[Q] Homemade TV-Out Cable? - Galaxy S II Q&A, Help & Troubleshooting

Well I've wanted to make a TV-Out cable for a while. How would I go about doing that? I have a 3.5mm headphone jack, an av cord, and everything else i would probably need.
Could someone tell me which wires go where? Ex, normally right earphone wire would be video, left earphone sound, etc... If someone could give me a diagram, that'd be amazing.
Also, does TV-Out give Mono sound, or stereo? Thanks.

You probably need to search online for schematics for an MHL adapter, as this is what the Galaxy SII uses. There is a switch behind the USB port that determines what is plugged into the port, and changes the port function appropriately.
MHL will output a digital signal, so if you hope to hook this up to a TV that doesn't have HDMI, you will also need a Digital-to-Analog Converter (DAC) in whatever Frankenstein contraption you are attempting to build.
It's probably easier to just pay the $15-20 to buy a ready-made MHL adapter.
EDIT: sounds like you expect the headphone jack to output video. It doesn't.

ctomgee said:
You probably need to search online for schematics for an MHL adapter, as this is what the Galaxy SII uses. There is a switch behind the USB port that determines what is plugged into the port, and changes the port function appropriately.
MHL will output a digital signal, so if you hope to hook this up to a TV that doesn't have HDMI, you will also need a Digital-to-Analog Converter (DAC) in whatever Frankenstein contraption you are attempting to build.
It's probably easier to just pay the $15-20 to buy a ready-made MHL adapter.
EDIT: sounds like you expect the headphone jack to output video. It doesn't.
Click to expand...
Click to collapse
LOL oh what, really? I swear I saw on a thread a while back that it kinda worked as an output. Well this is depressing. ;( Guess I'll be either buying one, or tearing apart a spare micro-usb charger i have laying around. Thanks for the help.

Gutana said:
LOL oh what, really? I swear I saw on a thread a while back that it kinda worked as an output. Well this is depressing. ;( Guess I'll be either buying one, or tearing apart a spare micro-usb charger i have laying around. Thanks for the help.
Click to expand...
Click to collapse
The original Galaxy S did analog video output through the headphone jack. The Galaxy S II does HDMI through a MHL adapter and the USB port. (I rather liked the old system myself as I could plug my phone into old TVs... no more!)

redct said:
The original Galaxy S did analog video output through the headphone jack. The Galaxy S II does HDMI through a MHL adapter and the USB port. (I rather liked the old system myself as I could plug my phone into old TVs... no more!)
Click to expand...
Click to collapse
Ah, that's probably where I heard it, I had a vibrant a few months ago.
I'd love it if you had the option to use either the Analog, or HDMI. That'd be great.

Gutana said:
Ah, that's probably where I heard it, I had a vibrant a few months ago.
I'd love it if you had the option to use either the Analog, or HDMI. That'd be great.
Click to expand...
Click to collapse
Too bad it doesn't have the hardware for it to happen.

Related

HDMI to DVI or Component

I have an old HDTV that only has DVI and component in. Anyone know of a cable or converter that might work with the HDMI from the Dock? I won't be getting a new TV until next year some time, but I would like to use my tablet with the dock and bigscreen.
WantADroid said:
I have an old HDTV that only has DVI and component in. Anyone know of a cable or converter that might work with the HDMI from the Dock? I won't be getting a new TV until next year some time, but I would like to use my tablet with the dock and bigscreen.
Click to expand...
Click to collapse
Yeah you can find a DVI-HDMI cable easily. I used one from my PC (DVI) to my 42" (HDMI). You should be fine if you just find a cable like I used (which was nice that it was cheaper for me than an actual HDMI/HDMI cable and then using a DVI/HDMI adapter).
http://www.monoprice.com/products/p...=10231&cs_id=1023102&p_id=2284&seq=1&format=2
There you go.
Thanks
Thanks for the replies... I am looking for something that will also push audio from the HDMI. I may need to purchase a converter, but I don't want to pay that much if it won't work. I wish the G tab dock had connections like my old archos dock has. Svideo, component, and composite, no HDMI but I didn't need it at the time with my old device.
I know "Buy a new TV"...
WantADroid said:
Thanks for the replies... I am looking for something that will also push audio from the HDMI. I may need to purchase a converter, but I don't want to pay that much if it won't work. I wish the G tab dock had connections like my old archos dock has. Svideo, component, and composite, no HDMI but I didn't need it at the time with my old device.
I know "Buy a new TV"...
Click to expand...
Click to collapse
Is the audio jack on the tab disabled when using the HDMI out? If not, then you can use a 3.5mm to stereo cable to run the audio.
I'm not aware of anyway to adapt out the HDMI audio to an analog equivalent. HDMI audio is digital, so there would have to be some active conversion going on, which means an expensive adapter.
rothnic said:
Is the audio jack on the tab disabled when using the HDMI out? If not, then you can use a 3.5mm to stereo cable to run the audio.
I'm not aware of anyway to adapt out the HDMI audio to an analog equivalent. HDMI audio is digital, so there would have to be some active conversion going on, which means an expensive adapter.
Click to expand...
Click to collapse
Not sure if audio is disabled when Dock is used(haven't recieved mine yet, I got in on rebate) was hoping to get a jump on what I would need to use my G Tab with my bigscreen.
I know about Digital to analog issue but I have read that some devices will work with a fairly inexpensive adapter. I may be the guinea pig on this... I have found full converters that start from $150.00+. I guess I will wait and see if anyone has already gone down the road I face.
Thanks.
HKChad said:
http://www.monoprice.com/products/p...=10231&cs_id=1023102&p_id=2284&seq=1&format=2
There you go.
Click to expand...
Click to collapse
Or rather than a complete cable, just switch right at the TV set with this:
http://www.cablestogo.com/product.asp?cat_id=110&sku=40367

