yashsingh1/xdaforums huggingface dataset:
[Eee Pad Transformer Accessories] aquamally:
Tried out Hacked usb cable

Thanks for the original post Devcake, nice work.

I just got hold of my Asus Transformer, saw your post after I experienced problems with my charger, 0B-2LF, overheating. I looked on eBay for the Barrel to Usb cable, but it's a 3 week delivery, so I decided to have a go myself. I had a Crown Universal DC Charger lying around and some spare usb cables, so I decided to have a go at a Hack Job Charger. I cut the end off the Charger cable before the tip. The Charger outputs a Max 300mA. and 3.6VA, variable outputs from 3v to 12v. Tested the Outputs first to make sure they were ok, set on 12v it puts out around 16V . On 9V it puts out about 12V. (I dont know why the outputs vary?). I cut the Male end off a usb Female Extension cable. As Devcake mentioned, I checked the Polarity, and wired it up to the Charger cable. I cut another usb cable up, bared the ends, and placed it in the Female Extension. Checked the output, still the same, and still showing Positive Polarity. Time to give it a go, Held my breath and plugged in the Transformer via Asus usb cable, battery shows connected but not charging. It made a slight ticking sound, so I decided to remove it. Plugged the original charger in, and that was ok.

Do you think the 300mA are too low on this charger?

Edit: The reason for the variable outputs is due to them being unloaded.

I've since tried out a Netgear Router Adaptor. It puts out 12v at 1A. Works a treat with the Hacked Usb Female Extension cable.
[Eee Pad Transformer Accessories] johnu86:
I had the issue with charging my Transformer, even from the usb of my pc. Once maybe for 20 times the connections worked. I made a diy charger @ 12v, 1,250A and ofc female usb 2.0 from the usb hub or something. But the problem was not with a charger (btw diy charger works flawless, 1/20 too). So I changed the rom, from latest prime to hd, and now everything is ok on both charger.
[Eee Pad Transformer Accessories] tennvol12345:
FYI,

Used my old Kensington universal power adaptor with the USB plug and it charged the Transformer from the wall. I assume it will work with the car and airplane adaptors as well. Shut off the screen and WiFi and left it for a few minutes, came back and the battery level had gone up 2%.

Will test it in the car tomorrow. Trying to charge it with screen off and WiFi on as we speak, will let everyone know what happens.

Not sure if the newer models offer a higher output but my 4 year old model at least offers up some charging capability, which is good since I don't have to bring the TF wall brick with me when I travel
[Eee Pad Transformer Accessories] Logain Ablar:
@ DevCake,

Great post and has help a lot in trying to source a replacement charger until a new one is shipped from ASUS.

I now have one charged made up from easily obtainable parts and one scratch built.

Off the shelf:

1 * 15v 1.2a wall charger - From eBay, Amazon or Maplin's but you will pay more at Maplin's

1 * Polarity checker - From Maplin's

1 * 3.5mm DC power socket to Female USB Type A from

Approx £20-£25

Scratch Built:

1 * xBox 360 Kinect power supply - From Amazon

1 * Spare USB 3 extension cable

Connecting bits & heat shrink from Maplin

Approx £9-£12
[Eee Pad Transformer Accessories] cis.snakeman:
I confirm, Universal Laptop charger set on 15v + 5.5mm DC Female Barrel to USB Female cable work perfectly !

I gain longer charger and less heat !!

Tips:

You can use Dual Battery Widget to retrieve information during charging.

https://market.android.com/details?id=org.flexlabs.widgets.dualbattery

or XDA Topic: http://xdaforums.com/showthread.php?t=1123363
[Eee Pad Transformer Accessories] regP:
I found the Dynex universal camera charger but I noticed the USB adapter says 5v only. it'll still work?
[Eee Pad Transformer Accessories] Logain Ablar:
No, 5v is just not enough to change. You can get a 3.5mm DC to USB female type A adaptor and use the appropriate tip on the Dynex. Just be careful on the polarity.

LA

---------- Post added at 10:21 AM ---------- Previous post was at 10:17 AM ----------

Crap :-( I've ordered two of these from the same seller! Never mind...

LA

Edit: Yep they don't work in extending the Asus charger but they work with the ones I've knocked up so no real loss :-)

LA
[Eee Pad Transformer Accessories] qwerty017:
Would this work for the car?

