solder points for inductive mod - T-Mobile Samsung Galaxy S II SGH-T989

I am looking for the points in need to solder the wire at.
I am looking for something similar to this:
http://forum.xda-developers.com/showthread.php?t=1557923
If you look at his third picture he soldered it to a resistor because he thought it was easier that way. I would prefer the same thing. Unfortunately this is the guts of an ATT S2 and it seems dif than our tmobile one.
If someone could provide this with a nice pic pointing out the spot that would be great!
Thanks.

now i dont know about any solder points but what i did was to remove the back pannel and exposed the the carger port which is connnected to the usb port..then i went to my local hobby shop (here in the midwest i went to hobby lobby) and $6.99 later i purchased copper tape. what i had done was to look at the battery which is labled where the positive and negitive terminals and laid the copper strips accordingly, now on the other side i made sure that the inductive coil was also in line so that when i placed the battery cover on the back of the unit it will touch the copper tace lines. All i have left is to see if if the touchstone works ( i still have yet to purchase that...) and it will be complete. Now also i have the verision galaxy nexus extended battery installed and some how it all fits. once i have figured out how to get the pictures to show up from my flicker account i will repost them.....heres some quickie links (backdoor) http://goo.gl/6a4YY when i get my other camera back i will post a pic of the inside with battery

I am sorry but the charger port that is linked tot he USB port?
Not sure what you mean. Can you please clarify?

please forgive the neebie question what you are trying to do....what is the purpose.
Thanks for your reply in advance.

yepvegas said:
please forgive the neebie question what you are trying to do....what is the purpose.
Thanks for your reply in advance.
Click to expand...
Click to collapse
As the link in my original post says basically i want a wireless charging system called inductive charging.
Something similiar to this too that i found on the forum:
http://forum.xda-developers.com/showpost.php?p=26443496&postcount=34
I want to take the wireless charger of a palm pre and modify it to work with my S2.
I need to take the charging coil and preferably solder it to the point on the S2 board where the charging takes place though the USB plug.
The guy in second link basically linked it to the battery contacts, i am not sure how safe that is since it bypasses most of the resistors and charging components of the board.
So hoping someone can help point out where i can do the positive and negative charging contact points on the board.

Awesome! found what i needed here. Will post when i do my similar mod.
http://forum.xda-developers.com/showpost.php?p=26610417&postcount=40

Related

Wireless charging hack for HTC Desire

Hi all.
Im hoping someone can help me out.
In the process of building the wireless charging hack for the htc desire and the prototype works fine.
However at the moment i have connected the induction coil circuit to a micro usb plug which then plugs into the desire. This is an ugly solution!
I would rather solder the induction coil circuit straight to the circuit board but am having trouble identifying where to connect to.
Has anyone looked into this and able to show me a +5v solder point on the board near the micro usb socket?
Appreciate the help.
Hi all.
Sat down with my multimeter and the desire in several pieces! Lol.
Finally found the contact points on the main board for the micro usb power.
Have now attached the induction coil to the phone main board and slipped the back cover back on.
Now I have a a desire with wireless charging using the palm touchstone but still retaining the ability to charge via the micro usb if needed!
I love the desire so much! is there nothing you cant do?
tanv28 said:
Hi all.
Sat down with my multimeter and the desire in several pieces! Lol.
Finally found the contact points on the main board for the micro usb power.
Have now attached the induction coil to the phone main board and slipped the back cover back on.
Now I have a a desire with wireless charging using the palm touchstone but still retaining the ability to charge via the micro usb if needed!
I love the desire so much! is there nothing you cant do?
Click to expand...
Click to collapse
You going to post some pictures of that ???
Pics
duryard said:
You going to post some pictures of that ???
Click to expand...
Click to collapse
Good idea!
I spent ages trying to build a slim line micro-usb plug that could easily plug in and out if I needed to charge away from a touchstone but it was not very pretty and in my frustration I took apart the phone trying to find a points on the board instead! Initially I was planning on soldering to the micro usb +5v pin but that was way to hard so instead I searched for a contact on the pcb and eventually found one.
From the outside, the phone doesn't look any different from any other desire which I prefer.
Here are some pics. I can't take pics of the internals as I've put it all back together now and don't fancy the risk of breaking the tiny wires!
Attached some pics though as requested.
Nice project
Sent from my HTC Desire using XDA App
hi , i was thinking of doing this , when i got my phone apart i noticed two holes in the plastic that covers the microusb with two gold contact underneath, are these ground and 5+ i would check but my multi meter is bust
Hi,
this project is great and I also want to build this.
Could you please indicate the appropriate contacts which you used on one of these pictures:
http://blog.afkbio.de/index.php/uncategorized/anleitung-fur-displaytausch-bei-htc-desire-teil-3/
Did the copper coil together with the PCB (there is a PCB needed, I guess) easily fit into the HTC Desire casing? I tried to fit 5 sheets of paper there but couldn't close the case afterwards.
Do you have any more details? Will the Desire hold on the Touchstone or did you add magnets somewhere?
Hi.
Regarding the contacts, I used the 0v of the microusb socket.
The part of the pcb i soldered the +v to is not shown in those pics but if you look at pic 7, there is a square contact on the hidden side of the pcb connected to the microusb socket at the bottom of the phone. That is what i used.
I found that the case fits on fine and the phone is held on ok to the touchstone without any additional magnets but maybe that could be strengthened by thinning down the backcase a little.
i hope that makes sense. very hard to describe without pictures! i wish i had taken some when i did the mod!
I asked because I was afraid that I would need a "bigger" back cover as used by some extended batteries for the Desire. So you just extracted the coil from the Pal Pre backcover together with the board and put it on top of the regular Desire battery?
mikey887 said:
hi , i was thinking of doing this , when i got my phone apart i noticed two holes in the plastic that covers the microusb with two gold contact underneath, are these ground and 5+ i would check but my multi meter is bust
Click to expand...
Click to collapse
If you are talking about the ones to the left of the battery (the only ones i could find) thats +2.6V
Does it work through a case? Such as otterbox commuter?
con247 said:
Does it work through a case? Such as otterbox commuter?
Click to expand...
Click to collapse
I'll find out tonight, i'm going to destroy a powermatt cube and give this mod a shot.
Ok, so now I got my hands on a backplate and a touchstone and already disassembled the stuff.
The point is that I still need to know where to solder the 5V. How can I measure the various golden points? I have a multimeter, but where do I probe the black (mass) pin and where the red one (sample)???
I'm a little confused.