[Q] RCA out Cables?

Now that an HDMI cable seem to have successfully built anyone think an RCA out cable is possible?
I have one for my iPhone and find it very convenient when traveling since more hotel TVs will have RCA connectors but no HDMI.
I'm not sure about the technical problems of resolution coming out of the dock connector but...just a thought. Would also be great if it did not need power.
Thanks.
That's not a big problem. Just need a consumer group. Don;t know how many guys interest in it. +1
xjarl said:
That's not a big problem. Just need a consumer group. Don;t know how many guys interest in it. +1
Click to expand...
Click to collapse
I'd probably be down for one, as long as it's not super expensive.
xjarl said:
That's not a big problem. Just need a consumer group. Don;t know how many guys interest in it. +1
Click to expand...
Click to collapse
Sweet, so how do we go about it?
I'm definitely interested
I believe that HDMI is digital output, RCA jack is analog. Only DVI has digital & analog output.
You would have to get a converter such as this ....
http://www.amazon.com/HDMI-Composite-S-Video-Converter-Adapter/dp/B0047PDBP0
rwstarke said:
I believe that HDMI is digital output, RCA jack is analog. Only DVI has digital & analog output.
You would have to get a converter such as this ....
http://www.amazon.com/HDMI-Composite-S-Video-Converter-Adapter/dp/B0047PDBP0
Click to expand...
Click to collapse
That was one of my concerns. I am really not sure what kind of outputs the dock connector has.
Im in same boat as you.
The dock for the gtab is HDMI output
Where I would actually want to hook my phone/tablet to a tv I need to use a rca composite plug.
You need to buy a hdmi to composite converter and best I can find so far is $50 on ebay for one.
The dock for the gtab is HDMI output
jacobbones said:
Im in same boat as you.
The dock for the gtab is HDMI output
Where I would actually want to hook my phone/tablet to a tv I need to use a rca composite plug.
You need to buy a hdmi to composite converter and best I can find so far is $50 on ebay for one.
The dock for the gtab is HDMI output
Click to expand...
Click to collapse
I have a dock but it's a PITA to take with you, need the dock + the power cable.
I have an RCA cable for my iPhone and it works great.
Getting an adapter would not really work well...too expensive.
pgonza02 said:
I have a dock but it's a PITA to take with you, need the dock + the power cable.
I have an RCA cable for my iPhone and it works great.
Getting an adapter would not really work well...too expensive.
Click to expand...
Click to collapse
Is the iphnoe hdmi out?
Both my droid x2 and gtab are hdmi out .
They are digital signals so you need a convert box to turn digital to analog
jacobbones said:
Is the iphnoe hdmi out?
Both my droid x2 and gtab are hdmi out .
They are digital signals so you need a convert box to turn digital to analog
Click to expand...
Click to collapse
No, it's not. The cable is direct out of the connectors. I don't think the iPhone can send out HD signals, but not sure about it.
This is not the exact same cable, but it's almost identical:
http://cgi.ebay.com/AV-TV-RCA-USB-A...ccessories&hash=item1e5f7dfdbb#ht_1925wt_1139
pgonza02 said:
No, it's not. The cable is direct out of the connectors. I don't think the iPhone can send out HD signals, but not sure about it.
This is not the exact same cable, but it's almost identical:
http://cgi.ebay.com/AV-TV-RCA-USB-A...ccessories&hash=item1e5f7dfdbb#ht_1925wt_1139
Click to expand...
Click to collapse
But with the gtab you need to connect it to the dock in order to hook it up to a tv.
The docks output is a HDMI cable, which is a digital signal. Doesnt mean its HD its just digital. The Rca plugs are for an analog signal. You need to convert the digital to analog and a cable alone wont do it even if its hdmi on one end and rca on the other it wont work.
That cable may work for you on the iphone but this is a different setup
jacobbones said:
But with the gtab you need to connect it to the dock in order to hook it up to a tv.
The docks output is a HDMI cable, which is a digital signal. Doesnt mean its HD its just digital. The Rca plugs are for an analog signal. You need to convert the digital to analog and a cable alone wont do it even if its hdmi on one end and rca on the other it wont work.
That cable may work for you on the iphone but this is a different setup
Click to expand...
Click to collapse
I completely understand that. I am just not sure of what the pin-out on the dock connector puts out. I don't know if there is analog video out also.
pgonza02 said:
I completely understand that. I am just not sure of what the pin-out on the dock connector puts out. I don't know if there is analog video out also.
Click to expand...
Click to collapse
Tegra2 doesn't supply analog, so I highly doubt it has analog out.
How many guys interest in 30pin--R.G.B cable? sample developing now...
xjarl said:
How many guys interest in 30pin--R.G.B cable? sample developing now...
Click to expand...
Click to collapse
Interested.
Thanks.
If it costs less than the $50 for the conversion box I would be innterested
Need a 5V power supply. Its shape needs to be redesigned to include a mini AC adapter...
RCA, RGB, HDMI Cable... Which one would you like better??
RCA
Tv I would use it is old rca (red,white, yellow)connector type