Would this Enercell 12v 2amp work for charging in the car with the barrel to USB adapter from ebay? Anyone using it?
[Eee Pad Transformer Accessories] uncorq:
Weird; I bought 2 Belkin USB 3.0 "extenders for both myself and my BF and and they work flawlessly:

[Stock Asus Power block/plug ]<-- usb 3.0 extender --- [Female end usb]<-- Stock Asus usb dongle <-> Tablet/Dock

Got ours Off ebay for 6 bucks per cable.
[Eee Pad Transformer Accessories] Logain Ablar:
Theses are generic un-branded cables, but I would have thought they complied with the USB 3.0 standard. Not a big issue for me in any case.

LA
[Eee Pad Transformer Accessories] Stevie_m:
Just to add a little for UK users.

I used a 12v 2A charger which I had kicking around and which had a 3.5mm DC plug as an output. When I did this about a month ago I couldn't get hold of a 3.5mm DC to USB female adapter here in the UK but just happened to have a USB extender cable with a USB male at one end and a USB female at the other. I removed the USB male connector and attached a 3.5mm DC socket purchased from Maplin (£1.99 P/N JK12N) in its place. This setup works fine, fully charging the TF1 from flat in about 3 hours.

I see there is now a 3.5mm DC to USB Female Type A adapter available on Ebay UK for £2.99 inc postage which makes things even easier.
[Eee Pad Transformer Accessories] DevCake:
I've been gone for a while but the post is growing! 67K views =]

~DC
[Eee Pad Transformer Accessories] smarti13:
charget out of order -> help

my standard asus cable is out of service

I've got the USB host adapter, it doesn't charge with USB 2.0 cable, would it charge with USB 3.0 cable on a PC or USB charger ?

Can anyone having USB host adapter TRY ?

thanks
[Eee Pad Transformer Accessories] Bob Smith42:
No, USB 3.0 does not work in the USB host adapter.

If you look inside the 40 pin asus cable USB plug has normal 4 pins, plus a second row of 5 pins. The extra 5 pins are USB 3.0, but non standard. There are no extra 5 pins in the USB host adapter.
[Eee Pad Transformer Accessories] grabbo:
from the shelf (UK)

Hi there,

I've started reading this but my technical knowledge is unfortunately not up to understanding it.

Is there anything I could just buy off ebay or from anywhere else in the UK that just works as a mains charger for my transformer and doesn't cost £40?

I am happy to buy an adapter cable (e.g. female USB, or something and put it on a different cable) but that's as much as I would manage. If someone could just send me a link, that would be great,

thank you!!!
[Eee Pad Transformer Accessories] yorkey:
If buying two parts and plugging them together is too technical :confused: then I dont think there's any solution (there's quite a few that involve this on the first page :rolleyes:)

Even the official adapter which is only £25 involves plugging two parts together. However if you want simplicity then thats probably the best bet.
[Eee Pad Transformer Accessories] jaxx:
Imagining a Y cable for dev+charge

Hi all,

Having a, yet, unrootable B08 TF101G (3G 16GB+Dock), and being back on development on android (yes, i used to be an apple employee and i did dev a bit on iOS, sorry), I'm stuck in front of a stupid situation:

There's no real way (unless rooting and setting up ADB over TCP) for having ADB hooked up and getting the tablet to charge at the same time.

The screen on chews the battery at impressive speed, off+wifi, a classic big-amp but 5v only macbookpro plug only keeps the battery stable...

(not mentionning the hard to find power adapter, making it a dangerous single point of failure, making this thread exist)

So at this point, I can't dev/debug/test a whole day... sorta bummer isn't it?

I was having a little idea in mind, and was wondering if anyone who has already broken up the cable could tell me:

When on charge: are the USB signals still present on D+/D- ? (i'm not sure of how the signaling is managed actually, current-loop? differential voltage? and if so, would it be safe to reroot the two wires to another usb plug)

My idea is to make a Y cable by cutting a USB 3.0 M/F cable

Type A USB 3.0 (female) to receive the Asus cable

Wire Pins 1/4/7 accordingly through the Male end (+ add barrel eventually)

Take D+/D- from the tablet side to a USB 2.0 male cable for the computer

Unless if the dock or tablet unables the data on the USB (i suppose they'd make it independant, power pins would go through energy control) they probably let the signaling on and at standard specs.

Of course, i'll test on a hub before burning my laptop :)

Has anyone tried, or has anyone have strong convictions it could work before putting bucks on cables and power supplies?

Thanks,

JaXX
[Eee Pad Transformer Accessories] Bob Smith42:
The tablet side of pins 1,4 require 11v to 15v to charge. You may need 5v on the non-tablet side of pins 1,4 depending on what you are doing. If you need 5v on the non-tablet side you need a second 5v power source.

