yashsingh1/xdaforums huggingface dataset:
[Galaxy Note II Android Development] Ryan_G:
It wouldn't make a difference as its been learnt that the Kernel is limiting what the phone can draw, so regardless of decreasing the coil it would still be drawing the same. If you want to increase the amount the phone can draw, you have to flash Perseus Kernel [24/10]

Apparently its actually increased in 24/10 version, but the original kernel is limiting the charging rate, so it will always be 0.42A
[Galaxy Note II Android Development] FloatingFatMan:
If Samsung have limited it to 0.42A in the kernel, odds are there's a very good reason for it. I totally can't see the engineers saying "I know, let's slow the inductive charging down for fun."

Going higher MIGHT be OK, but you also might risk damaging the induction coil, or even the phone itself.
[Galaxy Note II Android Development] Ryan_G:
I agree, I wont be exploring flashing the kernels just yet. Samsung may increase the charging current in a future update when they release the official wireless charger
[Galaxy Note II Android Development] nm8:
@Ryan how did you measure the actual charging voltage and amperage?
[Galaxy Note II Android Development] Ryan_G:
I had to extend the cables on the charging circuit temporary to have the cover off, I measured the voltage by placing electrical tape on both the positve and negative wires to keep them against the meter test leads, I then touched the test leads on the actual charging pins, this gave me the voltage under load (Testing across the cirucit). Giving about 4.8VDC

To meaure the amps I connected the negative wire to the charging pin and held it there with electrical tape, I then swapped the test leads over to Amps and and connected one end to the positve wire and with the other test lead i touched on the to the positve charging pin (Testing within the circuit). 0.42Amps

Hope this helps.

EDIT:

Also I should point out, I took the readings for the amps when my phone was at 95% full which might cause it to draw less. If I get some time and my phone is below 50% I will take the reading again to see if it increases.

I took the readings on the Genuine Samsung 0.7A Charger and the new Genuine Samsung 2A charger which both gave the same measurement 0.42A
[Galaxy Note II Android Development] nm8:
Thanks man. It looks like we are stuck with those voltages. I dont know about the kernel though. But just as someone in this thread said, Samsung must have a good reason why the power draw when charging is limited. Well see when Samsung release their own wireless charger and if they will update the kernel or not.
[Galaxy Note II Android Development] Ryan_G:
Do you want a video of what it looks like and how the battery cover clips on or did you want a video of the making of the MOD as I won't be taking the whole thing apart and rebuild it again but somebody who does the MOD could take a video of their build process.
[Galaxy Note II Android Development] Ryan_G:
No problem, I found the phone charges up at a alright time. I keep forgetting to record the time that it takes to charge up.

The only thing im concerned about is that I'm now constantly placing the phone back on the dock which I'm worried about killing the battery that way by not running the battery down fully, its a habit of placing it on there when Ive finished with it.

I'm dissappointed about the MHL cable does not working without plugging a charger directly in to it, I was hoping to have the phone on the dock charging wirelessly with an OTG in the empty MHL port, and having XBMC set up with an IR remote connect via the OTG cable. Making a perfect on-the-go media centre.
[Galaxy Note II Android Development] garyd9:
I can't find any references via google on the max current rating of the palm pixi/pre wireless charging coil. (I can find the information for the base, but not the part that is inside the phone.)

However, the n7100 (and sgs3) kernel has functionality built in that will automagically back off the charging current if its unstable. So, for example, when I plug my n7100 into an unpowered USB hub (using the perseus kernel), it tries to charge at 900mA and finds things are unstable. Within 1/2 a second, the kernel backs off the requested current to 800 then 700 before seeing a "stable" voltage - and then backs it off an additional 100mA (to 600mA) for stability.

Disclaimer: This doesn't mean it won't cause damage - only that it tries to detect instability and corrects for it.

That same code will function with the 'wpc' (wireless charging) interface.