HDMI out of MHL adapter to Composite RCA video. Will this work?

I need to be able to connect my Galaxy S2 through a rca video input. In order to do this I need to:
1) Get an MHL adapter: http://www.amazon.com/gp/product/B005NTHXYY
2) Use a hdmi to rca converter like: http://www.amazon.com/gp/product/B0047PDBP0
In theory this should work. What do you think? Any issues you see?
In theory, maybe. Let us know if you try it out. Also, as this is accessory related it should not have been put in General.
Sorry, wasnt sure about the right category.
Probably, but the resolution will suck.
I know... its just for displaying the content on an in dash double din radio that has an lcd so i can see larger screen in a more convenient location for things like navigation and song information. Unfortunately almost, if not all, car stereos have rca input an not hdmi.
Oh in your car... then you're going to need a 9v adapter... or an inverter, but then it gets clunky.
penguinlogik said:
Oh in your car... then you're going to need a 9v adapter... or an inverter, but then it gets clunky.
Click to expand...
Click to collapse
The head unit has a usb input. I am hoping it will be able to give power to the MHL adapter.
Need it for the hdmi to rca box.
this might be unrelated or something you already know, but my Alpine stereo with USB wont read any Android device, not even for music or videos. I'm about to change to a similar Pioneer model, so I can't say on that. I'm not sure you can just run Android on the 7" LCD if that's what you're trying to do.
The usb is power for the mhl adapter
penguinlogik said:
The usb is power for the mhl adapter
Click to expand...
Click to collapse
...and then what? hdmi to a laptop in the passenger seat? ;p
To a rca adapter that is listed in the first post...
penguinlogik said:
To a rca adapter that is listed in the first post...
Click to expand...
Click to collapse
I am saying that I don't know where the rca is plugging in. i don't believe the car stereo is going to work with any plug combination.
I want to know if it works, so give us an update. I thought bluetooth was the only connection for cars.
This is for a double din headunit that had a screen and aux video input.
brent8577 said:
I am saying that I don't know where the rca is plugging in. i don't believe the car stereo is going to work with any plug combination.
Click to expand...
Click to collapse
Why wouldn't it work? My old stereo had RCA inputs and i used to hook my ipod up to it all the time. This is just adding a step (the hdmi -> RCA converter).
Should work...
I do think that once you find a way to power the HDMI -> RCA converter, you should be fine. You might want to take the one step first to see if your stereo's USB power will power the MHL adapter by connecting it to an HDMI TV if you can.
Personally, I do not know why there are not more auto options that have HDMI input yet. I wold love to be able to put my video on a screen for my passengers, but going all the way down to RCA seems really silly when it should not be hard to have an HDIMI monitor for the car, but I have really only seen a handful, and most of those are really for video camera applications and thus over-priced.
Matt112211 said:
I do think that once you find a way to power the HDMI -> RCA converter, you should be fine. You might want to take the one step first to see if your stereo's USB power will power the MHL adapter by connecting it to an HDMI TV if you can.
Personally, I do not know why there are not more auto options that have HDMI input yet. I wold love to be able to put my video on a screen for my passengers, but going all the way down to RCA seems really silly when it should not be hard to have an HDIMI monitor for the car, but I have really only seen a handful, and most of those are really for video camera applications and thus over-priced.
Click to expand...
Click to collapse
As a motorcyclist who's already tired of inattentive drivers trying to kill me on a daily basis, I'm glad there's not more options.
updates
Hi,
Any updates on how to resolve the RCA problem?
Regards
Esso
Miami_Son said:
As a motorcyclist who's already tired of inattentive drivers trying to kill me on a daily basis, I'm glad there's not more options.
Click to expand...
Click to collapse
As a car driver, I hate motorcyclists because they drive like they are invincible.

