resistor to get it down to 3.3V ? So that would be a small problem.

anyways:

would that one be okay ?

Thing is I found a couple of displays that are compatible with 44780 but they are nearly double expensive...

And where are these sources for these low cost displays?

Greets

8

For a stable supply you will need a 3V3 voltage regulator and support components. Also you need to level shift logic singnals going from the 5V Arduino to the 3V3 module.

As for the alternative 5V LCD modules:

Yes, I think that display should be OK as it is based on the ST7066U controller (HD44780 compatible).

Here are some links:

http://ledsee.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=92&category_id=23&option=com_virtuemart&Itemid=27

http://www.seeedstudio.com/depot/lcd-162-characters-green-yellow-back-light-p-62.html?cPath=8

http://www.sureelectronics.net/goods.php?id=123

9

Okay :slight_smile: I actually found some guys via google who used the same LCD Display :slight_smile: Thank you very much for the friendly helping :slight_smile:
God bless you
Cheers

10

I've actually got another small question.

I know the output of the Arduino is 5 V but how many milliamps does it have?
Thing is i'm searching for a LDR for a Laser Triger.
How much restistance should it optimal give at 100 lux and at 10 lux ?

Thx in advance
Greets