Ipad 3/4 Display with HDMI converter board

Discussion about displays and related hardware including MiSTer filters and video settings.
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belgarcat
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by belgarcat »

Yes, you have to search for the LP097QX1 reference.
Maybe if you buy the controller board and the screen separately you can get a better price.
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hernan43
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by hernan43 »

I have a board that looks basically identical to that one. It works great but it _needs_ a heatsink of some kind. That main chip gets very hot.

Other sellers of that board include a heatsink. For whatever reason mine did not. I happened to have a spare parts heatsink so I lucked out.
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Vespa »

Does anybody have a board that lets you use widescreen aspect ratios? The LCD board I have has the option but its greyed out (like a lot of other options), it would be nice to use this screen with other devices.
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Teddy
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Teddy »

Sigismond0 wrote: Mon Jan 11, 2021 10:02 pm Sneak peek at a 3d model I'm currently working on. I'd say it's about 90% done, currently just stuck with a few tweaks and reprints until I'm happy. As of right now, everything but the front bezel piece fits pretty well. Will be available with a 100mm VESA style mount with captive M3 nuts, or with a desktop stand. Uses M2 self-tapping screws for assembly (12x 4mm, 25x 8mm most likely).
This looks awesome. Do you have an ETA on when you think you'll be done?

Great job 👏
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Sigismond0 »

Teddy wrote: Mon Feb 22, 2021 11:44 am
This looks awesome. Do you have an ETA on when you think you'll be done?

Great job 👏
Like two days after that post!

https://www.thingiverse.com/thing:4721767
allegrosurf
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by allegrosurf »

Sigismond0 wrote: Mon Feb 22, 2021 10:07 pm
Teddy wrote: Mon Feb 22, 2021 11:44 am
This looks awesome. Do you have an ETA on when you think you'll be done?

Great job 👏
Like two days after that post!

https://www.thingiverse.com/thing:4721767
Hi @Sigimond0,
I just wonder, this is the correct control board to fit on your 3d printed case?
https://www.aliexpress.com/item/1005001779837870.html
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by muthuxmut »

Poeskas wrote: Fri Jan 22, 2021 2:03 am
muthuxmut wrote: Sun Jan 17, 2021 12:01 pm Just a quick sanity check - is this combo the "right" one for low latency retina goodnees ?
https://www.aliexpress.com/item/32955678219.html

Thanks:)
Wondering the same!
well i have this now and on 5V via micro usb supply its working OK. Some weird flickering at times ?? and the sound drops in and out.
I havent given it a full shake down yet, but right now i think its going to work out.
I'll get a 12V psu and sort out the .ini settings in MiSTer and hopefully its a winner
Galaga Tragic :)
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Sigismond0 »

allegrosurf wrote: Fri Mar 12, 2021 7:01 am Hi @Sigimond0,
I just wonder, this is the correct control board to fit on your 3d printed case?
https://www.aliexpress.com/item/1005001779837870.html
No, that one looks like it has an extra small board, and thicker connectors.
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by allegrosurf »

Sigismond0 wrote: Mon Mar 15, 2021 5:35 pm
allegrosurf wrote: Fri Mar 12, 2021 7:01 am Hi @Sigimond0,
I just wonder, this is the correct control board to fit on your 3d printed case?
https://www.aliexpress.com/item/1005001779837870.html
No, that one looks like it has an extra small board, and thicker connectors.
Hi @Sigimond0,
Sorry to bother you again, I just want to make sure, i dont want to buy a wrong one. Because i already printed the case, which one is the correct one

This one?
https://www.aliexpress.com/item/4000041589440.html
Or this one?
https://www.aliexpress.com/item/4000817738201.html
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Sigismond0 »

allegrosurf wrote: Tue Mar 16, 2021 3:49 am Hi @Sigimond0,
Sorry to bother you again, I just want to make sure, i dont want to buy a wrong one. Because i already printed the case, which one is the correct one

This one?
https://www.aliexpress.com/item/4000041589440.html
Or this one?
https://www.aliexpress.com/item/4000817738201.html
This one: https://www.aliexpress.com/item/4000817738201.html

Looks identical to the one I bought: https://www.amazon.com/gp/product/B07R4VR9PR
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by allegrosurf »

Sigismond0 wrote: Thu Mar 18, 2021 7:42 pm
allegrosurf wrote: Tue Mar 16, 2021 3:49 am Hi @Sigimond0,
Sorry to bother you again, I just want to make sure, i dont want to buy a wrong one. Because i already printed the case, which one is the correct one