Possible to output analog signal over HDMI? For heads up display

Hi all,
I'm constructing a heads up display using a pair of MyVu Crystals I have laying around. My problem is that I've only got an iPod connector cable and a standard RCA red, white, and yellow connector. There are HDMI to RCA cables on ebay but in order to use them without a converter, the signal over the HDMI port has to be analog.
Before I buy one, can anyone tell me if the HDMI port on the Photon is capable of outputting such a signal?
Many thanks!
DestroyerMTL said:
Hi all,
I'm constructing a heads up display using a pair of MyVu Crystals I have laying around. My problem is that I've only got an iPod connector cable and a standard RCA red, white, and yellow connector. There are HDMI to RCA cables on ebay but in order to use them without a converter, the signal over the HDMI port has to be analog.
Before I buy one, can anyone tell me if the HDMI port on the Photon is capable of outputting such a signal?
Many thanks!
Click to expand...
Click to collapse
HDMI to RCA cable will not work. I have tried it. I have also tried 3.5mm to RCA. My phone didnt like that and kept pulling up voice command. No display or sound at all on the tv I was trying to use.
Motorola sells an adapter (Motorla VGA Adapter $49.99) for the photon that plugs into the usb port and hdmi port simultaneously and it is says it converts HDMI to VGA to allow connection to projectors and older tv's. VGA is analog and the adapter requires no other power source. Should work if you went: MyVu>Ipod Cable>RCA TO VGA>MOTOROLA VGA ADAPTER>PHOTON.
Brilliant, I'll check that out and post the results later!
Many thanks.
I've also found this:
http://cgi.ebay.com/ws/eBayISAPI.dl...sPageName=VIP:watchlink:top:en#ht_3029wt_1180
Think that might work? It's a fair bit cheaper than Moto's option. I just wonder about power as presumably that's what the usb port on the moto adaptor is for. On second thought, the Moto adaptor launches webtop which is likely what the USB is for. I'm thinking this HDMI one could work then? All I'm after is mirroring (largely for GPS nav).
DestroyerMTL said:
I've also found this:
Think that might work? It's a fair bit cheaper than Moto's option. I just wonder about power as presumably that's what the usb port on the moto adaptor is for. On second thought, the Moto adaptor launches webtop which is likely what the USB is for. I'm thinking this HDMI one could work then? All I'm after is mirroring (largely for GPS nav).
Click to expand...
Click to collapse
Wow, awesome find! Only problem I can see is that you will need an micro hdmi to hdmi for it to fit the photon. You cant plug in the adapter and the access the usb port without muscling it. Might loosen up the sockets and thats no good. This one is better:
cant post link just search micro hdmi male to vga and youll find one same price range
Already has a micro hdmi end , no power supply required either. I am going to purchase this and try it out, I want to mirror my display on my 7 inch car stereo. Torque, netflix & Google navigation is going to look sick. There is no sound from this but you can run 3.5mm jack out.
Good one, didn't think to look for a micro ended one as I've already got an adaptor. I may go that way as well.
I'll make sure to pop a post up with my badass GPS driving microdisplay.
Ok, I ordered mine last night... sucks its coming from Hong Kong but Ill post up a video once I get it installed!
got the adapter.. hooked it up to a vga to rca out cable and plugged into an analog tv and got a flicker every now and then but no picture. Connected it to the Analog input on my LG 55inch LED and I get a scrolling picture in black and white only. Will try a couple different cables, the rca cable on the adapter looks like it might also take a 3.5mm jack also has a svideo out, havent tried to hook up to car yet but will and will report back.
Shawnd5th said:
got the adapter.. hooked it up to a vga to rca out cable and plugged into an analog tv and got a flicker every now and then but no picture. Connected it to the Analog input on my LG 55inch LED and I get a scrolling picture in black and white only. Will try a couple different cables, the rca cable on the adapter looks like it might also take a 3.5mm jack also has a svideo out, havent tried to hook up to car yet but will and will report back.
Click to expand...
Click to collapse
That's a plus, sounds like u got signal but not all the pins are feeding through.
Sent from my MB855 using XDA
Got my micro HDMI to VGA adaptor from Hong Kong today. Works perfectly!
I'm still waiting on the VGA to S-Video/RCA so will report back.
Maybe you've got a problem with an unsupported resolution? RCA can only go up to 640x480 right? Is there any way we can force the mirroring resolution to go lower?
Yes, Mirror resolution.apk and some modding. Look in Hybrid rom thread, there is link for that.
Thanks mate.
I'll give it a go and report back. I got my VGA to RCA converter and like the other poster have no picture. Will report back after using the resolution fix.
Cheers.