I think the USB 3.0 pin 7 is only for activating 15v in the wall wart. But, I have not tested to be 100% sure, e.g. the tablet might use pin 7 for something more.

(1) A USB 2.0 cable wiring might work, D+/D- only, as long as you disconnect the 15v power from the tablet to your PC, and hook 15v charger on the tablet side of pins 1,4. I have not tested this yet, but might do it.

(2) My other thought was to mod the USB host adapter, adding a 2.5mm barrel plug for charging with 15v. This might be good for charging tablet in cases with a USB device attached like HD storage, CD drive, etc.

I do not know if it is possible to connect a PC for development using the USB host adapter because the PC is a host. Interested if anyone knows.... :)

(3) I might have another solution for development, because I modded my tablet months ago adding a 2.5mm barrel plug socket for 15v charging. I tapped into the 40 pin socket 15v lines inside the tablet and found a good location for a 2.5mm barrel plug socket. I charge with 15v charger plugged into the 2.5mm socket, but this puts 15v on pins 1,4 of the ASUS USB 40 pin cable. So, I would need to cut positive power line on M-F USB pass through to use with PC host. This mod can be used with host adapter while charging because host adapter has dc-dc step down voltage (step up amps) to 5v on USB non-tablet side, but again not sure what happens if connected to another USB host like PC.

Good luck.
[Eee Pad Transformer Accessories] DevCake:
Once a device is considered a usb host the power if available will flow towards whatever device you have connected to it. I can't see you having the ability to charge while the host adapter is connected BUT you gave me an idea for the USB dongle I plan to make with the USB host adapter. As long as the TF 40 pin uses different pins for supplying power and accepting power I could branch off another connector with the dongle that allows for charging while using the host adapter.

Bob has anyone verified all of the pin responsibilities on the 40 pin yet? I've got a connector on order with mouser but I was going to focus on the dongle before going through all of the pins.

Jaxx check the usb host DIY link in my signature, I'll add charging capability to the list.
[Eee Pad Transformer Accessories] DevCake:
Nope

Mah is not important, well it is for how long the battery will last but it's not what the TF is looking for. It's looking for 11 -15 V DC. ANY device that has a USB connector is 5.5-6V. The only way I can see any Battery devices that has USB output working is if you combine 2 or 3 of them in series. 2 5v Batteries =10V, 3 5V batteries= 15V. There are battery packs out there that support 12-15V, this is what you want but you still have to put together a connector that will allow you to use your factory USB cable. And that brings us back to everything I explained in the OP.
[Eee Pad Transformer Accessories] DevCake:
The one thing I can say about all of the testing I've done with different power source configurations is that there is one constant with the TF charging, inconsistencies. A month ago I thought my factory charger was shot. Used my home brew charger and it charged. a week later I tried my factory charger and it worked. I've tested AC-DC 12-14 V adapters, some the adjustable kind, some that were made for other devices with amp ratings from 800MA to 25.A. All of the worked. I've connected 12V (13.8V) batteries directly to the TF and it charged fine.

All I can say is that results will vary but if you stick to the basics, 11-15V and make sure your polarity is right, you will find a solution.
[Eee Pad Transformer Accessories] jaxx:
Actually, the workstation/pc/mac/whatever being the host, it's that which will e giving the 5v output, so, it doesn't need to receive anything at all and could be ignored

Yeah, to make it simple, my thought is really just taking out D+/D- from a usb 3.0 extension cord on the female/tablet side, which alone works perfectly well for charging the asus (and keeping common GND everywhere) and leaving cabled all the other lines (1/4/7 or others if needed)

Well, gonna use my Amazon premium and get a few cables :)
[Eee Pad Transformer Accessories] DevCake:
Well I got busy yesterday and forgot to order the cable end connector. So I went to order it today and didn't realize that Mouser was not in the US so they want $40 for shipping for one connector.

I'm going to check to see what the cost is to ship locally then slow mail back to me. If it is worth it I'll be looking for someone in the UK to receive some connectors then ship them back. If someone wants to volunteer I will make them a dongle if they also send me a USB adapter.
[Eee Pad Transformer Accessories] SlimDan22:
Hmm I get $8.00 Shipping? , You sure you are on the U.S site or order a huge amount by accident lol

I ordered 10 and came out to be $8:00 shipping UPS or FedEx, $6.00 if USPS

http://www.mouser.com/Search/ProductDetail.aspx?R=2129276-1virtualkey99990000virtualkey571-2129276-1
[Eee Pad Transformer Accessories] PatrickVogeli:
I must say this thread is very interesting. So we want to develop a cable that will let us charge the Table and give us at least one USB host port, right?