Take care

Gary
[Galaxy Note II Android Development] FloatingFatMan:
Ah, but if the higher voltage IS stable, then it won't step it down and could quickly end up causing damage thanks to the higher current allowed in Perseus.
[Galaxy Note II Android Development] ardabey:
What you are doing (frequent charges without full discharge) is the way to go to prolong lithium Ion battery life. Li-ion doesn't really like the full discharge thing and that behavior is an unfortunate leftover from older battery technologies. Take a look at the following if you are into the technical details:

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Oh, and before I forget, great job.
[Galaxy Note II Android Development] rj3005:
No, the charging limit is to protect the coil (or in case of usb charging to keep max current within the usb specs)

SHORT ANSWER: the charging circuit will regulate voltage and current to charge and protect the battery

LONG ANSWER:

Lithium Ion/polymer charging is controled in two stages, first stage while the cell voltage is below 4.2 volts it limits current (typically at max safe current for lithium is 1C which translates to 3.1 Ampere on our Note 2)

The second stage starts when cell voltage reaches 4.2V from that moment the charger circuit limits the Voltage. (The more the battery charges the less current will flow at this constant voltage)

When the current drops below a certain threshold (typically 0.05C, +- 150mA on our note) the battery is considered full and charging will stop.

Every battery also has a protection circuit build in against overcharging/over discharging

For those that see a lower voltage on the coil when changing;

It may well be that when your battery starts to charge it will draw more current then what the coil can supply at 5v... This is completely normal as long as the phone charges without complaining (and the % goes up)

---------- Post added at 10:08 PM ---------- Previous post was at 09:54 PM ----------

Totally agree.. small charge cycles are much better for the battery .....but to be totally exact: Lithium Ion likes it most if they are being kept at around 70% full (and at room temperature or slightly below)
[Galaxy Note II Android Development] VIIRU§:
Lol yea I was kinda looking for a how to video.
[Galaxy Note II Android Development] Ryan_G:
Thanks for that, you've answered my concerns about the battery.
[Galaxy Note II Android Development] Ryan_G:
Okay, I will see what I can do about a video. I'm hoping someone who does the MOD captures the build process on camera, Im not really wanting to pull mine apart to capture the steps on camera
[Galaxy Note II Android Development] VIIRU§:
Totally understand. But willing to donate if you decide later to do it.
[Galaxy Note II Android Development] LukeLeBron:
I'd be willing to pay for a new battery door, and the materials, and shipping, and a little extra if you'd make it for me (I've never been too good with a soldering iron xD).

But I'm not sure how much shipping to the US is and how much of a pain that would be for you.
[Galaxy Note II Android Development] XenonAndroid:
If I'd known someone wanted a video i would have made one whilst doing my Mod, Thank you for this and here mine and working well :)

I had no insulation covers for the copper wire so I warped in in electrical tape, :s lol will it be okay :)

If anyone is happy with this, ill be happy to walk you frew it on Skype via Video or Call or IM just PM me,

I take no credits for this MOD im just here to help.
[Galaxy Note II Android Development] Ryan_G:
Very Impressive :good: first one to do the mod so far. Did it take you long to build it?
[Galaxy Note II Android Development] XenonAndroid:
Under 10 Mins, and so happy, what is the charge time for a full cycle.?
[Galaxy Note II Android Development] Ryan_G:
Don't quote me on this, but i think when I last charged my phone at 50% on the dock it took about 2 half hours. So maybe for a full charge cycle we are looking at 5 maybe 6 hours.
[Galaxy Note II Android Development] XenonAndroid:
I'm fine with that, until Samsung release there package as my GF has the SIII, So i want to get the bigger Samsung Charging Plate.

[YOUTUBE]http://www.youtube.com/watch?v=vsj3IkyAqEU[/YOUTUBE]
[Galaxy Note II Android Development] nm8:
Got mine working, 6% charge in 30 minutes. The cables I used are only a temporary solution while I wait for the flexible pcb I ordered. Big thanks to op you've done a brilliant job!
[Galaxy Note II Android Development] Ryan_G:
Nice the flexible pcb sounds interesting
[Galaxy Note II Android Development] RavenY2K3:
Anyone seen this, it's the case already made up

item.mobileweb.ebay.co.uk/viewitem?itemId=200834522019&siteId=3&isClassified=false
[Galaxy Note II Android Development] nm8:
yeah Its flat, flexible but sturdy. I will try PCB etching, wish me luck.
[Galaxy Note II Android Development] turilo:
thats bad ass nice mod m8:laugh:
[Galaxy Note II Android Development] randy2:
Hopefully either the op or an electrician has some knowledge that they can help me out with.

The sprint version in the U.S don't have the induction pins but the software and technology is built in the phone so I was thinking of running connections to the + and - on the actual battery connection pins, and in theory would that charge the phone and the battery if the coil connects to the battery pins. Please let me know what everyone thinks I know u might have no clue but I just have a theory it will still work
[Galaxy Note II Android Development] rj3005:
DO NOT connect it to the battery! ! That way you would bypass the charger circuit built in the phone.

