character LCD module - 3.3V

Go To Last Post
6 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi,

Can anyone point me in the direction of a European retailer of alphanumeric LCD modules that operate at 3.3V - not too fussed about the dimensions though I'd like a width of at least 16 and a height of at least 2 lines. (I'm guessing 16x2 is going to be cheapest)

Cliff

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I think you will find most will work at 3.3V You just have to provide a -1V contrast.

But I am sure there will be some modules that look after their own contrast, or at least will operate with a +ve voltage. I cannot give you any links though.

David.

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hello,
Electronic assembly offers real 3.3V modules with 8bit, 4bit or SPI interface. 1, 2 or 3×16 characters, five different backlight, internal contrast by software and they are called DOG-M. Very nice.

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Not in Europe (at least that's what most inhabitants think :-)), but it might do: http://www.skpang.co.uk/catalog/...

Stealing Proteus doesn't make you an engineer.

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

David,

Yup I was just looking for an easy solution but it was actually one of your own posts in a previous thread I later found that put me onto a simple solution for using a 5V module and that's to take the -1V I need for a 5V module from the V- pin of the MAX232. Of course this raises the question of whether I actually need a MAX3232 but I'm kind of hoping that either the MAX232 or MAX202's I have in the box will work OK at 3V3

There are a number of 3V3 specific modules (many from China on ebay.co.uk) but I resent paying over the odds for them - presumably it's simply a supply/demand thing.

Cliff

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Farnell now stocks Powertip LCD modules. They will operate at 3V, but will need a negative supply for the contrast input. They don't need it for 5V operation.

Leon

Leon Heller G1HSM