I'm thinking about using an Amazon Fire 7 inch tablet as a car radio dashboard install, but before I commit to buying one, I can't seem to find any conclusive answers on a few things.
Firstly, does the fire output USB audio so I can use a USB dac?
And if so, is it possible to use a Y split cable for USB audio and charging at the same time?
Any info would be greatly appreciated.
kcajjones said:
I'm thinking about using an Amazon Fire 7 inch tablet as a car radio dashboard install, but before I commit to buying one, I can't seem to find any conclusive answers on a few things.
Firstly, does the fire output USB audio so I can use a USB dac?
And if so, is it possible to use a Y split cable for USB audio and charging at the same time?
Any info would be greatly appreciated.
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Click to collapse
I can confidently say this Fire like most other Amazon devices will not support charging while the USB port is being used for any other function. Can't speak to USB audio out (suspect not) as most go with Bluetooth.
Davey126 said:
I can confidently say this Fire like most other Amazon devices will not support charging while the USB port is being used for any other function. Can't speak to USB audio out (suspect not) out as most go with Bluetooth.
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It does seem to be a difficult feature to find on Android tablets.
According to Wikipedia, it's a simple implementation of a USB otg cable that should allow charging on any usb otg device.
USB Otg Wiki
The major problem (presuming the cable does work and usb audio is possible) is that the kernel needs to be able to enable USB otg at the same time as charging.
kcajjones said:
It does seem to be a difficult feature to find on Android tablets.
According to Wikipedia, it's a simple implementation of a USB otg cable that should allow charging on any usb otg device.
USB Otg Wiki
The major problem (presuming the cable does work and usb audio is possible) is that the kernel needs to be able to enable USB otg at the same time as charging.
Click to expand...
Click to collapse
Yep. The stock kernel on most consumer devices don't have robust OTG support as the most commonly used gizmo is a flash drive. I was able to get a OTG GPS receiver to work but it wasn't plug-n-play by any means. Charging didn't work in that context...although I didn't fiddle with it much.
I've been working on a kinda similar project, I just haven't had time. I'm trying to use my fire as an octoprint server, which is a program that monitors and controls 3d printers. The problem is that it requires usb to be connected to the printer, while also staying powered on. What I'm going to try is remove the battery, step down 12v from the printer to 3.7v and just hack it onto where the battery would connect to the pcb. I'm not sure what the different pins on the battery connector are though, so I'll have to test those. Otherwise, it should work.
Related
Hi guys,
been a passive viewer in the xda forums for a long time but never posted anything, so be easy on me - It's my first.
I would like to connect my galaxy s i9000 to the pc screen.
I know there's the TV out option, but it involves a 3.5" to RCA cable, and pc screens don't have RCA jacks.
Does anyone know of a way to do this? and if you know what kind of cable is required that will be great.
I'm using the CM9 rom, build 17 from theam hacksung.
Just to clarify, I want to connect to phone to the PC so I can view the phone on the PC screen.
Thanks in advance
Short answer is you can't.
Longer answer is you might.
Your monitor doesn't have RCA connectors but if you have a tuner installed inside your PC, you might be able to connect it to that and then use the software that came with the tuner to display it onto your monitor.
Another method would be to use a RCA to whatever input your display has converter but they are are usually pricey and after a search for RCA to HDMI/VGA/DVI I don't think they really exist.
Even if there was a 3.5mm to HDMI/VGA/DVI cable, it wouldn't work unless the display was designed to take a PAL or NTSC signal through those types of connections.
With cm9, you need to have 3.5mm to RCA cable plugged in then go into System Settings>Advanced>TV Out. The option is greyed out when no 3.5mm to RCA cable is plugged in and the option has to be checked every time you plug the cable in.
Thanks for the reply,
I knew about the tv-out option, but didn't think about using a tuner - that might work!
Another question, do you think that a micro usb - hdmi cable might work?
I saw a while back that samsung offered such a cable that was designed for that purpose exactly.
I've searched a lot of forums but havn't got a clear answer if this actually works, not have I seen a youtube video demonstrating this.
Does anyone know if using a micro usb - hdmi cable wokrs?
jons753 said:
I knew about the tv-out option, but didn't think about using a tuner - that might work!
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Do you know what tuner you have? I'm not sure if yours will have it but there will be a yellow plug like the ones you find on a TV.
I'm %99.9 sure that the I9000 doesn't have HDMI out through USB. It would seem a bit excessive to have two video out ports. Although you did spark an interesting subject, if someone could whip together drivers to work with something like this we could potentially have HDMI through USB but I don't see it happening any time soon.
Here's another way to view your phone through your PC: http://mymobiler.com/
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
ssabino said:
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
Click to expand...
Click to collapse
This is very possible with USB host and OTG Y-cable adapters. When my cables and my computer come in the mail I will try tinkering with it. It'd be nice to see Jack audio running on here. Once July rolls around and HP releases most of their driver and kernel sources, development in all areas will skyrocket for our Touchpads.
Sent from my Galaxy Nexus using Tapatalk 2
Does the upstream port require power even if the device I'm using has its own power? My E17 has its own battery, but for some reason it isn't even recognized through the USB OTG cable. I can't even get USB audio to work on the WebOS side, which supposedly has full USB audio support via pulse audio now...
Sean
ssabino said:
Does the upstream port require power even if the device I'm using has its own power? My E17 has its own battery, but for some reason it isn't even recognized through the USB OTG cable. I can't even get USB audio to work on the WebOS side, which supposedly has full USB audio support via pulse audio now...
Sean
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Click to collapse
Hmm, I'm not sure. If it has it's own power supply, maybe you can try to mount it with a standard male microUSB to female USB. I'm about to see if I can get my external HDD with it's own power supply to mount to my phone and tablet. Will report back with results.