Wireless charging mod.

I cannot wait for the official galaxy S3 wireless charging kit to come out.
I got inspired by the Galaxy mod that was done by using parts from a Palm Touchstone cover.
ww.qianqin.de/2011/09/28/high-waf-inductive-charging-mod/
I am pretty sure, that I don't need to do an intrusive operation as the one in the link - I believe that Samsung made pins ready for it under the cover.
Does anyone know what the two 'pins' that are exposed to the left of the battery are for?
Thanks!
There are countless threads regarding the "pins", wireless charging kits, and that mod.
I have a touchstone. And a back, and would like to see if anyone has applied this to the S3 and made it work
Sent from my GT-I9300 using xda premium
I have a feeling the wireless charging module will interact somehow with the two pins next to the battery. I was planning on attempting this mod using these pins but without a multimeter i am unable to tell whether these pins can be used and which way round to wire them up. If anyone can assist i would be grateful.
BungeBash said:
There are countless threads regarding the "pins", wireless charging kits, and that mod.
Click to expand...
Click to collapse
Yes. Countless threads about the mod for the Galaxy S, but I haven't been able to find anything about pins on the Galaxy SIII.
- Maybe I'm just bad at searching, believe me I have tried!
I also would love to know if and how someone gets their sgs3 working with the palm touchstone! Hope it is not too difficult!
pcyyijb said:
I have a feeling the wireless charging module will interact somehow with the two pins next to the battery. I was planning on attempting this mod using these pins but without a multimeter i am unable to tell whether these pins can be used and which way round to wire them up. If anyone can assist i would be grateful.
Click to expand...
Click to collapse
I have finally managed to find a page that claimt that the two pins next to the battery indeed are for wireless charging.
ww.trustedreviews.com/samsung-galaxy-s3_Mobile-Phone_review
Only problem is, I don't know Trusted Reviews - so I don't know how 'Trusted' they are?
All I need now is to find out which pin is 0V and which is +5V. (I'm pretty sure that the current is the same as the Palm cover provides.
Every accessories are always made for on pin, hdmi,wireless kit etc. Always Samsung market tactics.
I wish you'll do it.
Upper pin is plus, lower minus - and it has also be done!
http://www.android-hilfe.de/zubehoe...-samsung-galaxy-s3-ohne-kabel-aufladen-6.html
I'm also trying to do that, hopefully it works
N23 said:
Upper pin is plus, lower minus - and it has also be done!
http://www.android-hilfe.de/zubehoe...-samsung-galaxy-s3-ohne-kabel-aufladen-6.html
I'm also trying to do that, hopefully it works
Click to expand...
Click to collapse
Yes it works, it will be a little slower, im only seeing 450mah going in as opposed to about 1000mah
But that doesnt matter in the slightest as i mostly charge overnight
that is great news! That does not look too difficult and it looks as NFC is not touched. Just the translation is difficult and not knowing what samsung wireless charging is about.
I also wonder how snug the fit is after adding the magnets from the touchstone back cover?
I will post details soon when i am back home
Sent from my GT-I9300 using xda premium
I'm still waiting for my touchstone and palm battery cover to arrive...
I found this! He looks like he did a great job. I am just curious if he had to solder anything to the phone?
http://www.youtube.com/watch?v=uAqP3T_Mbzg
yes he did, i'm gonna try it with just tape - his solder blobs seems to be huge and because of the the cover makes this bulge... maybe then it will fit perfectly
the samsung wireless charger looks nice but i like the idea with the magnets of the touchstone!
please post pictures and a possible video. This is so interesting!
i'll do as soon i get the touchstone kit and have some spare time to do this (hopefully on sunday...)
what happens when you place an induction charging compatible device on an induction cooking range? Will it charge the battery, or will it overload the circuitry and destroy the phone\battery?
I wonder what happens when you plug in the phone with usb while it's inductively charging.
Zabalba said:
I wonder what happens when you plug in the phone with usb while it's inductively charging.
Click to expand...
Click to collapse
I would think they would work together or one would be disabled by the other. Don't think they would allow both if it could cause damage.
Sent from my SPH-D710 using Tapatalk 2