You could connect the coil to the power connections of the usb port.
[Galaxy Note II Android Development] Amdathlonuk:
Just ordered my kit so wish me luck!

I bought a Palm pixie case in the end as I couldn't get a Palm Treo.
[Galaxy Note II Android Development] randy2:
Not straight to the battery but to the pins the battery touches but I guess that could be viewed as straight to the battery also I guess let me know ur input please
[Galaxy Note II Android Development] dcwiker05:
I just ordered all the stuff to do this and I'm using the copper tape that rj3005 linked to. How should I fashion the pins to connect to the phone. The OP used solder but I'd imagine that isn't going to work with the conductive tape. Ideas?
[Galaxy Note II Android Development] VIIRU§:
Sweet find. Do you know if other charging pads besides palm support it? Something that can charge it faster?
[Galaxy Note II Android Development] Ryan_G:
Just an idea, cut the width of the copper tape and fold it on itself to create a spring which will go agains the charging port. Ive drawn a basic diagram to show you what i mean.

I hope this helps or gives you a better idea, i think you should still be able to solder on the copper tape.
[Galaxy Note II Android Development] Ryan_G:
I don't think so, only the palm touchstone unless there is a charging pad which supports the palm module, they will be using the coil and the charging circuit out of one of the palm cases. I don't believe any wireless charger will be any quicker then this one as its the phone limiting the current it draws which is 0.42A.

Hope this helps
[Galaxy Note II Android Development] nm8:
Here's my prototype, while waiting for the flexible pcb I ordered:
[Galaxy Note II Android Development] Ryan_G:
That looks really good as it is now, what will the flexible pcb be for. Are you rebuilding the charging circuit on the flexi pcb or is that going to replace the copper tape?
[Galaxy Note II Android Development] nm8:
It will just replace the copper tape.
[Galaxy Note II Android Development] chase_me:
Awesome mod..If you wont mind Can u make up a video of this (r atleast tell sme one who already did this or goin to do this ) cuz ppl with diff phones cud get a clear view of how to get this done :D

Great work there..appreciated would help a lot of devs and users in the whole android community.

PS:No offense meant here!
[Galaxy Note II Android Development] nettech_gt:
I have the ATT Note any reason why it would not work? Is JB needed to detect the wireless charging?
[Galaxy Note II Android Development] Ryan_G:
If you are talking about the Original ATT Note and not the Note 2, then you will have to look at this instead.

http://forums.androidcentral.com/sa...1-galaxy-note-touchstone-mod-photo-heavy.html

Its a bit more difficult as it requires you tearing down the Note to get to the the Micro USB and soldering on to it.

BEWARE: This will avoid your warranty

The Galaxy Note II has actual wireless charging ports at the side of the phone, this is why we get a Wireless Charging notification its not SW related so JB is not required on your ATT Note.
[Galaxy Note II Android Development] Ryan_G:
Sounds really good, you will have to upload some pictures of it completed.
[Galaxy Note II Android Development] rj3005:
You can make small copper balls from a piece of the copper tape and solder that on the tape you use as conductors.

Or like the drawing of ryan and fortify the upfolded coper with solder (yes you can solder on copper tape without any problem)
[Galaxy Note II Android Development] nm8:
yup, I still need to inspect the flexiblepcb if it can be etched just like noramal pcb's otherwise I will just have to cut it like the one in the pics I posted.
[Galaxy Note II Android Development] rj3005:
That's from a electrical standpoint connecting it straight to the battery. I repeat DO NOT DO THIS... lithium ion batteries need to be charged using a specialized charging circuit (which in our case is somewhere on the main pcb of the phone

If you note 2 doesn't have those wireless changing points you're kind of out of luck. .. you can use the same system as with the note 1 (link earlier in this thread) but it's a whole lot more complicated
[Galaxy Note II Android Development] Ryan_G:
Its definitely something that I am interested in, i may be acquiring an etching tank from a friend who doesn't want it anymore.
[Galaxy Note II Android Development] nettech_gt:
Thanx!
[Galaxy Note II Android Development] borikat:
is this method safe?
[Galaxy Note II Android Development] nm8:
my phone would have exploded or burnt already if it is not safe.
[Galaxy Note II Android Development] stojkov.matt@gmail.com:
this might help some people http://www.youtube.com/watch?v=0ga4N_Ih9GE&feature=related
[Galaxy Note II Android Development] E_Goldstein:
I want one of these so bad now haha awesome job man
[Galaxy Note II Android Development] chils41:
Pretty good job man.

