So I successfully implemented inductive charging into my Diztronic case so I decided to buy a few NFC tags to launch specific things when on certain Touchstones. Here I come to find out that when I put the NFC tag onto the touchstone the phone wont charge AND it won't detect the NFC tag. The tag works fine as long as it's not on the touchstone, and the touchstone works fine without the tag on it. Has anyone else encountered this issue and/or found a solution to NFC tagging touchstones?
On a side note, what is everyone's favorite NFC writer app? I'm currently using Samsung's new TacTile app and it seems to work pretty well (besides on my Touchstones...)
Some people have reported some strange NFC behavior when using inductive chargers, often when the charging coil sits right on top of the battery. The only possible fix would be to nudge the charging coil up so it doesn't sit over the battery as much.
ldp_frog said:
So I successfully implemented inductive charging into my Diztronic case so I decided to buy a few NFC tags to launch specific things when on certain Touchstones. Here I come to find out that when I put the NFC tag onto the touchstone the phone wont charge AND it won't detect the NFC tag. The tag works fine as long as it's not on the touchstone, and the touchstone works fine without the tag on it. Has anyone else encountered this issue and/or found a solution to NFC tagging touchstones?
On a side note, what is everyone's favorite NFC writer app? I'm currently using Samsung's new TacTile app and it seems to work pretty well (besides on my Touchstones...)
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Where do u buy NFC tags I am interested in getting my self for my car dock
Sent from my Galaxy Nexus using xda app-developers app
Bfitz26 said:
Where do u buy NFC tags I am interested in getting my self for my car dock
Sent from my Galaxy Nexus using xda app-developers app
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Just go into Google Shopper and look up NFC tags. The Sony Xperia one's look cool and are my favorite.
ldp_frog said:
So I successfully implemented inductive charging into my Diztronic case so I decided to buy a few NFC tags to launch specific things when on certain Touchstones. Here I come to find out that when I put the NFC tag onto the touchstone the phone wont charge AND it won't detect the NFC tag. The tag works fine as long as it's not on the touchstone, and the touchstone works fine without the tag on it. Has anyone else encountered this issue and/or found a solution to NFC tagging touchstones?
On a side note, what is everyone's favorite NFC writer app? I'm currently using Samsung's new TacTile app and it seems to work pretty well (besides on my Touchstones...)
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because the magnet of TouchStone may disturb the antenna of NFC .
see my solution: http://forum.xda-developers.com/showthread.php?p=37290004#post37290004
I have a Samsung Galaxy S3 which depends on the battery with a built in NFC antenna for NFC to work. I am currently using a 3rd party battery that doesn't have an NFC antenna. I would love if there is an option to somehow add an antenna externally, but not through the use of a microSD card if possible. Does anyone have any suggestions? Thanks!
Doubt it. NFC isn't just a matter of adding an antenna afaik.
pcorlatan said:
I have a Samsung Galaxy S3 which depends on the battery with a built in NFC antenna for NFC to work. I am currently using a 3rd party battery that doesn't have an NFC antenna. I would love if there is an option to somehow add an antenna externally, but not through the use of a microSD card if possible. Does anyone have any suggestions? Thanks!
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It would be really be more feasible to just buy a different battery with NFC support. Trying to add an NFC antenna to the phone would be a lot more work than it's worth.
JunyuT. said:
Doubt it. NFC isn't just a matter of adding an antenna afaik.
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I assumed the rest of the required hardware is built into the phone and just the antenna in the battery, but then again the antenna probably needs to receive power so I can see how that would be an issue. Thanks for your input.
TWO515TY said:
It would be really be more feasible to just buy a different battery with NFC support. Trying to add an NFC antenna to the phone would be a lot more work than it's worth.
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Okay thanks, it's not too big of a deal to throw in an NFC battery when I need the functionality.
S3 need a antenna?
Sent from my GT-I9300 using xda app-developers app
tuansiro said:
S3 need a antenna?
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Just as much as any NFC-enabled phone does... You know that the antenna is embedded in the inside of the phone, right?
Damastus said:
Just as much as any NFC-enabled phone does... You know that the antenna is embedded in the inside of the phone, right?