[Q] Adding Inductive Charging?

In your opinion, how hard would it be to modify a case/back panel for the Glide, so that it has inductive charging support? I just saw a video online of someone internalizing an iPhone 4/4S charger, with only slight structural modifications (it had the appearance of no case on the outside), and was thinking that I might be able to do it to my Glide. At the moment, I am using a Body Glove case, made of rubber-coated plastic (the only one AT&T sells/sold for the Glide), and my best guess is that the case is about 3mm in thickness. I am looking for no actual phone modifications here (except for wiring the case to the battery, and maybe a modified back cover), so does anyone have any thoughts/ideas/suggestions?
Interesting. There is a company selling those inductive charging mats. I believe there is a connector that plugs to our phone (micro USB) to work with it. You could buy that and try to modify the phone back panel and a case to add the necessary hardware.
Sent from my SGH-I927 using xda app-developers app
---------- Post added at 07:30 PM ---------- Previous post was at 07:25 PM ----------
The companies name is Duracell powermatt.
Sent from my SGH-I927 using xda app-developers app
I saw this, and figured that's what I was going to use. However, It looks as if the case for most phones adds quite a bit of thickness. I looked at another guide, which involved ripping up a Palm Pre back, soldering some things together, and using the Touchstone mat. As for whether or not that would work with a Powermat, I am not sure.
a_p3rson said:
I saw this, and figured that's what I was going to use. However, It looks as if the case for most phones adds quite a bit of thickness. I looked at another guide, which involved ripping up a Palm Pre back, soldering some things together, and using the Touchstone mat. As for whether or not that would work with a Powermat, I am not sure.
Click to expand...
Click to collapse
I've seen that guide, it was for the galaxy s3.
It looks like that phone has the two charging pins below the back cover; looking at the glide, I can't see them.
I fear we would need circuitry or at least more complicated wiring to make it work.
The one I saw was for the original Galaxy S. You may have seen a different one. The video I saw showed him wiring some things directly to the battery, if I remember correctly.
any progress
Hey there!
I found this thread as THE only one where someone imagining about the glide having the possibility to charge inductively.
any new info about it?
@a_p3rson: did you find a way to do it?
I would love to see it becoming true..
best regards
jay
So far, the best chance I've seen was using the induction sticker on the back for the Palm (pre I believe), and wiring it to the USB port. I think that would work pretty well, though I am worried with how it would affect the normal function of the USB port. If anyone wants to try it (and share the results), by all means, please do so!
EDIT: It wouldn't be possible to wire the sticker directly to the battery, right? Of course, without causing overcharging/overheating/general harm/etc. to the battery or any part of it?
just throw it out there i have a extended battery from amazon it is about twice as thick as stock batter new back cover has large empty space between camera and batter pack i mean could put flash drive with room to spare in there would be easy to add some new hardware in there if need be for you power matt bought mine of amaxon for 11.00
og anarchy said:
just throw it out there i have a extended battery from amazon it is about twice as thick as stock batter new back cover has large empty space between camera and batter pack i mean could put flash drive with room to spare in there would be easy to add some new hardware in there if need be for you power matt bought mine of amaxon for 11.00
Click to expand...
Click to collapse
I seem to remember the sticker on the Pre being really thin - like paper thin. Plus, I really am against cosmetic things like that (e.g. large back, extended battery), so an extended back shouldn't be needed.
However, I do know that the guide that I found (for the Galaxy S) said that it was possible by just wiring the sticker to the charging ports in the USB connector. The only worry I have is if the phone's USB communication would be affected at all.
If it is possible to just directly wire into the charging ports, there appears to be an easily removable panel directly above the microusb port that would presumably give access to it. I'm at work right now, so I can't exactly check, just puttin it out there.
Sent from my SGH-I927 using xda premium
Tyfighter said:
If it is possible to just directly wire into the charging ports, there appears to be an easily removable panel directly above the microusb port that would presumably give access to it. I'm at work right now, so I can't exactly check, just puttin it out there.
Sent from my SGH-I927 using xda premium
Click to expand...
Click to collapse
Did you ever see if it was possible to hook the induction sticker to the USB port from here? I just looked at the panel, and it actually looks like there is a sticker that contains some wires going to the main board on that plate, makes me think that it could be an antenna of some sort, and that it might be kind of hard to deal with.