---------- Post added at 12:57 PM ---------- Previous post was at 12:46 PM ----------
Yeah, no go on mount :/
ssabino said:
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
Click to expand...
Click to collapse
Has there been anymore dev on this topic, including the current CM mods? This would make an interesting project for a carputer if the USB audio works.
Hello,
I have a USB OTG cable and dell keyboard that I have tested and work in OTG mode on a Nexus 7, however i cannot get them to function with my HP Touchpad 32gb, running CM9 2.6.35, built on Sun Oct 28.
The device recognizes when I plug in anything via USB, but only as a generic Linux USB hub, and not as any particular device. Are there any steps to take to debug this? Has anyone had experience with this type of an issue?
Thanks for your help,
Cory
I don't know if this is the issue, but I know the touchpad doesn't support OTG like the the Nexus does. I think you need a Y-adapter + OTG to provide power since the micro usb port doesn't give any power to the device you connect. Someone correct me if I'm wrong though.
Apparently even a powered USB requires a powered Y cable to be properly recognized. I hacked together a quick Y cable manually, by splicing in another USB cable's power and ground (Red and black) to the respective locations on a female USB cable. Works as expected.
I am now communicating with an Arduino over Serial
Thanks!
Read this thread, should give you all the info you need:
http://forum.xda-developers.com/showthread.php?t=1582771
Basically the Touchpad has OTG but it provides no power.
wcdolphin said:
Apparently even a powered USB requires a powered Y cable to be properly recognized. I hacked together a quick Y cable manually, by splicing in another USB cable's power and ground (Red and black) to the respective locations on a female USB cable. Works as expected.
I am now communicating with an Arduino over Serial
Thanks!
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Click to collapse
I'm curious if you are able to charge with this cable hack while using usb devices?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
ZedZardoz said:
I'm curious if you are able to charge with this cable hack while using usb devices?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
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if so , he is the first of the many many many who has used this cable..HPTP just is not set up for charge + usb data at the same time
amkaos said:
if so , he is the first of the many many many who has used this cable..HPTP just is not set up for charge + usb data at the same time
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Click to collapse
Agreed. I think people just are not stating reality regarding the ability to charge and use OTG Hosting to USB devices at the same time.
My goal here has been to attach a flash drive with video/audio media and play & charge on long flights. It looks like play, charge are mutually exclusive on my beloved TouchPad.
I've asked for the specific confirmation of this from this YouTube but have never had the poster reply:
https://www.youtube.com/watch?v=p10LgZFIawo&feature=BFa&list=PLCED27D4A23068E04&index=7
There are devices out there that have very advanced micro USB device implementations. Sadly the HP is only superficially supportive.
I for one cannot wait to get my SGN2 smart dock which offers:
Charging
OTG (x3 USB)
Audio out
HML HDMI out
Docked Profile
Not sure if this has already been discussed/discovered, but will it be possible to use the new Nexus dock "and" an OTG cable at the same time? It seems feasible given that the dock charges the device using the pin connectors which frees up the USB port.
One possible problem is that the dock also acts as a passthrough for data/audio so there may be a problem with the tablet trying to reconcile both sources trying to have simultaneous access.
I ask because it would be nice to be able to charge my Nexus 7 and utilize an OTG cable (for storage drives and game controllers) at the same time. I know there is an OTG Y-cable solution, but that involves rooting the tablet.
Has anyone already explored the possibilities of this combination?
Xenoterran said:
Not sure if this has already been discussed/discovered, but will it be possible to use the new Nexus dock "and" an OTG cable at the same time? It seems feasible given that the dock charges the device using the pin connectors which frees up the USB port.
One possible problem is that the dock also acts as a passthrough for data/audio so there may be a problem with the tablet trying to reconcile both sources trying to have simultaneous access.
I ask because it would be nice to be able to charge my Nexus 7 and utilize an OTG cable (for storage drives and game controllers) at the same time. I know there is an OTG Y-cable solution, but that involves rooting the tablet.
Has anyone already explored the possibilities of this combination?
Click to expand...
Click to collapse
I read somewhere else that while docked, the device doesn't react to an OTG cable. This is just what I've heard, haven't seen it confirmed.
This guy did something similar, and the results are evident: Dock point is useless! Charge and OTG can not be carried out simultaneously!
Would be nice to know, if Timurs kernel, which allows charging and multiple USB would solve this. Have no dock, so I can not check. What I would like to have is something like the magnetic pogo charger which is annonced for Nexus 10.
For the audiophiles among you, I confirm that the Tab S 8.4 is USB audio capable. My HRT microstreamer USB DAC works perfectly.
What about analog usb audio is that supported too?
Sent from my GT-N7105 using Tapatalk
Andriod is getting really good support with usb OTG
my amazon.com/dp/B000KW2YEI/ref=pe_385040_30332190_TE_dp_1 Behringer UCA202 Audio Interface Works with both the tab s 8.4 and my s5
also my PS3 controller works via usb otg
USB hubs work as well; now I just need a way to charge the tablet while using usb otg
That is what I am looking after to.
If I only could get my eyes on a service manual I will find a way to charge while OTG is enabled.
zeb crs said:
That is what I am looking after to.
If I only could get my eyes on a service manual I will find a way to charge while OTG is enabled.
Click to expand...
Click to collapse
There are many Y cables on eBay that allow charging and otg use at the same time. I find it's a bit hit and miss, as some don't work while others do
We might find some info on this in the kernel source as well.
The table for USB Id should say the resistor value needed for the combination that gives charging and USB OTG at the same time.
I'll see if I can find out which module in the kernel that does USB ID sensing.