Can someone PLEASE tell me what is wrong with this wiring??

[Tierod]

I don't know what I'm doing wrong. I know the screen works on 5V, and I can even tell power is getting to it, but I'm not getting a video output! Is there something off in my wiring? And do I need to connect the white wire to anything?

IMG_20160802_194555718.jpg (4.64 MiB) Viewed 9841 times

IMG_20160802_194631689.jpg (4.74 MiB) Viewed 9841 times

IMG_20160802_194606565.jpg (4.45 MiB) Viewed 9841 times

[DarkTyrian]

I have not built my GBz yet, but I just looked at Wermy's blog and it looks like you have the yellow in the wrong spot and the white should be where the yellow is now.

http://sudomod.com/wp-content/uploads/2 ... .10.16.jpg

He also states "To get a picture out of it, you need an SD card inserted into the pi with an OS on it. This can be vanilla Raspbian, or Retropie if you like. Just be sure to download the one for the Pi Zero if you go with Retropie. "

Here is the page I pull the info from.
http://sudomod.com/game-boy-zero-guide-part-3/

[ChunkeeMunkee]

Think this guide should help (thanks @Fleder!)

http://sudomod.com/forum/viewtopic.php?f=22&t=958

[Tierod]

I have tried all combinations of the wiring you both suggested and none of them worked. HDMI output works great, so I know the OS is running fine. What are the chances my Pi shipped with a faulty TV out pad? I can't think of anything else.

[Tierod]

Proof that the screen works.

14701942290451354369048.jpg (5.76 MiB) Viewed 9815 times

[SidSilver]

Have you check the config.txt ? you have to modify it to out on composite
Have a look at this : https://github.com/recalbox/recalbox-os ... osite-(EN)

[spoiler="You can also copy my recalbox conf.txt to have auto hdmi-composite selection at boot"]

Code: Select all

disable_overscan=0

sdtv_mode=2
hdmi_group=1
hdmi_mode=16

# Overclock
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=512

#hdmi_force_hotplug=1
temp_limit=65

kernel=zImage

disable_overscan=0
overscan_scale=1
arm_freq=1000
core_freq=250
sdram_freq=450
force_turbo=0
over_voltage=6
over_voltage_sdram=0
gpu_freq=250

On Retropie I don't know how it works but on Recalbox you also have to edit the "/recalbox/share/system/recalbox.conf to set "global.videomode=default"[/spoiler]

You should cut or ground the white wire as you don't need it and it can get noise.

[Mischief]

I have not built my GBz yet, but I just looked at Wermy's blog and it looks like you have the yellow in the wrong spot and the white should be where the yellow is now.

http://sudomod.com/wp-content/uploads/2 ... .10.16.jpg

He also states "To get a picture out of it, you need an SD card inserted into the pi with an OS on it. This can be vanilla Raspbian, or Retropie if you like. Just be sure to download the one for the Pi Zero if you go with Retropie. "

Here is the page I pull the info from.
http://sudomod.com/game-boy-zero-guide-part-3/

The screen is has 2 channels yellow is av1 and white is av2 so no need to hook up both, my screen is the same and is hooked up in the exact same way and it works great.

I don't know what I'm doing wrong. I know the screen works on 5V, and I can even tell power is getting to it, but I'm not getting a video output! Is there something off in my wiring? And do I need to connect the white wire to anything?

I had some issues so I removed the chip before I put the 5V bypass try that first.

[spoiler="show me the image"]

(Ignore the extra black wire it's not needed)

[/spoiler]

[Tierod]

SOLVED! After all but giving up, I tried to edit my config.txt again after having no success the first time. I forced composite by turning off HDMI hotplugging. I don't know if this is what I was supposed to do from the beginning or wether it was a wierd bug. Did all of you have to do this? I jumped for joy when I saw that rainbow splash screen. Now, that that's solved it's back to work!

PS: For anyone else with this problem, to force Composite put your SD card with retropie installed and open it up. Your computer should read that card's name is "boot". In there is the config.txt.
Go to the line that says
#sdtv_mode=2
and delete the # symbol (to uncomment it)
Then go to the end of the file and type
hdmi_ignore_hotplug=1

This should force Composite.

[RetroGamingNow]

So am i right in what im reading that we do not need to hook up both the white and the yellow wires? I have the adafruit screen and am using helders all in one board. I have both hooked up and it works great but if it will get less noise by removing the white then im thinking i should remove it?

[SidSilver]

@Tierod : have you read my previous answer ? Ahah

I exactly said you to modify config.txt and I even gave mine to you