Database Develop

[Q] Dell streak 7 Dock USB issue

Well, i just bought a dock for my dell streak 7 running Honeystreak. When i try to connect the USB cable into the back of the dock while the tablet is in place my win7 computer doesn't recognize it at all. The tablet doesn't even show its connected! can someone help please!!?

Are you getting any error message ?
Look in your printer and devices folder, you should see it show up as a media device.

I looked and i didn't see anything... I know the dock has to work because the charging (from charging port not UBS port) and hdmi work.
Sent from my PG86100 using xda app-developers app

Keep in mind, the charging usb port is SEPERATE from the data usb port. I use this dock and I just charge off it, if I want to use data, I use a 2nd cable connecting to it.

I think I tried that. I connect the dock (VIA charging port) then I connect the data cable(VIA mini usb) to the computer. It should charge and connect to the computer but it still doesn't recognize anything. Could it be the rom?
Sent from my PG86100 using xda app-developers app

Well to confirm, can you use a normal cable to connect to your PC? Without the dock that is.
Also as for the rom, Ive used djsteve 2.2.2 and honeystreak, dock works in both. I know on WinXP however I needed to use a diff driver for the MTP Device.

Unfortunately my normal cord died and i coudnt find an original replacement so i got a dock instead. The original cord used to work without trouble though.
Sent from my PG86100 using xda app-developers app

Got a PSP USB cord to plug in? Or try the PS3 controller plug. =p All those could work to test with on the dock.

[Q] USB OTG: usb1 found, cannot use keyboard

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!
Click to expand...
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
Click to expand...
Click to collapse
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
Click to expand...
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

Raspberry pi , Power Supply

I want your experience in psu schematics.This is my plan, I will buy a cheap usb hub,,I will power it with dvd player smps 5V at the same time it will supply parallel to pi micro usb socket.My question is ,Do you cut the upstream power from usb hub when you are connecting the hub? do you left it as it is,,may be a diode is present.

PREMOLIKES said:
I want your experience in psu schematics.This is my plan, I will buy a cheap usb hub,,I will power it with dvd player smps 5V at the same time it will supply parallel to pi micro usb socket.My question is ,Do you cut the upstream power from usb hub when you are connecting the hub? do you left it as it is,,may be a diode is present.
Click to expand...
Click to collapse
While I can't answer specifics on what wires to connect I would recommend taking a look at this great guide to building your own PSU for the RPi http://elinux.org/RPi_5V_PSU_construction. This includes circuit diagram layouts.
Sent from my SCH-I535 using xda premium

I have my Pi powered from one of the normal USB ports. The power comes from the 'power' cable of the USB hard disk that is attached to the Pi. The hard disk's main USB cable is plugged into a powered USB hub.
Attached an image.

Do we need push more mA into her. mines running off my Tab2`s charger at the moment which is 2 Amps..??

lodger said:
Do we need push more mA into her. mines running off my Tab2`s charger at the moment which is 2 Amps..??
Click to expand...
Click to collapse
That should be enough amps as most phone and tablet chargers will provide the 5-5.6V of power needed for the RPi to function properly.
Sent from my SCH-I535 using xda premium

2A will be sufficient to power a couple of peripherils including pi itself.

powered USB hub...
Hey guys, it seems ive got power issues with my pi, everything works fine if i just use the two usb ports, but as soon as i plug in my powered usb hub i get keyboard errors, bluetooth dropping, and wifi connection issues, all symptoms of low power. anyone having this issue with thier Raspi & powered usb hub?

justanotherlurker said:
Hey guys, it seems ive got power issues with my pi, everything works fine if i just use the two usb ports, but as soon as i plug in my powered usb hub i get keyboard errors, bluetooth dropping, and wifi connection issues, all symptoms of low power. anyone having this issue with thier Raspi & powered usb hub?
Click to expand...
Click to collapse
Exactly how do you have everything plugged in?
Assuming power to pi from one source, hub to the USB port and your accessories all to the hub: See if you can get your pi to boot with the hub plugged in to the accessory port but nothing to the power micro USB.
I suspect the hub may be causing issues by backfeeding power through the accessory port. This test will tell.

powered USB hub...
cjdalessio said:
Exactly how do you have everything plugged in?
Assuming power to pi from one source, hub to the USB port and your accessories all to the hub: See if you can get your pi to boot with the hub plugged in to the accessory port but nothing to the power micro USB.
I suspect the hub may be causing issues by backfeeding power through the accessory port. This test will tell.
Click to expand...
Click to collapse
You guessed correctly to how i had it all set up. I did exactly what you said, tried booting, but got nothing. i dont think its backfeeding, any other suggestions? this one leaves me scratching my head.

justanotherlurker said:
You guessed correctly to how i had it all set up. I did exactly what you said, tried booting, but got nothing. i dont think its backfeeding, any other suggestions? this one leaves me scratching my head.
Click to expand...
Click to collapse
Are you using seperate power for usb hub ?If it is so you should cut the power terminal from usb hub to pi.See that you are supplying good current to the hub.