This one?
https://www.aliexpress.com/item/4000041589440.html
Or this one?
https://www.aliexpress.com/item/4000817738201.html
This one: https://www.aliexpress.com/item/4000817738201.html

Looks identical to the one I bought: https://www.amazon.com/gp/product/B07R4VR9PR
Thanks alot @Sigimond0, for your information, going to order the control board next week..
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by SeeJ »

vypr wrote: Sun Aug 16, 2020 3:49 pm Thanks, I don’t want to assume, but can anyone also confirm if the power is center positive polarity?
Hi sorry to resurrect an old thread, but can someone confirm it is indeed centre-positive?

Thanks!
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by dawshan »

SeeJ wrote: Thu Apr 15, 2021 9:50 pm
vypr wrote: Sun Aug 16, 2020 3:49 pm Thanks, I don’t want to assume, but can anyone also confirm if the power is center positive polarity?
Hi sorry to resurrect an old thread, but can someone confirm it is indeed centre-positive?

Thanks!
Yes, it's center positive.
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by snoot »

Has anyone tried powering the DE-10 via the USB port on the board? It claims it supplies 2.5A so could potentially given a suitable 12V supply powering the board.

Also, the board has 'speaker out' connections, anyone managed to hook those up for sound to small speakers?
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by muthuxmut »

snoot wrote: Tue May 18, 2021 2:16 pm Has anyone tried powering the DE-10 via the USB port on the board? It claims it supplies 2.5A so could potentially given a suitable 12V supply powering the board.

Also, the board has 'speaker out' connections, anyone managed to hook those up for sound to small speakers?
I havent tried the display usb as a psu source for the de10
sound 'works' briefly and then turns into a crackly mess
I think the bandwidth is at a critical limit just doing the crazy resolution, so once it hits a point where the bandwidth is overwhelmed it needs a power cycle to recover
Galaga Tragic :)
GromRGB
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by GromRGB »

Hi,

Aliexpress try to send me a board 2 times less expensive.

https://fr.aliexpress.com/item/1005002631383788.html

Is anyone try this one to see if it is too lag free ?
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Kintaro »

Can anybody confirm that this iPad screen and driver combination can sync to PAL cores like Minimig or C64 with vsync=2 ?

For me smooth scrolling is an essential par of the retro experience.

Thanks in advance!
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by TwinX »

Kintaro wrote: Sun May 23, 2021 11:53 am Can anybody confirm that this iPad screen and driver combination can sync to PAL cores like Minimig or C64 with vsync=2 ?

For me smooth scrolling is an essential par of the retro experience.

Thanks in advance!
Works on my system , tested with 1080P. I only do not know how to get full screen
socksfelloff
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by socksfelloff »

steveskr wrote: Sat Aug 01, 2020 10:32 pm I bought a 12V 3A adapter from Amazon with a 3.5mm connector and an adapter to convert that to the 1.35mm connector on the HDMI converter board. I updated my mister.ini with settings for the iPad 3 display (1536p) and attempted to boot. No video on the iPad display and the two LEDs near the power connector on the converter board are flashing.

Here's a photo of my setup.. Any ideas? Dead converter board?


IMG-5699.jpg
Mine came yesterday and I've got the same problem. The two leds just flash. Did you determine this was definetly a faulty board?

*edit* Figured out the problem. My board just doesn't want to run off 5v usb even to test but it works perfect with 12
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by muthuxmut »

socksfelloff wrote: Tue Jun 01, 2021 10:34 am *edit* Figured out the problem. My board just doesn't want to run off 5v usb even to test but it works perfect with 12
the one i bought (linked above) is OK at 5v via usb, but i had to use a 2.5A psu from a pi3 to get it to work, anything less wont fire up.
but i didnt pay any attention to the LEDs sorry, so i dont know if its the same thing
Galaga Tragic :)
socksfelloff
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by socksfelloff »

muthuxmut wrote: Wed Jun 02, 2021 10:01 am
socksfelloff wrote: Tue Jun 01, 2021 10:34 am *edit* Figured out the problem. My board just doesn't want to run off 5v usb even to test but it works perfect with 12
the one i bought (linked above) is OK at 5v via usb, but i had to use a 2.5A psu from a pi3 to get it to work, anything less wont fire up.
but i didnt pay any attention to the LEDs sorry, so i dont know if its the same thing
Thanks for the reply. I used a 5v 3a psu that I also use for my pi3 and it would power the board if the screen was disconnected. If I connected the screen I'd get the blinking lights.

