I bought a MK802 for a Car PC project that I am doing. I use to have a Windows based Car PC, so I already have six 7inch VGA w/ touchscreens installed. I bought the MK802 specifically for salvaging the screens and because of Androids mobile diversity.
Issue 1: The touch panel is USB based. I plug it in and a mouse pointer pops up on the screen. I am able to move to the left and right correctly. But up and down are inverted, so when I push on the top of the screen, the pointer is at the bottom and when I push at the bottom, it appears on the top. Is there a config file I can edit? maybe switch the commands for up and down?
Issue 2: The MK802 are built for high definition displays with high resolutions. I used a HDMI to VGA converter to convert it to the port I need. Issue is that the screen can only work at a resolution of 800 × 480 (1,152,000) pixels w/ display format: 4:3(800*600 default), 16:9 is optional. When I plug the two together, the screen turns to a red color. Thats with MK802 on 720p. Now if I change it to 480p, I can see the screen, but its not sitting correctly. Is there a file to adjust the resolution to a lower one that will make the screen happy?
Any help would be appreciated.
hijackzx1 said:
Issue 2: The MK802 are built for high definition displays with high resolutions. I used a HDMI to VGA converter to convert it to the port I need. Issue is that the screen can only work at a resolution of 800 × 480 (1,152,000) pixels w/ display format: 4:3(800*600 default), 16:9 is optional. When I plug the two together, the screen turns to a red color. Thats with MK802 on 720p. Now if I change it to 480p, I can see the screen, but its not sitting correctly. Is there a file to adjust the resolution to a lower one that will make the screen happy?
Click to expand...
Click to collapse
I think this can be done in screen. I remember seeing that in its option menu. I will test today and see if it works. Also, I noticed that I cant adjust the the format on the MK802. I had screwed something up and flashed the ROM to their supposed latest ROM. It adds a ton of features that seemed to be missing before, but has taken away other features like resolution adjustment.
How did this ever turn out. im looking into to doing something very similar. what do you use for sound processing. any help would be awesome.
Related
When I hook up my prime in r my 720 p TV everything works great, shows the whole screen. But when I hook it up to my 1080p screen it cuts off the outer edge if the screen all the way around. Thick enough to barley see the apps icon on the home screen. But it also does this on my Acer a 500, so I think it is a android issue. Is there a setting that I have never seen before to fix this?
Also I made sure its not the zoom, wide or stretch feature on the TV
Sent from my ADR6300 using xda premium
Got the same problem
monkey10120 said:
When I hook up my prime in r my 720 p TV everything works great, shows the whole screen. But when I hook it up to my 1080p screen it cuts off the outer edge if the screen all the way around. Thick enough to barley see the apps icon on the home screen. But it also does this on my Acer a 500, so I think it is a android issue. Is there a setting that I have never seen before to fix this?
Also I made sure its not the zoom, wide or stretch feature on the TV
Click to expand...
Click to collapse
this is an issue with your TV enabling overscan of the HDMI image. on my panasonic plasma TV i had to troll through the advanced picture settings and change the "HD Size" to "Size 2". i don't know why panasonic makes this the default but that's how it goes. once that setting was made the display was a perfect 1080p crop. changing zoom/wide/stretch doesn't solve this problem because all that does is adjust how a sub-1080p image is presented on the 1080p surface.
jackl8 said:
this is an issue with your TV enabling overscan of the HDMI image. on my panasonic plasma TV i had to troll through the advanced picture settings and change the "HD Size" to "Size 2". i don't know why panasonic makes this the default but that's how it goes. once that setting was made the display was a perfect 1080p crop. changing zoom/wide/stretch doesn't solve this problem because all that does is adjust how a sub-1080p image is presented on the 1080p surface.
Click to expand...
Click to collapse
This^^^^^^^^^^^^^^
My TV used to do the same, it's as he says: find overscan, give it the boot!
Having an unusual problem with outputting my AT&T Galaxy S2 (stock rom) over MHL to my television. Most stuff looks fine and is properly mirrored, but a couple of video streaming apps I use have an odd aspect ratio problem. Instead of mirroring exactly what's on my phone's screen, which looks fine, the video on my TV is forced to 4:3. (Not a big Netflix user, so this isn't one of the problem apps.) My TV doesn't have very many aspect ratio options, so the only change I can make there actually doubles the size of the black pillars. Is there anyway to fix this? Another thing I've noticed is that when it's outputting this way, the notification bar is still visible on my phone's screen, but it disappears on the TV.
So I tried to update my android's headunit firmware to JY-1.90 and now my screen is cut-off on the right and bottom side. My headunit's screen resolution was 800x480 and now it is 1024x600. Tried to change my resolution with a program (i have root access) but after changing the resolution the screen is still cutoff. As you can see in the video the touch is spot on like it should be but the display isnt.
Will try to post a video. What can I do to fix it?
Hi.
Just tried playing with RemixOS on a media center pc that I have attached to my TV. At the moment this pc is running a regular linux distro, but I thought it could be interesting to see how Android would work for this purpose. Problem is that my TV is an older 1080p 46" that suffers from an old issue where a large part of the screen is placed behind the massive border on the frame. As such, when running at highest resolution, I loose parts of the screen on each side, top and bottom. I found that running 1366x768 fixes this issue.
RemixOS of cause, is running at 1920x1080 by default, just like any other OS that I have had attached. Difference is that I have no way to change this. I tried changing DPI via kernel boot arguments, but this did not work as it should. The calculations for DPI
Code:
sqrt(1366^2 + 768^2)/46
states that the DPI should be set at 35. But doing so makes everything 100 times smaller on the screen.
How can I get this TV working with RemixOS?
I got an old Samsung S8 with some widescreen display, now I want to connect it to a 4k tv but I would like to use the whole screenspace without black bars. So can I set my phone to output 16:9. Maybe using Tasker?
Ok I got it done. Using Tasker with "run shell":
wm size 2160x3840
dont forget to check "use root" puts the device in 16:9, and I'm using the external screen resolution here, If I do something like HD it will only output HD and I want to have it in 4k.
Going back works with the internal screen settings menu or you create another task with the devices original resolution and aspect ratio.
Also combines nicly with:
setprop persist.demo.hdmirotation=portrait
To have that whole HDMI output in portrait mode.