I got a question.

If you connect + and - directly to Battery terminals, will it work ???
[Galaxy Note II Android Development] nm8:
read post no. 102 a few posts above your post
[Galaxy Note II Android Development] FloatingFatMan:
Go for it, but remember to videotape it. I've always wanted to see a battery and phone explode. :p

(But no... seriously... Don't do this. At all. Ever!)
[Galaxy Note II Android Development] chils41:
:eek:
[Galaxy Note II Android Development] Ryan_G:
As mentioned in previous posts, don't connect directly to the battery.

If you really want wireless charging your best bit would be to fit the coil to the case but with a micro usb lead coming out that plugs in to your charging port.

You have to connect the positive to Pin 1 and negative to Pin 5 (double check the pin layout for micro usb)

Pin 1 - 5V+ (Red)

Pin 5 - GND (Black)

This would be alot safer.
[Galaxy Note II Android Development] DirknJirkn13:
But using the two terminals to the left of the battery is fine correct? Like the OP did?
[Galaxy Note II Android Development] Ryan_G:
Yes those terminals next to the battery are fine and safe to use.

but some forum members have been asking whether its safe to connect the induction coil directly to the battery, this is not safe. They have been asking because phones like the Galaxy Note 1 have not got Wireless Charging terminals.

I hope this clears it up for you.
[Galaxy Note II Android Development] DirknJirkn13:
That definitely clears it up. Thanks!
[Galaxy Note II Android Development] supracharged007:
Can anyone confirm the Sprint version does not have the charging pins? That's highly disappointing if so :(
[Galaxy Note II Android Development] donnie_bhm:
Sprint note 2 - no charging pins

got my note 2 today... no charging pins ... :(
[Galaxy Note II Android Development] supracharged007:
GD Sprint..... WHY?
[Galaxy Note II Android Development] bkisho:
Anyone have any idea who this could be possible on the Galaxy Note 1? I am new to when it comes to disassembling phones. In the past I have opened up a Nexus S. I really liked this idea of wireless charging. I have been looking on XDA, google, and youtube but can't see to find a thread about it for the Galaxy Note 1. If anyone has tried or guide me on how I can proceed with this. Or even if I should attempt this. Thanks for your time.
[Galaxy Note II Android Development] rj3005:
In this thread there is a link to wireless changing on the note 1
[Galaxy Note II Android Development] BigladUK:
To be clear for me ( a simple man not great at DIY type jobs ), can I just run 2 pieces of copper foil from the contacts on the charging coil to the touch points that meet up with the wireless charging points on the phone ? I assume the self adhesive type foil is fine as that will stick to the coil contacts and phone case. All I need to do then is add something like blob of solder or small metal contacts or bent foil to the end of the foil so they touch the Wireless charging points when the back is on ?

I ordered a new Palm Pre Touchstone back from ebay for £3.50 and some http://www.ebay.co.uk/itm/MULTI-PURPOSE-SELF-ADHESIVE-COPPER-FOIL-TAPE-6MM-/360430320375?pt=UK_Trains_Railway_Models&hash=item53eb523af7 copper foil from ebay for £1.85.

I already have a couple of Touchstones laying around from previous phones.

Just wanted some clarity please

Thanks

Si
[Galaxy Note II Android Development] nm8:
I think you can do that but the sticky side of the copper foil is insulated (the actual sticky acts as an insulator.

Just bend the end of the foil that meets the charging coil.

edit:

the copper foil you ordered is actually the one I am using.

---------- Post added at 04:18 PM ---------- Previous post was at 04:11 PM ----------

Please next time read the thread from first page before asking, as the answer might already be in previous posts... in your case its in post no.98 and to make it ven easier for you, here is the link:

http://forums.androidcentral.com/sa...1-galaxy-note-touchstone-mod-photo-heavy.html
[Galaxy Note II Android Development] Ryan_G:
nm8 hows the flexible pcb going?
[Galaxy Note II Android Development] nm8:
still waiting for delivery... I will update this thread when I have done it...
[Galaxy Note II Android Development] bkisho:
[/QUOTE]

Please next time read the thread from first page before asking, as the answer might already be in previous posts... in your case its in post no.98 and to make it ven easier for you, here is the link:

http://forums.androidcentral.com/sa...1-galaxy-note-touchstone-mod-photo-heavy.html[/QUOTE]

Sorry about that, thanks so much for the help.
[Galaxy Note II Android Development] wayne7511:
I'm sorry if this has been asked but could someone please provide some link where I can get the touchstone case on ebay please?