I have a feeling alot of these Psu's are incorrectly labeled
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Sorgelig »

Even though some boards will work from 5V (mine does), the brightness will be awful. So i suggest to use 12V anyway.
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by socksfelloff »

Sorgelig wrote: Wed Jun 02, 2021 11:10 am Even though some boards will work from 5V (mine does), the brightness will be awful. So i suggest to use 12V anyway.
Despite having a giant bin of old adapters I didn't have a 1.35mm for it! I was hoping to just test that it worked off usb (after all why even include it?) While I waited for my adapter to come.

Gotta say I'm super happy with it now! All I had to do was select the resolution and everything just worked, no more manually editing the ini!
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by orange428 »

Hi, so is video_mode=13 the current recommended setting for native resolution on this panel? Or use one of the custom video_mode settings I've seen on this board and other places. Sorgelig posted this one at the top of the Custom Video Modes Test Thread:

video_mode=2048,48,32,80,1536,2,4,38,209250

but that was over a year ago.

I've also seen other places (retrorgb.com/smokemonster) suggest this:

video_mode=2048,26,32,48,1536,3,6,12,200000

Also you can calculate a reduced blanking v2 modeline using cvt12 on linux...for example:

./cvt12 2048 1536 60 -b
# 2048x1536 @ 60.000 Hz Reduced Blank (CVT) field rate 60.000 Hz; hsync: 94.800 kHz; pclk: 201.73 MHz
Modeline "2048x1536_60.00_rb2" 201.73 2048 2056 2088 2128 1536 1566 1574 1580 +hsync -vsync

which translates to:

video_mode=2048,8,32,40,1536,30,8,6,201730

Does anyone know what video_mode=13 is based on?

My feeling is that we should be using video_mode=13 now and all the custom modes were from before video_mode=13 was officially added to the ini file as a preset resolution.

But if anyone can confirm this that would be nice. Thanks.
Kingteepee
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by Kingteepee »

can someone please copy and past their ini so i can see if my display board is defective works with my pc and my switch but i cant get a picture on my mister
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tid
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by tid »

orange428 wrote: Mon Jul 05, 2021 8:53 pm Does anyone know what video_mode=13 is based on?
https://github.com/MiSTer-devel/Main_Mi ... /video.cpp

Code: Select all

vmode_t vmodes[] =
{
	{ { 1280, 110,  40, 220,  720,  5,  5, 20 },  74.25  }, //0
	{ { 1024,  24, 136, 160,  768,  3,  6, 29 },  65     }, //1
	{ {  720,  16,  62,  60,  480,  9,  6, 30 },  27     }, //2
	{ {  720,  12,  64,  68,  576,  5,  5, 39 },  27     }, //3
	{ { 1280,  48, 112, 248, 1024,  1,  3, 38 }, 108     }, //4
	{ {  800,  40, 128,  88,  600,  1,  4, 23 },  40     }, //5
	{ {  640,  16,  96,  48,  480, 10,  2, 33 },  25.175 }, //6
	{ { 1280, 440,  40, 220,  720,  5,  5, 20 },  74.25  }, //7
	{ { 1920,  88,  44, 148, 1080,  4,  5, 36 }, 148.5   }, //8
	{ { 1920, 528,  44, 148, 1080,  4,  5, 36 }, 148.5   }, //9
	{ { 1366,  70, 143, 213,  768,  3,  3, 24 },  85.5   }, //10
	{ { 1024,  40, 104, 144,  600,  1,  3, 18 },  48.96  }, //11
	{ { 1920,  48,  32,  80, 1440,  2,  4, 38 }, 185.203 }, //12
	{ { 2048,  48,  32,  80, 1536,  2,  4, 38 }, 209.318 }, //13
};
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by muthuxmut »

Kingteepee wrote: Sat Jul 10, 2021 3:39 am can someone please copy and past their ini so i can see if my display board is defective works with my pc and my switch but i cant get a picture on my mister

