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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10066

Posted: 07:31am 17 Mar 2017

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There are quite a few displays now on the market that are designed to work with the Raspberry Pi and these include some higher spec TFTs such as this one which has a 480 by 320 pixel resolution and uses IPS technology which is both brighter and has a better viewing angle than the cheaper TFT panels.

The set up of these is quite interesting. The display itself is run in 16-bit parallel mode but the PCB has a couple of 8-bit shift registers so that it can be controlled over an SPI channel as the Raspberry Pi doesn't have an easily accessible 16-bit parallel port.

The display is very neat with the viewable area only slightly smaller than the PCB it mounts on. It has the normal XPT2046 touch controller so is fully compatible with the Micromite.

The controller on the PCB is an ILI9481 (bigger version of the 9431) and I've included support for this in the MMX code V5.3.14

The command to initialise the display is exactly the same syntax as the ILI9341

OPTION LCDPANEL ILI9481, orientation, DCpin, Resetpin, CSpin

Unfortunately, because of the way the display is wired, transparent text and the BLIT command are not available on this display

The required connections on the 26-pin header are:
Pin-2 5V
pin-6 GND
pin-11 T_IRQ
pin-18 ILI_DC
pin-19 SPI2OUT
pin-21 SPI2IN
pin-22 ILI_RESET
pin-23 SPI2CLK
pin-24 ILI_CS
pin-26 T_CS

Edited by matherp 2017-03-18

WhiteWizzard
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Joined: 05/04/2013
Location: United Kingdom
Posts: 2927

Posted: 08:13am 17 Mar 2017

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Nice display with hopefully much better contrast (as well as better viewing angle).

The link you supplied describes it as a 4" screen. Can I kindly ask for some measurements please:

1> PCB sizt
2> Glass size
3> Viewing area size
4>Maximum overall thickness from glass front, to highest component BUT NOT the pin header!
5> Maximum thickness (i.e. with pin header)

Thanks

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10066

Posted: 08:27am 17 Mar 2017

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PCB 94x61.2
glass - same
view 83x54.3
thickness 7.2
thickness+header 18.6

Zonker

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Joined: 18/08/2012
Location: United States
Posts: 767

Posted: 12:58pm 17 Mar 2017

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I was hoping for a brighter, "daylight" readable unit... I need to check this out..!

Thank's Peter..!

geraldfryjr

Regular Member

Joined: 02/03/2014
Location: United States
Posts: 61

Posted: 02:15pm 02 Oct 2017

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Cool, I just ordered Two of them!!!

jer

Edited by geraldfryjr 2017-10-04

Keep on DIYin' !!!

erbp
Senior Member

Joined: 03/05/2016
Location: Australia
Posts: 195

Posted: 08:24pm 16 Oct 2017

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matherp said
The required connections on the 26-pin header are:
Pin-2 5V
pin-6 GND
pin-11 T_IRQ
pin-18 ILI_DC
pin-19 SPI2OUT
pin-21 SPI2IN
pin-22 ILI_RESET
pin-23 SPI2CLK
pin-24 ILI_CS
pin-26 T_CS

Hi,

I am looking for clarification as to the wiring for the ILI9481 LCD screen - specifically the SPI connections on Pins 19 and 21 of the LCD header. As listed above, the signal names appear to be the signals they connect to at the MM end. I just want to be sure this is the correct interpretation and the OUT and IN do not refer to the signals from the LCD controller's perspective.

Thanks,
Phil.

disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 971

Posted: 12:37am 17 Oct 2017

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The pins I used on an MMX100 are below.
It confirms that the labels given refer to the
the MM end for SPI2OUT and SPI2IN.

The required connections -------My MMX100
on the 26-pin header are:-------pins
Pin-2 5V
pin-6 GND
pin-11 T_IRQ-------------------100
pin-18 ILI_DC-------------------96
pin-19 SPI2OUT------------------66
pin-21 SPI2IN-------------------72
pin-22 ILI_RESET----------------95
pin-23 SPI2CLK------------------10
pin-24 ILI_CS-------------------97
pin-26 T_CS---------------------98

Regards
Gerry

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erbp
Senior Member

Joined: 03/05/2016
Location: Australia
Posts: 195

Posted: 01:42am 17 Oct 2017

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@Gerry

Thanks. I don't want to damage my new 4" IPS ILI9481 display (or MM) by having two SPIOUTs trying to drive the same connection.

Regards,
Phil.

Cremo
Newbie

Joined: 21/07/2015
Location: Italy
Posts: 36

Posted: 01:11pm 01 Jul 2019

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Hello,
this display seems very interesting.
I would like to know if in a near future it will be possible to use it with MM+.
Thank you.
Pietro

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10066

Posted: 01:48pm 01 Jul 2019

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Quote I would like to know if in a near future it will be possible to use it with MM+.

See Here

Cremo
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Joined: 21/07/2015
Location: Italy
Posts: 36

Posted: 02:03pm 01 Jul 2019

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Thank you.
Pietro

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