I've found a few on ebay but they cost like 30$ shipped to australia....
[Galaxy Note II Android Development] nm8:
http://www.ebay.com.au/itm/New-Palm...478497?pt=PDA_Accessories&hash=item3f1901a7a1

http://www.ebay.com.au/itm/OEM-HP-P...380753?pt=PDA_Accessories&hash=item2317eeca91

http://www.ebay.com.au/itm/Original..._MobilePhonesCasesPouches&hash=item3ccbcff726

http://www.ebay.com.au/itm/Original...ories_MobilePhoneChargers&hash=item3ccbcf9535

I've got to say the ebay seller APDirect is where I bought my parts from.
[Galaxy Note II Android Development] mimmus:
I already ordered the two parts for making this mod by myself ... but I'm concerned about the possibility that the NFC coil/antenna can get the field of the base and in some time damage the NFC chip (or SOC) it self.

Did someone already mind or checked this or I'm totally wrong to worry for this?
[Galaxy Note II Android Development] rj3005:
On the note 2 the NFC antenna is located in the battery cover near the top the mod puts the coil below the NFC antenna on most likely the same place as were Samsung will locate it when they release the official solution. I've no worries regarding the NFC hardware
[Galaxy Note II Android Development] rickhuizinga:
Working on US T-Mobile Galaxy Note II?

Has anyone gotten this mod to work on the US T-Mobile version? I connected 5V from a USB cable to the wireless charging pins, but the phone did not indicate that it was charging. I'm guessing that these wireless charging pins are disabled in the firmware for the US T-Mobile version...???
[Galaxy Note II Android Development] woodat:
another tmobile note ii here, confirming it doesn't seem to be working for us.
[Galaxy Note II Android Development] Ryan_G:
I was going to say the same thing as rj3005.

I've tested NFC, by scanning and also by using S Beam and both worked perfectly fine after this Mod. I can understand what you mean about the NFC coil but Samsung will be releasing wireless charging and that is going to be a charging plate which would cover the whole surface area of the phone whereas the touchstone only covers the bottom half of the phone so shouldn't affect the area of NFC either way. I don't believe it would cause any damage but I couldn't guarantee it.

With 'switt' case the reason it wasn't working, see the below link.

http://xdaforums.com/showpost.php?p=33235615&postcount=50

Make sure you've got the polarity correct from your USB cable to the pins remembering that on the Note top pin is positive and bottom pin is negative. Also if you have a meter then plug your phone in the charger via microusb port, and check the wireless charging pins to see if you have a voltage.
[Galaxy Note II Android Development] woodat:
I can confirm I'm using a former pixi case and did have the polarity correct (tested a dozen times to confirm. last thing I would want is to blow the phone a week into its existence)
[Galaxy Note II Android Development] Ryan_G:
Oh, third US Note to fail to work perhaps mentioned before its currently disabled by fw.

What voltage are you getting out of the pixi case on the touchstone (on its own), it should be about 5.6V?
[Galaxy Note II Android Development] woodat:
5.6v, so don't think it's the 3v-too-low thing switt was having.
[Galaxy Note II Android Development] Ryan_G:
The only next thing to try is flashing a different kernel to see if that activates it, but apart from that sorry i'm not so sure myself.
[Galaxy Note II Android Development] rickhuizinga:
NOGO on T-Mobile version

Yep, I've confirmed polarity and voltage with a multi-meter. I tested first with power from a USB cable to eliminate any possibility of problems with the inductive coil and circuitry. I have experience from doing this mod to my Galaxy Nexus by connecting the coil to the POGO pins on that phone.
[Galaxy Note II Android Development] switt:
Just for those curious, the premade touchstone backcovers for the S3 are selling on ebay for $30 bucks while the Note 2 version is $70+. This may be because of the NFC antenna.... At that price I'd wait for the official version.
[Galaxy Note II Android Development] Crushader:
$70 is the expensive ones, you could get one for about $45-50 on eBay
[Galaxy Note II Android Development] BDawgTrap:
CDMA?

I am assuming that since my Sprint Galaxy note 2 Does not have anything in the area where those wires would touch the phone, that i cannot do this mod. Does anyone know about the CDMA versions?