Code: Select all

[MiSTer]
key_menu_as_rgui=0     ; set to 1 to make the MENU key map to RGUI in Minimig (e.g. for Right Amiga)
forced_scandoubler=0   ; set to 1 to run scandoubler on VGA output always (depends on core).
ypbpr=0                ; set to 1 for YPbPr on VGA output.
composite_sync=0       ; set to 1 for composite sync on HSync signal of VGA output.
vga_scaler=0           ; set to 1 to connect VGA to scaler output.
hdmi_audio_96k=0       ; set to 1 for 96khz/16bit HDMI audio (48khz/16bit otherwise)
keyrah_mode=0x18d80002 ; VIDPID of keyrah for special code translation (0x23418037 for Arduino Micro)
vscale_mode=1          ; 0 - scale to fit the screen height.
                       ; 1 - use integer scale only.
                       ; 2 - use 0.5 steps of scale.
                       ; 3 - use 0.25 steps of scale.
vscale_border=0        ; set vertical border for TVs cutting the upper/bottom parts of screen (1-399)
;bootscreen=0          ; uncomment to disable boot screen of some cores like Minimig. 
;mouse_throttle=10     ; 1-100 mouse speed divider. Useful for very sensitive mice
rbf_hide_datecode=0    ; 1 - hides datecodes from rbf file names. Press F2 for quick temporary toggle
menu_pal=0             ; 1 - PAL mode for menu core
hdmi_limited=0         ; 1 - use limited (16..235) color range over HDMI
                       ; 2 - use limited (16..255) color range over HDMI, for VGA converters.
direct_video=0         ; 1 - enable core video timing over HDMI, use only with VGA converters.
fb_size=0              ; 0 - automatic, 1 - full size, 2 - 1/2 of resolution, 4 - 1/4 of resolution.
fb_terminal=1          ; 1 - enabled (default), 0 - disabled
osd_timeout=30         ; 5-3600 timeout (in seconds) for OSD to disappear in Menu core. 30 seconds if not set.
                       ; Background picture will get darker after double timeout
osd_rotate=0           ; Display OSD menu rotated,  0 - no rotation, 1 - rotate right (+90°), 2 - rotate left (-90°)                  

; 1 - enables the recent file loaded/mounted.
; WARNING: This option will enable write to SD card on every load/mount which may wear the SD card after many writes to the same place
;          There is also higher chance to corrupt the File System if MiSTer will be reset or powered off while writing.
recents=0

; lastcore - Autoboot the last loaded core (corename autosaved in CONFIG/lastcore.dat) first found on the SD/USB
; lastexactcore - Autoboot the last loaded exact core (corename_yyyymmdd.rbf autosaved in CONFIG/lastcore.dat) first found on the SD/USB
; corename - Autoboot first corename_*.rbf found on the SD/USB
; corename_yyyymmdd.rbf - Autoboot first corename_yyyymmdd.rbf found on the SD/USB
;bootcore=lastcore    ; uncomment to autoboot a core, as the last loaded core.

; 10-30 timeout before autoboot, comment for autoboot without timeout.
bootcore_timeout=10

; Option to load the custom font. Format is plain bitmap 8x8.
; Supported sizes of font:
;   768 bytes - chars 32-127 (only alpha + numeric)
;  1024 bytes - chars 0-127
;  1136 bytes - chars 0-141
;  up to 2048 - only chars 0-141 will be used.
; if first 32 chars are empty (for sizes 1024 bytes and more) then they are skipped.
font=font/myfont.pf

; USER button emulation by keybaord. Usually it's reset button.
; 0 - lctrl+lalt+ralt (lctrl+lgui+rgui on keyrah)
; 1 - lctrl+lgui+rgui
; 2 - lctrl+lalt+del
; 3 - same as 0 (lctrl+lalt+ralt on keyrah)
reset_combo=0

; set to 1 for DVI mode. Audio won't be transmitted through HDMI in DVI mode.
dvi_mode=1

; 0 - 1280x720@60
; 1 - 1024x768@60
; 2 - 720x480@60
; 3 - 720x576@50
; 4 - 1280x1024@60
; 5 - 800x600@60
; 6 - 640x480@60
; 7 - 1280x720@50
; 8 - 1920x1080@60
; 9 - 1920x1080@50
;10 - 1366x768@60
;11 - 1024x600@60
;12 - 1920x1440@60
;13 - 2048x1536@60
;
custom mode: hact,hfp,hs,hbp,vact,vfp,vs,vbp,Fpix_in_KHz
;   video_mode=1280,110,40,220,720,5,5,20,74250
video_mode=13