Has anybody with a dock, tried to look up the pin-out? I mean, I saw that diagram, and from there we more/less there are some power sources, USB data and the audio stuff, but the dock should be a little more complex, since it allows charging the tablet while plugged in and still gives USB host function. I also assume the dock can be connected to a computer and be able to sync with it while the tablet still gets charge from the dock, correct?

If so, my guess is that we have something like the following:

-4 pins for standard charging and syncing: 2 are power INPUT (5 o 15V), 2 Data+/-

-4 pins for USB host function: 2 are power OUTPUT, 2 Data+/-

-4 pins for Audio: Left, Right, Mic, Ground (shared)

-some detection pins

That would be a sane minimum, I think.

Since the tablet still charges while docked and syncing with a PC through the dock, there is another fact: PC outputs 5V, Tablet needs 15 V to charge. To solve this, I think there are mostly 2 possibilities:

-1st one: the 5V pc input is not connected directly with the Tablet Dock connector, but the dock has some electronic to "split" that power and still feed the tablet with 15V through those pins and uses those extra 5V to whatever it could need.

-2nd one: the 5v pc input is directly connected to the tablet. That would mean the dock uses 2 extra separate pins for charging the tablet.

Then of course, it may all be different and power pins may be reversible (can output or input power), but having a 40 pin connector that wouldn't make sense to me.

I don't have a dock, nor the USB adapter, nor the SD card reader, so I can't really do any debug or socalled "reverse engineering", but that may help somebody.
[Eee Pad Transformer Accessories] michadreyer:
if someone order 27, the shipping is free!
[Eee Pad Transformer Accessories] DevCake:
Patrick,

The Jury is still out on if you can create USB host function by simply finding the pinout from the 40 pin on the tablet sans docking station. The USB adapter from ASUS has a circuit board which has a voltage regulator on it which is most likely there to regulate power to the USB device you have connected.

I'm working on building an extension cable or dongle that uses the factory USB host adapter for USB host function with an added connection for charging while using the USB host adapter. Check the USB host adapter link in my signature to follow or contribute.
[Eee Pad Transformer Accessories] redrol:
My TF charges with the naked USB plugged directly into my Gigabyte USBx3 motherboard. The charge indicator does not work but if you look at the battery levels after awhile you can see it goes up just fine. So basically you can ADB all you want while plugged in and it wont die.

:D
[Eee Pad Transformer Accessories] DevCake:
There have been mixed reports of people having success like yours with standard 5V USB connectors or supplies. The battery will charge but at a very slow rate that is why you are not seeing a charge light or indicator.
[Eee Pad Transformer Accessories] jaxx:
Hey all!

And thanks for the inputs.

I got a USB 3.0 cable a couple of days ago... Extracted the D+/D- wires.

All the rest is untouched, and therefore charges as expected.

But it seems that it refuses to let any data go through when on charge (unless it's supposed to use V deltas with the +5/GND instead of my initial though of a current loop on D+/D-) I'll have to dig up my oscilloscope in the attic, but I have huge doubts.

As for charging on USB... well, my MacBookPro has overamped plugs (known for that), enough for slow charge screen off (wifi on), but the screen eats more than what my usb gives (and well, i don't wanna be blind on the unit, and can't unroot my B08/TF101G yet to work around it ... yet)

Again, thx !
[Eee Pad Transformer Accessories] amm009uk:
So if that was all black and made by Asus most of us would happily pay ~$40 for it:eek:

Thanks for sharing I like it and will copy+paste yours:D
[Eee Pad Transformer Accessories] DevCake:
See that's the problem. most people think that the factory accessories should be much better than the DIY's which in the case of the TF101 is not true. At least when it comes to charging. I have one factory charger, 2 DIY wall chargers and 1 car charger. If my TF sits when the battery is dead the factory charger will not always start charging right away and in some instanced not charge it at all. All of my DIY's start it charging as soon as they are connected. And once I have a little charger the factory charger will work fine.

I love my TF but honestly, the factory charger is CRAP.
[Eee Pad Transformer Accessories] scottmog:
Sold my transformer last week and forgot I have an extra charger. If anyone is interested in purchasing it send me a message. Still wrapped in plastic covering stuff. Used it once maybe... it was my spare so I'm not sure if I used it at all
[Eee Pad Transformer Accessories] setite:
So I got mobile charging working using the method in the OP. I just got a BBY Dynex charger, bought it open box but unused on ebay for less than 10$ and I can confirm it works.