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Actually on the SGS3 the NFC antenna is in the battery, not the phone.
Sent from my Transformer using Tapatalk 2
Actually I knew that since it was stated in the first post. I consider that still inside the phone.
I thought the user I answered to imagined something like this here as an nfc antenna.
While technically yes, you could make an antenna out of say aluminium foil if you could figure how to cut it so you end up with a tuned antenna, then connect it to the correct pin on the battery connector, I think any sane person would just stick an NFC battery in.
I think they put the antenna in the battery because it's up close to the back of the case. That would also keep it well away from the other antennas that I doubt would like the power pulses that NFC puts out while it's polling.
Oh and Damastus, that picture it hilarious.
I've done the wireless charging mod using Palm Pixi guts. That thin coil of wire is enough to break NFC communication, depending on where it's put. NFC has a VERY short range, so I'm sure it's in the battery to put it as close to potential NFC chips you want to read, and to minimize anything else getting between the antenna & chip (like cases, batteries, etc.)
TWO515TY said:
It would be really be more feasible to just buy a different battery with NFC support. Trying to add an NFC antenna to the phone would be a lot more work than it's worth.
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On the Nexus S, the antenna is built into the phone's backplate.
In theory, you could buy a Nexus S back, remove that antenna, and put it on the inside of your phone.
Run fine wires from the phone's NFC antenna connections to the antenna, and it might just work.
I'd expect reception to be lousy, since you'll detune the antenna by trying to connect it. This also assumes that the NFC circuitry is in the phone, and the battery has only the antenna.
sysadmn said:
On the Nexus S, the antenna is built into the phone's backplate.
In theory, you could buy a Nexus S back, remove that antenna, and put it on the inside of your phone.
Run fine wires from the phone's NFC antenna connections to the antenna, and it might just work.
I'd expect reception to be lousy, since you'll detune the antenna by trying to connect it. This also assumes that the NFC circuitry is in the phone, and the battery has only the antenna.
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Or..buy a battery with NFC support..
Sent from my Galaxy Nexus using xda premium
I got my extended battery (4300mAh) with NFC support from a Chinese manufacturer for only $15. I know you have to be careful with those, but this one seemed legit so I took a chance and it works great - last forever - AND has NFC. Here's the one I got: http://www.aliexpress.com/item/NFC-Extended-cell-phone-battery-with-cover-for-Samsung-Galaxy-S3-I9300-4300mAh/577969392.html
just take apart an OEM battery and start playing with it. My guess is what you want to do is VERY doable.
If I recall correctly, the Verizon SGS3 inductive charging back cover has the NFC element on the cover, not the battery.
Sent from my SPH-L710 using xda premium
nerys71 said:
just take apart an OEM battery and start playing with it. My guess is what you want to do is VERY doable.
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I thought about that but I don't want to waste a perfectly good battery just to try, although it's tempting.
Mutiny32 said:
If I recall correctly, the Verizon SGS3 inductive charging back cover has the NFC element on the cover, not the battery.
Sent from my SPH-L710 using xda premium
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I think you're right, however I'm pretty sure that's what the extra two pins under the battery are for. These pins are only on the Verizon version of the GS3 though, so it wouldn't work for my T-Mobile GS3. Thanks for the suggestion though.
buy a cheapy chinese battery that has NFC and "have at it"
As far as I have known, there is a type of NFC antenna available in the market that can be stuck to the back cover of your Galaxy S3. In this way, you can take full advantages of NFC functions of the Samsung mobile with an alternative mobile battery. However, it seems that most providers like Sunshine Good Electronics Company only do wholesales business on platforms like Globe Resources. You can search it on e-bay, maybe you will be surprised to find on retail seller.
Hey, I have a fake battery bought from eBay that looks exactly like the original one but it is fake.
The problem is that it doesn't have NFC support. NFC works fine if the original battery is inside.
Since the battery just acts as NFC antenna, maybe it is possible to out something conductive to touch the correct contacts and NFC will work.
Did anyone ever try that? Does anyone know how to do that?
My Gnexi said:
Hey, I have a fake battery bought from eBay that looks exactly like the original one but it is fake.