; set to 1-10 (seconds) to display video info on startup/change
video_info=0

; Set to 1 for automatic HDMI VSync rate adjust to match original VSync.
; Set to 2 for low latency mode (single buffer).
; This option makes video butter smooth like on original emulated system.
; Adjusting is done by changing pixel clock. Not every display supports variable pixel clock.
; For proper adjusting and to reduce possible out of range pixel clock, use 60Hz HDMI video
; modes as a base even for 50Hz systems. 
vsync_adjust=1

; If you monitor doesn't support either very low (NTSC monitors may not support PAL) or 
; very high (PAL monitors may not support NTSC) then you can set refresh_min and/or refresh_max
; parameters, so vsync_adjust won't be applied for refreshes outside specified.
; These parameters are valid only when vsync_adjust is non-zero.
refresh_min=0
refresh_max=0

; These parameters have the same format as video_mode.
; You need to supply both PAL and NTSC modes if you want vsync_adjust to switch between
; predefined modes as a base. This will reduce the range of pixel clock.
;video_mode_ntsc=0
;video_mode_pal=7

; 1-10 (seconds) to display controller's button map upon first time key press
; 0 - disable
controller_info=6

; JammaSD/J-PAC/I-PAC keys to joysticks translation
; You have to provide correct VID and PID of your input device
; Examples: Legacy J-PAC with Mini-USB or USB capable I-PAC with PS/2 connectors VID=0xD209/PID=0x0301
; USB Capable J-PAC with only PS/2 connectors VID=0x04B4/PID=0x0101
; JammaSD: VID=0x04D8/PID=0xF3AD
jamma_vid=0x04D8
jamma_pid=0xF3AD

; Disable merging input devices. Use if only player 1 works.
; Leave no_merge_pid empty to apply this to all devices with the same VID.
;no_merge_vid=0x045E
;no_merge_pid=0x028E

; Speeds in sniper/non-sniper modes of mouse emulation by joystick 
; 0 - (default) - faster move in non-sniper mode, slower move in sniper mode.
; 1 - movement speeds are swapped.
sniper_mode=0

; Uncomment following option if you don't want to see a second line for long file names in listing.
;browse_expand=0

; 0 - disable MiSTer logo in Menu core
logo=1

; Custom shared folder for core supporting this feature (currently minimig and ao486 only)
; Can be relative to core's home dir or absolute path.
; Path must exist before core start to use it, or it will fail.
; Make sure USB device is mounted before use shared folder on USB!
shared_folder=

; Custom aspect ratio
;custom_aspect_ratio_1=16:10
;custom_aspect_ratio_2=1:1

; use specific (VID/PID) mouse X movement as a spinner and paddle. Use VID=0xFFFF/PID=0xFFFF to use all mice as spinners.
; spinner_throttle with base value 100 gives one spinner step per one tick. Higher value makes spinner slower.
; Lower than 100 makes spinner faster. Negative value gives opposite direction.
;spinner_vid=0x1BCF
;spinner_pid=0x0005
;spinner_throttle=-50

; Default filters for video scaler and audio. Paths must be relative to scaler/audio filter filders without leading slash.
;vfilter_default=LCD_Effect/07.txt
;afilter_default=LPF2000_3tap.txt

Galaga Tragic :)
orange428
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by orange428 »

thanks tid...i didn't think about looking in the source files. it's basically the same line Sorgelig posted a year ago.
SDLearmonth
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by SDLearmonth »

Finally set up my screen, cheers Greg!

Love this thing, you can get away with using non-integer scaling and you wont end up with noticeable shimmer, due to the high PPI of the screen for its size. So I tend to leave everything on 4:3 to fill the screen and use the "no interpolation" filter, apart from handhelds.

Low lag sync mode works for most cores except some arcade stuff and GBA, where it will just drop sync. For now I just use Alt1 config to switch to the 60Hz mode for those cores when needed. Sadly I can't get it to sync to the OSSC at all.

Speakers are louder than I expected for their size - little 1W 8ohm ones I used, soldered to the pins on the board rather than sourcing a molex connector.

MBg6bDX.jpeg
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numbski
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Re: Ipad 3/4 Display with HDMI converter board

Unread post by numbski »

Sorry to tack onto this thread, but I am wanting to order a 12v 3a power for this screen, and I have seen two different plug sizes mentioned. One is 3.5mm, and another is 1.35mm. Which one is it, and is it positive or negative tip?
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