MHL to analog audio adapter

Does anyone have any experience with a MHL adapter that will charge your phone and also provide analog audio? I would like to make my own car dock with one.
The "iKross MHL micro-USB to VGA Display and Stereo Audio Adapter" on amazon is pretty much what I need, but am unsure if it will work with the EVO LTE.
It's really unfortunate Sprint/HTC opted to get rid of the charging/audio pins on the back of the ONE X when designing the EVO.
you can still use the 3.5mm headphone jack as an audio out even with the MHL streaming out via HDMI. It tried it with my headset and my monitor. Works great
abbazaba said:
The "iKross MHL micro-USB to VGA Display and Stereo Audio Adapter" on amazon is pretty much what I need, but am unsure if it will work with the EVO LTE.
Click to expand...
Click to collapse
I've been looking for a similar solution. I'd wager that the adapter you mentioned is compatible. MHL is a standard and I'd very be surprised if the GNexus (as listed on the product page) worked, but the EvoLTE didn't.
I have an aux jack and charging port in my glove box, and for years I've just been using both USB and audio cables which dangle out of the box. I don't think I need a car dock (my car already has GPS), but just having one less cable (like those old iPod car adapters which split out analog audio) will be quite nice.
If you're nervous about buying it, I expect I'll pull the trigger on this in the next week or so, and I can report back.
I'd like to find a black or gray version, though. White cables are garish.
Exactly. I never bother with my phone because of all the wires being a hassle. Just looking for a more elegant/convenient solution I can just set my phone in. Might try to hack the MHL adapter and HTC car dock together, though I wish the car dock wasn't so unnecessarily bulky.
Just picked up the belkin Bluetooth today and hooked it to RCA inputs. Got an app that connects Bluetooth when the power cable is connected and turns it of when its not.works great So far. So now I'm down to just power cable .
Sent from my EVO using xda premium
Would this work?
http://forum.xda-developers.com/showthread.php?t=1321491
Or a generic micro-usb to 3.5mm adapter with a micro-usb Y?
http://www.amazon.com/Samsung-ET-AUF3SBEBXAR-Female-Headset-Adapter/dp/tech-data/B003XT1UA4
http://www.amazon.com/Naztech-Micro-Charging-Splitter-Cable/dp/B004DI7EIQ
What do you mean by this:
It's really unfortunate Sprint/HTC opted to get rid of the charging/audio pins on the back of the ONE X when designing the EVO.
Click to expand...
Click to collapse
Thanks!
has anyone tried this yet? I'd be interested in its compatibility with the car dock as well as how the quality is. With the car dock and the headphone jack I'm getting lots of feedback and static.
I've order the iKross MHL adapter and the parts necessary to assemble the custom cable. I will report back if the iKross adapter works. If it does work, I may not assemble the custom cable. If the iKross adapter does not work, I will assemble the custom cable and post results.
The iKross MHL adapter came in today, and it does work on the Evo 4G LTE. However, the sound is so terrible that I cannot recommend it to anyone for this application, and I will be sending the adapter back. It seems to only pass low frequencies to the 3.5mm jack, so much of the audio signal is lost. The audio is very low quality compared to the built-in 3.5mm jack. I will be trying the custom cable now, once I get all of the parts I need.

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