need help to use 2.4" TFT LCD with marlin v2.0 July 24, 2019 02:28PM |
Registered: 4 years ago Posts: 5 |
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 24, 2019 03:56PM |
Registered: 6 years ago Posts: 1,863 |
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 24, 2019 07:50PM |
Registered: 4 years ago Posts: 5 |
it seems that if i could manage to connect lcd in spi mode the problem is nearly solved. but wich pins in lcd module are used for spi mode??
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 24, 2019 09:17PM |
Admin Registered: 13 years ago Posts: 6,995 |
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 24, 2019 09:37PM |
Registered: 4 years ago Posts: 5 |
thank you sir.Quote
Dust
There is more to adding a new display that you have to consider...
a standard 128x64 display (8192 pixels) is at the limit of a 8 bit controller such as the mega can control while doing other things (if your running a delta even this resolution the refresh rate has to be turned down so it doesn't interfere with machine operations)
your trying to use a 240X320 display ( 76800 pixels) this is 9 time the work for the controller....
I wouldn't even consider trying this on a mega2560
But here is a datasheet for the ILI9341 [cdn-shop.adafruit.com]
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 24, 2019 09:50PM |
Admin Registered: 13 years ago Posts: 6,995 |
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 25, 2019 04:31PM |
Registered: 4 years ago Posts: 5 |
whhat about this one 192*64 GLCD by CrystlafontzQuote
Dust
Correct. Use a due or rearm or other 32 bit controllers.
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 26, 2019 06:47AM |
Admin Registered: 13 years ago Posts: 6,995 |
Re: need help to use 2.4" TFT LCD with marlin v2.0 July 26, 2019 08:56AM |
Registered: 4 years ago Posts: 5 |
Quote
Dust
Sorry but you clearly have no idea of the extent of what you are asking...
just getting it going is only half the battle, you then have to redesign all the displays to make use of the higher resolution... (presuming it has enough processing power to do it)
Its not like a operating system... where everything just adjusts to a new screen resolution.
Its know about 20x4 character displays (and a few smaller sizes) and 128x64 pixel displays and that about it.
Anything else you have to change everything that talks to the screen to know about the new sizes.
Possibly this will involve designing new graphics to use the higher resolutions,
Is it doable? yes, if you willing to put a months of work into it.
This may change as 32bit controllers become more common. people will push the hardware harder with larger displays
NB In case this is what is confusing you
The touch tft displays you seen on some printers are mostly not directly connected to the printers controller. they are their own display and firmware and controller that send gcodes to and from the main controller to do the various functions.