USB Port

Does the USB port have any other function other than power?

Don't think so, only power AFAIK.

I plugged it into my computer and even tried pressing and pressing/holding the button on the Chromecast but my computer didn't indicate any hardware plugged in.
I wonder if the data pins are even wired to anything internally.
UPDATE: The USB cable that comes with it may not work for data transfer, tried it with my phone and it didn't work. So I tried a normal microUSB cable but still nothing.

spunker88 said:
I plugged it into my computer and even tried pressing and pressing/holding the button on the Chromecast but my computer didn't indicate any hardware plugged in.
I wonder if the data pins are even wired to anything internally.
Click to expand...
Click to collapse
If we could plug a mouse or keyboard into it would be great!!

comatose1978 said:
If we could plug a mouse or keyboard into it would be great!!
Click to expand...
Click to collapse
It has bluetooth... so in theory that could be a simple alternative... we just need to figure out how to access hidden menus.

comatose1978 said:
If we could plug a mouse or keyboard into it would be great!!
Click to expand...
Click to collapse
I tried this with a self powered USB OTG cable, just to see if the Chromecast would blink, bing, or do anything to show recognition, no dice. Also tried booting with a USB drive in, no difference.

Universal Charger
Universal Charger:victory:

Examining board
Based on examining the photos of the motherboard on ifixit.com...
Component EM1 appears to be a USB Common Mode Choke. That goes on the D+/D- pair which you can see routed from the USB port, so it wouldn't be present if there wasn't some use for data communication over the USB port. (Cost sensitive equipment.) The flip side of the PCBA shows TP1-TP20 (Where TP19 and TP20 appear to be GND). My guess is in that mix you have a JTAG port for programming/testing the unit initially with a pogo pin rig (evidenced by the dimples observed in each of those locations), and there might be more high/low GPIO pins where one might allow the unit to enter its USB data mode.
-Jon

ften said:
I tried this with a self powered USB OTG cable, just to see if the Chromecast would blink, bing, or do anything to show recognition, no dice. Also tried booting with a USB drive in, no difference.
Click to expand...
Click to collapse
Is there any special kind of powered otg cable to work with this? I looked on Amazon but not sure. I want to grab one incase they make any progress on rooting this.
Sent from my HTCONE using Tapatalk 4 Beta

mustang_52 said:
Is there any special kind of powered otg cable to work with this? I looked on Amazon but not sure. I want to grab one incase they make any progress on rooting this.
Sent from my HTCONE using Tapatalk 4 Beta
Click to expand...
Click to collapse
Looks like its already been rooted. With what looks like a dual usb otg. They don't go deep into what specific cable but, I would guess it is a generic dual usb one off ebay, or amazon, heres a quick one i pulled from amazon http://www.amazon.com/Micro-Cable-P...8&qid=1375052489&sr=8-3&keywords=Dual+Usb+otg
But if you read into it, they say you can root, but unless your a developer you probably wont get any benefit of rooting....yet, if at all.
Obtaining root Link: http://blog.gtvhacker.com/2013/chromecast-exploiting-the-newest-device-by-google/

OneAn9ryN00b said:
Looks like its already been rooted. With what looks like a dual usb otg. They don't go deep into what specific cable but, I would guess it is a generic dual usb one off ebay, or amazon, heres a quick one i pulled from amazon http://www.amazon.com/Micro-Cable-P...8&qid=1375052489&sr=8-3&keywords=Dual+Usb+otg
But if you read into it, they say you can root, but unless your a developer you probably wont get any benefit of rooting....yet, if at all.
Obtaining root Link: http://blog.gtvhacker.com/2013/chromecast-exploiting-the-newest-device-by-google/
Click to expand...
Click to collapse
Please correct me if Im wrong, but the cable you linked only charges the thumbdrive/keyboard/mice/etc NOT the Chromecast so how would one root it since it does need power from usb plug? I've been searching for correct cable and cant find it; link to correct cable would be greatly appreciated!!!
This cable wouldnt work, right? http://www.ebay.com/itm/Usb-type-A-..._USB_Cables_Hubs_Adapters&hash=item4857e3608e

eurominican said:
Please correct me if Im wrong, but the cable you linked only charges the thumbdrive/keyboard/mice/etc NOT the Chromecast so how would one root it since it does need power from usb plug? I've been searching for correct cable and cant find it; link to correct cable would be greatly appreciated!!!
This cable wouldnt work, right? http://www.ebay.com/itm/Usb-type-A-..._USB_Cables_Hubs_Adapters&hash=item4857e3608e
Click to expand...
Click to collapse
I own that cable from Amazon and it should work. It brings in +5v from a charger connected to the female microUSB port and then splits it to the female full size USB port and the the male microUSB port so both the USB host device and the USB peripheral device are getting power.