At work I noticed that my ASUS charger wasn't working, and it wouldn't work for a bit when I got home. I ended up buying a new one, and the old one started working right after, but still not at work. The Dynex works so now I should have a charger that works well. It's smaller than I expected too, which is good. Now if we could only get some cheaper 3rd party cables. I know it's not likely. I like this transformer, but I look forward to a Kal El with keyboard like this with standardized charging.
[Eee Pad Transformer Accessories] b01000100:
Hello everyone,

I joined up to post a car charger that I found. If someone else has already posted this one, I am sorry. I just wanted to be sure to share.

I found mine at Meijer store. It was 11.99, and it is an i-xt branded charger. It was with the car starter accessories. The section was labeled car starters, but it was all lights and automotive electrical stuff. I have a picture to post for it, but I need to post a few more times in these forums so I am allowed to post the image. I will edit this post with the image later.

When I first plugged it in and set it to 12V, it didn't seem to be charging. I slightly rotated the barrel of the plug in the lighter socket, and it kicked right in. I then tried unplugging it and plugging it back in to make sure it wasn't a fluke. It worked every time after that.

If you have a Meijer close to you, it would be a good buy.
[Eee Pad Transformer Accessories] fontzter:
Another Car Charger Options?

Wow! I would have never dreamed it would be so hard to find a car charger for my transformer. Thankfully, I found this thread in my research and did not waste time on a sub par item.

On the OP the second ebay link (for a diy car charger) does not work. Also, the first on ships from Hong Kong.

Can any of you electronically savvy posters recommend some other alternatives. Preferably w/i the US, so it will ship faster? I was also hoping that I would not end up with some large box in my car.

TIA for any help.
[Eee Pad Transformer Accessories] EwanG:
I have an iSound 16000 mAH battery that I have been using with my 4G router (Cradlepoint PHS-300) and my iPad 2. Specifically the one here:

http://www.amazon.com/i-Sound-Portable-Power-iPhone-Blackberry/dp/B00439G3WS/

Would that work with the current Transformer and/or the upcoming Prime? If not, would this New Trent one be likely to work any better:

http://www.amazon.com/New-Trent-iCruiser-IMP1000-Blackberry/dp/B003ZBZ64Q/

I do a fair bit of travel away from sockets, so knowing I can use one of these would be helpful.

Thanks in advance!
[Eee Pad Transformer Accessories] hshoem1:
EwanG - from what i see all of the outputs are 5volts. 5v will charge the TF but take days to do it. The fast charge mode requires at least 11volts. The normal USB output will not provide that much. So you would be stuck with the slow mode recharge. You need to look for a laptop battery extender that offers 11 to 15 volts output or DIY your own.

Hope that helps.

hshoem1
[Eee Pad Transformer Accessories] ganassa:
Hi

I've found two items on ebay:

A car charger:

(sorry I can't post links right now)

And the same car charger + a standard wall charger:

(sorry I can't post links right now)

reading the description, here are the interesting specifications (for the car charger part):

Those specs should fit perfectly, isn't it?

I just wrote to the seller asking if this could guarantee a car charging for the Transformer. What's your opinion?
[Eee Pad Transformer Accessories] hshoem1:
The specifications "appear" to be good. Voltage and current both measure up to what is needed. Because I do not know what the output jack looks like I can not be sure on that point. Just be sure to check that the positive voltage and negative voltage are going to the right pins on the Transformer's 40 pin cable. I would check before I plugged my TF into the power not after. The pin out diagram is at the beginning of this post.

hshoem1
[Eee Pad Transformer Accessories] ganassa:
Thank you, I've alread read the top-post - and almost the whole thread ;)

I don't feel very confortable with electronics connection so, altough I think I understood everything, I would prefer to get an already-made device.

And this one doesn't need further adapters: the output is not a Jack, it's an USB female connector, you just need to connect the original ASUS USB charger cable to it.

look at

h**p: / / goo.gl/xu2m9

or look on ebay for "Custom Made 0.5M USB Car Cord For Asus Transformer TF101 Tablet Car Charger" - EDIT: now expired

there is also a similar device on Amazon.com (just look for "NTK Bullet Charger for Transformer") but reading the reviews it uncertain if it will really charge the Transformer (some says yes, other say no).