Database Develop

Connecting phone to PC via USB cable *without* charging?

Hi all - does anyone know if it's possible to connect the N1 to a PC (to do adb, shell etc) without charging the battery? Reason for question is, I am trying to do some kernel/configuration benchmarking and do not wish to skew the battery usage/uptime figures too much! (fairly theorhetical question, I guess, as I realise accessing the N1 via USB could itself use battery)

I don't believe there is a way to do that. the only way I could think of is to get a usb that can only transfer data and not a charge for the battery.

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Cut up your USB cable and clip the wire attached to pin 1.
Caveat: I haven't tried this but it's certainly possible.

There is such a thing as un-powered usb ports. However, I believe the name is misleading, as in reality they are simply low powered (if memory serves correctly). However, it might be worth looking into if you can't successfully clip the power as in the previous post.

rcxquake said:
There is such a thing as un-powered usb ports. However, I believe the name is misleading, as in reality they are simply low powered (if memory serves correctly). However, it might be worth looking into if you can't successfully clip the power as in the previous post.
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An unpowered USB hub will still pass power. It just gets a maximum of 5v from the computer so you can't power multiple devices that actually need any substantial amount of power.
A powered USB hub just makes sure that all of the ports get their full 5v.

universal micro-usb cable

I accidentaly lost (temporary) my original micro-usb cable for galaxy note. I have some noname micro-usb cable, and I notice that my SGN doesn't recharge through that cable. Is it normal?

I think there Is no difference, i hav one cable at office i was using it with nokia n97 thn sgs n now note.
Original one keeps at home. Even i m flashing with that unbranded cable, n more thn 20 flash of mine n friends, i didn't brick single

dr.ketan said:
I think there Is no difference, i hav one cable at office i was using it with nokia n97 thn sgs n now note.
Original one keeps at home. Even i m flashing with that unbranded cable, n more thn 20 flash of mine n friends, i didn't brick single[/QUOTE
I just find micro-usb from N97 and it works! Thank a lot!
Click to expand...
Click to collapse

ive got generic micro usb cables i got off ebay and not had any issues chargin via usb ports when its hooked tot he pc or fromthe mains charger

I have an old nexus one micro USB and i canNOT connect to Kies with it.
Sent from my GT-N7000 using XDA App

It is possible that these are cheap USB cables that are incompatible to USB 2.0 or something like that.
I have one of these cables
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(not exactly this but it looks like that)
and it does not work with my Note.
Then i have some other normal USB cable that works with everything.

[Q] Using HDMI adapter and USB Hub at same time?

Hey guys, i was wondering if there is a way to connect our xz to tv trough hdmi and playing videos from hard drive at same time. I've got samsung hdmi adapter, wd elements hdd and xbox controller reciever. If I connect ac powered usb hub (with phone connected trough micro usb cable, my hdd and reciever plugged in) to hdmi adapter as power source, will this work? I know that usb hub has got power to feed 6 hdds
So please, every answer will be appreciated

Micro usb in USB hub, HDMI in power connector? HDMI will work only if you connect it directly to the phone. Can you draw what you mean?
EDIT: You can try on this way:
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neoxx3m said:
Micro usb in USB hub, HDMI in power connector? HDMI will work only if you connect it directly to the phone. Can you draw what you mean?
EDIT: You can try on this way:
View attachment 3060170
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Click to collapse
I mean something like this

Viktor Zelenay said:
I mean something like this
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Click to collapse
There will not be enough power, you need hub with ac adapter.

neoxx3m said:
There will not be enough power, you need hub with ac adapter.
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Click to collapse
yep, i am going to buy this one: www.transcend-info.com/Products/No-402
And i was thinking, that maybe it will not be able to detect hdd and this stuff, because it wont be connected through USB otg.

USB to Ethernet IC won't work if I pull out the ethernet cable

I know this is an off-topic, but I need some help on debugging the issue faced on USB to Ethernet design. Hope someone can help me! I have took reference form LAN9500Ai Development board().
Issue:- When Turn on the Power , USB to Ethernet work, and Three LED glow with one of them blinking. After that I removed the Ethernet cable and plug it back then it does not work. ( Sometimes All three LED light still glow even after removing the Ethernet Cable). My schematics is attached.
Schematics details:- D6,D7,D8 and D9 NOT mounted. R33 is Do not Mount Connector J2 comes form PC USB port ( PC USB 5V convert to 3.3V via regulator than 3.3V apply to connector j2) , See attached C2,C3,C4 and C5 Do not Mount.
Unsuccessful solution Tried 1. Mount C2,C3,C4 and C5 and No advantage 2. Remove R36 but no advantage
Successful solution Tried 1. Removed Connector J2 and reinsert then it Works, but again if i remove the Ethernet cord and reinsert it did not work. So every time after removing and reinserting cable i have to follow this
In Schematics IC U3 pin , (manual Reset) , i tried to reset the LAN 9500 chip using this pin , and Chip get reset and it works, but again if i remove the Ethernet cord and reinsert it did not work. So every time after removing and reinserting cable i have to follow this
Please suggest how to resolve this problem, since in hardware i do not have reset control in current PCB version,
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(Schematics broke down to two above image)
Thanks!

Charging other usb devices with my note

I understand Note can charge devices such as my Bluetooth micro USB earphones, however i am straggling to get right cable i.e. micro USB to micro USB and perhaps an adaptor on Note 8 to convert it to C type.
Anyone done what i am trying to do?

Use the otg adapter that came in the box

vadimo said:
I understand Note can charge devices such as my Bluetooth micro USB earphones, however i am straggling to get right cable i.e. micro USB to micro USB and perhaps an adaptor on Note 8 to convert it to C type.
Anyone done what i am trying to do?
Click to expand...
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Normally you only need to use the included OTG adapter. Connect it with your note 8 and connect a normal USB cable (USB to micro USB) with the device you want to charge. It should be automatically begin to charge the other device. Maybe you need to pull down the statusbar and tap the "android system charging" notification and tap it. Then it should open the menu you will see on my second screenshot. Select the last entry "charge connected device" and there you go. It should be charge the connected device
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Don't be afraid to hit the "Thanks" button if someone helped you. It don't hurts

Completely forgot I had OTG adaptor, that will the connectivity type issue
Thanks