spunker88 said:
I own that cable from Amazon and it should work. It brings in +5v from a charger connected to the female microUSB port and then splits it to the female full size USB port and the the male microUSB port so both the USB host device and the USB peripheral device are getting power.
Click to expand...
Click to collapse
I ordered this cable http://r.ebay.com/QgwBIW Will report back if it works when I get it.

eurominican said:
Please correct me if Im wrong, but the cable you linked only charges the thumbdrive/keyboard/mice/etc NOT the Chromecast so how would one root it since it does need power from usb plug? I've been searching for correct cable and cant find it; link to correct cable would be greatly appreciated!!!
Click to expand...
Click to collapse
I also bought that powered OTG cable off Amazon and it will power the Chromecast as well as provide the means to flash the Chromecast via a USB thumbdrive. When you apply power to the Chromecast, it automatically flashed the bin from the USB drive. There was no interaction required (or even possible). Of course this was on the original firmware - if your Chromecast updated itself, you have lost the ability to root the device at this time.
Clearly the Chromecast does sense the USB drive and pulls data from it during the initial boot sequence. However I'm not sure if it would ever work for other devices such as keyboards or storage devices, etc.
I'm not sure why anyone would want to hook those types of devices up to the Chromecast however. Once you have root, you can telnet into the device, so adding a keyboard doesn't seem that important. The whole idea of the device is that you send it media from other devices and control it via that other device. Adding storage for example doesn't seem important since it can pull media off the network already (ie a NAS or another computer).
Anyway. That has been my experience with it so far. It's a long winded answer to more than just your question about the OTG plug.

I would personally love the ability to send audio out without having an hdmi TV be on through the usb somehow...
Sent from my Nexus 7 using Tapatalk 4

USB Tethering not working - SGH-i997
Hi all,
i have install Avatar 7.0 to my Samsung SGH-i997 from "http://forum.xda-developers.com/showthread.php?t=2174227". it's look cool.
But when i am trying to USB Tethering, the massage shows as "Unfortunately,Setting has Stopped".
how to Fix this issue.

Help with Smart Dock

i was using the Smart Dock, for about 6 months, and it was running perfect, i saw movies, and play games (emus, and android games) using a ps3 controller wired, on the Dock´s USB, and every time work perfectly.
But suddenly, it stop working, now its dificult to connect, i connect it, and in the phone screen appears the "HDMI cable connected", but after a few seconds appears "HDMI cable disconnected", and then, the message appears one after one,
and when it work, the screen mirroring runs well, but when i connect a mouse (wired) dont work, neither the ps3 controller or a pendrive, the USB Host of the Dock is not working,
I try using a USB OTG, and connect both mouse and ps3 controller, and both work well, but not in the Dock
anny suggestions?
Sorry for the long post

You probably are, but just in case, I'll ask anyway..... Are you using a powerful enough charger (1.8-2.0 maH output) .... e.g-the one that came with the note 2? And are the cables snugly snapped into place and not loosely connected?
Sent from my SPH-L900 using xda premium

omar_alex01 said:
i was using the Smart Dock, for about 6 months, and it was running perfect, i saw movies, and play games (emus, and android games) using a ps3 controller wired, on the Dock´s USB, and every time work perfectly.
But suddenly, it stop working, now its dificult to connect, i connect it, and in the phone screen appears the "HDMI cable connected", but after a few seconds appears "HDMI cable disconnected", and then, the message appears one after one,
and when it work, the screen mirroring runs well, but when i connect a mouse (wired) dont work, neither the ps3 controller or a pendrive, the USB Host of the Dock is not working,
I try using a USB OTG, and connect both mouse and ps3 controller, and both work well, but not in the Dock
anny suggestions?
Sorry for the long post
Click to expand...
Click to collapse
I have this problem too!! none of the USB ports are functioning, however USB accessories all work with my Note 2 via OTG cable (I tried connecting the OTG cable to the Smart Dock too and this didn't work either)

djbenetti said:
I have this problem too!! none of the USB ports are functioning, however USB accessories all work with my Note 2 via OTG cable (I tried connecting the OTG cable to the Smart Dock too and this didn't work either)
Click to expand...
Click to collapse
I have exactly the same problem with all 3 USB ports. HDMI works fine. Is there any special setting or my dock is faulty?

I think they must be faulty, either the unit itself or possibly the charger, or the charger for some reason is not strong enough to power the USB ports (although that seems strange as everything is official Samsung product, and I've tried using my phone power adapter too which ostensibly is the same)

Yes the charger in the dock is 100% the same with the one in the phone packaging. I tried to power the dock through my laptop without any success. Unfortunately, there is not powered problem.