DIY QI Charger Question

I have opened up a cheap QI Wireless charger for a DIY project, I am looking to extend the distance between the PCB and and the coil but not sure what type of cable to use or where to get it from. I am assuming it would be copper cable of some kind? Anyone done the same or got any advice?
I was about to write that a pair of thick wires will do (something at least as thick as the ones in the coil). Then I did a search on Google and checked another thread that I happened to have opened a few seconds after yours (just checked the new threads in this section).
So check this guys contraption. I don't know if there's a difference in charging time due to the mentioned cables, but I guess he's the one with the most experience around here.
daniel_loft said:
I was about to write that a pair of thick wires will do (something at least as thick as the ones in the coil). Then I did a search on Google and checked another thread that I happened to have opened a few seconds after yours (just checked the new threads in this section).
So check this guys contraption. I don't know if there's a difference in charging time due to the mentioned cables, but I guess he's the one with the most experience around here.
Click to expand...
Click to collapse
Thanks for the reply. That thread is where I got my inspiration from and you may notice that is it only back near the top of the forum because I asked my question there too shortly before starting this topic.
Just be careful where you put it, not to have a too thick panel between the coil and the phone. It will reduce the charging efficiency.

no battery mod - different curcuit?

I'm trying to remove the battery from my N7 2013 LTE but the circuit looks different than in all the guides.
I found this instructions on another forum, but can't really tell what I should do.
n7carputer.freeforums.net/post/212/thread
It is based on BQ27541, to get 100% instead 0% you have to short protection circuit after current measuring resistor:
i1380.photobucket.com/albums/ah199/elektro255/DSC05686_zpsawhvyqzy.jpg
Click to expand...
Click to collapse
Thanks!
(Can't post links yet and my english sucks, sorry.)
sezz said:
I'm trying to remove the battery from my N7 2013 LTE but the circuit looks different than in all the guides. I found this instructions on another forum, but can't really tell what I should do.
n7carputer.freeforums.net/post/212/thread
Thanks! (Can't post links yet and my english sucks, sorry.)
Click to expand...
Click to collapse
Your battery control PCB may look different but the principle is still the same: you have to bypass the protection MOSFET. For example on your linked picture just solder a short cable between the black battery cable (here marked "B-") and the pair of black cables going out to N7 motherboard. I attached a picture of my mod on a different PCB.
Incidentally, the bypass is required for 5V power supply but if you use around 4V then you may not need the extra cable at all.
k23m said:
Your battery control PCB may look different but the principle is still the same: you have to bypass the protection MOSFET. For example on your linked picture just solder a short cable between the black battery cable (here marked "B-") and the pair of black cables going out to N7 motherboard. I attached a picture of my mod on a different PCB.
Incidentally, the bypass is required for 5V power supply but if you use around 4V then you may not need the extra cable at all.
Click to expand...
Click to collapse
thanks, so what the guy on the other forum posted is just another way to do it?
i'll try and report back :good:
thank you @k23m, i think it works - it shows 100% and 25.8°c
i.imgur.com/RZfOUAa.png

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