The problem is that it doesn't have NFC support. NFC works fine if the original battery is inside.
Since the battery just acts as NFC antenna, maybe it is possible to out something conductive to touch the correct contacts and NFC will work.
Did anyone ever try that? Does anyone know how to do that?
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I searched around, doesn't seem like nothing what you are suggesting has been done; Also, no hits on Google;
I would advise you to simply buy a NFC-capable battery. Messing with li-on batteries is not a great idea, IMO.
But that's not FUN
I'm not going to mess with the internals of the battery, just create an antenna that happens to be glued to the sticker of the antenna but could really be anywhere else.
Update: I did it!!!!!!!!!!!
Pins 1&3 are power, pins 2&4 are NFC (1 is leftmost pin)
I connected a bit of copper wire to each of the NFC pins, and connected them using coil (wrapped 4 or 5 times).
It reads NFC tags very well, the only problem now is I can't close the back cover because of the giant coil. I'll try to find a solution to that and upload pictures (or video), because as we all know "pictures or it didn't happen".
Update: The project FAILED.
I tried to connect the two NFC pins using a coil. When the coil was away from the phone, it worked very well. When the coil was on the phone, it didn't work. Since I wanted to stick it on the battery and be able to close the cover, I must say it didn't and can't work.
The fake battery is blocking NFC signal. If you put the good battery in and then put a tag -> NFC success sound.
If you put good battery in and a tag+fake battery over it -> No sound. Take the battery-> Success sound.
That concludes our experiment.
Real Samsung batteries with NFC are available on Amazon for $8.
+expensive international shipping. I'll stay with one battery that does NFC and one that doesn't, until my next phone.
I'm considering attempting to remove the antenna sticker from my old battery, stick it onto my new third-party battery, and connect the leads to it's pads. Will update if it goes well. Or if it doesn't.
---------- Post added at 12:37 PM ---------- Previous post was at 12:01 PM ----------
Welp, that didn't work.
The nfc sticker on the stock battery seems to fall apart if you try to peel it off.
I have a push button switch that simply turns a battery powered circuit on or off, I'd like to have some security so only certain people can turn it on. Is it possible to replace this push button with some kind of NFC or RFID switch, activated by a phone?
Thanks.
I don't know of an out-of-the-box solution for this.
Maybe an NFC door lock (beware: most are RFID door locks which are not compatible with NFC used in phones) could be used
If you have experience with µC or don't fear the Arduino world, you could start with a cheap Arduino clone (Arduino Nano V3 compatible ~2.8EUR from Aliexpress), and a PN532 NFC/reader writer module (~12.6EUR from Aliexpress).
Id like to implement wireless charging to my z3 but i use NFC heavily so the solution zhekazheka came up with wont work for me.
http://forum.xda-developers.com/z3-compact/accessories/hassle-diy-wireless-charging-t3300011
I've found these chips on aliexpress but i cant figure out how they would be installed. I assume you must remove the rear panel.
Would removing the rear panel destroy any waterproofing upon thorough reassembly?
http://www.ebay.com/itm/For-Sony-Xp...C-Wireless-Charging-Sticker-New-/191655739546
http://www.aliexpress.com/store/pro...Charging-Sticker-NEW/1555539_32301299244.html
http://www.aliexpress.com/item/5pcs...48&btsid=5036d756-27a8-4e73-869f-c4dc44d3e1e2
Some of these appear to connect to where the NFC antenna connects, which doesn't make sense for charging.
Here is a link to the teardown
https://www.ifixit.com/Teardown/Sony+Xperia+Z3+Compact+Teardown/35454
https://d3nevzfk7ii3be.cloudfront.net/igi/1w3UdqRLGko3Bl2H.huge
https://d3nevzfk7ii3be.cloudfront.net/igi/K2ibMbqGrXoJBlmH.medium
Any ideas?
Why not try to find a wireless charger receiver with a usb tail long enough so that it could sit below the nfc receiver? The nfc seems to activate anywhere in the top 8 cm of the back of the phone. I don't there's a wireless receiver that could completely cover that much area.
I tried looking for one but i couldn't find it. it would have to be pretty specific to find an extended right angle sticker with the plug in the correct orientation