Author Topic: [Solved] Contrast inequalities ?  (Read 5366 times)

0 Members and 1 Guest are viewing this topic.

Offline persalteas

  • LV5 Advanced (Next: 300)
  • *****
  • Posts: 231
  • Rating: +44/-4
  • z80 poweeer
    • View Profile
    • Tout-82
[Solved] Contrast inequalities ?
« on: August 08, 2013, 10:37:47 am »
Hello, at the begining of my program, I have put a "Contrast(28" to have a correct darkness and a pretty grayscale on my TI-84 Pocket.

Unfortunately, if I send the program to my 84 Plus SE, it makes a very high contrast, very dark...

The values are not the same between different models, are they ?
How can I detect the type of model to put a good value ?

Thank you for your help...
« Last Edit: August 17, 2013, 12:28:27 pm by persalteas »


Offline Hayleia

  • Programming Absol
  • Coder Of Tomorrow
  • LV12 Extreme Poster (Next: 5000)
  • ************
  • Posts: 3367
  • Rating: +393/-7
    • View Profile
Re: Contrast inequalities ?
« Reply #1 on: August 08, 2013, 10:49:10 am »
That doesn't really answer the problem, it's more of a workaround, but maybe you could, instead of "detecting the calc", add a "settings" option in the menu under which there would be a "calibrate greyscale" option that would set and save an adapted value for the contrast in an appvar ?
I own: 83+ ; 84+SE ; 76.fr ; CX CAS ; Prizm ; 84+CSE
Sorry if I answer with something that seems unrelated, English is not my primary language and I might not have understood well. Sorry if I make English mistakes too.

click here to know where you got your last +1s

Offline DrDnar

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 546
  • Rating: +97/-1
    • View Profile
Re: Contrast inequalities ?
« Reply #2 on: August 08, 2013, 11:18:26 am »
The LCDs are manufactured for TI by a third-party. There are many factories capable of manufacturing compatible LCDs, and TI simply chooses whichever offers the best price. There is no way for you to detect, in software, the properties of the LCD. The same thing is true for the LCD controller module. You just have to ask the end-user.
"No tools will make a man a skilled workman, or master of defense, nor be of any use to him who has not learned how to handle them, and has never bestowed any attention upon them. . . . Yes, [] the tools which would teach men their own use would be beyond price."—Plato's The Republic, circa 380 BC

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55941
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Contrast inequalities ?
« Reply #3 on: August 10, 2013, 10:25:32 am »
I know that 83+SE models are usually 6 contrast levels darker than the 83+ and the 84+/SE is 2-3 levels darker than the 83+, but I think it might vary from calc to calc. It's best to set a default value then let the user of the program change it.