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  1. Thread Author  Thread Author    #226  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by ellesshoo View Post
    I don't think its your coil. I have applied power to the contacts using pogo pins as well and the delay is the same. I have a GSM nexus running AOKP (4.0.3 based). I tried the contacts on my wife's totally stock LTE nexus and it charges instantly. I put my GSM nexus back to stock and it charged instantly. I rerooted and flashed AOKP again and again a delay before charging. I think the delay may be software based.
    Codename here too. You may be on to something!
  2. Thread Author  Thread Author    #227  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by Mburris View Post
    RE: GSM Gnex

    First off, great tutorial ohiomoto. I've already ordered all the parts to do two phones and have 4 docks.

    That being said, I have a GSM Galaxy Nexus and I'm not too sure how well this will fit under the standard cover that comes with the GSM version.

    For a test I cut a very thin piece of plastic (From the side of one of those "impossible to open without scissors" packages) and was unable to close the back cover all the way with it underneath.

    There might be a good amount of sanding to get the back cover thin enough to accommodate.

    In the end what I may do is attach the inductive coil to a silicon sleeve and use the pogo dock pins for the connection.
    You may be surprised. There isn't any room under the CDMA cover either, but the covers are pretty flexible. When you put the magnets iand the cover is snapped into place it creates most of the space needed for the coil. Give it a try and see what happens.
  3. #228  
    barchamb's Avatar

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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by barchamb View Post
    Good point. I'm unlocked and rooted, but I have not flashed any custom ROMS or kernels yet, so I'm still running stock 4.0.2, which charges immediately. I'll have to flash something with 4.0.3 or 4.0.4 and see what happens and report back...
    Yep. I just installed AOKP Milestone 3 (which is 4.0.3), and sure enough, it takes 10 seconds for me to start charging now. Boo. So, now the question is, do I want to stay on the ROM for the awesome extras it has and deal with 10 second charging, or go back to 4.0.2 just so it charges immediately? I think I'll stay with the ROM. :-) Question is, should I stay on AOKP or go to Codename? :-)
  4. #229  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Ok so theres 23 pages of crap here that I am not going to read through, so apologies if this is redundant. But I performed this modificiation and I have some technical data to report.

    I tested several different configurations:
    1. inductive coil inside the phone under battery cover
    2. inductive coil inside the phone under the battery cover inside a diztronic rubber case
    3. finally inductive coil outside of phone inside diztronic case.


    Bottom line, the touchstone powered with its 1A charger or even a 3rd party 700mA charger charges the GNex the exact same. The field it generates is more than strong enough to penetrate a rubber case and the battery cover with no loss in charging current.

    Measured charging current, consistent across all trials: 430mA. The GNex simply does not want any larger than that though the pogo pins in this configuration.


    So feel free use whatever configuration you want but do not expect to see a charge rate greater than 430mA.

    I chose to put the coil on the inside of the case allowing me to use several Neodymium N52 Magnets to very securely hold the Nexus to the Touchstone. The standard battery cover would not close when I had inside the phone.
  5. #230  
    omullins's Avatar

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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Well, I just tried getting this started on my GSM GN... using the magnets in the OP, got those and the coil in, tested the cover... top and bottom snap in, but sides are bulging out...
  6. Thread Author  Thread Author    #231  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    You have to press the sides in with a little force, but they should hold. You could also try flipping the magnets so that they are closer to the coil. This should give you a little more flex at the edges of the cover.
  7. #232  
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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by eventnick View Post
    Ok so theres 23 pages of crap here that I am not going to read through, so apologies if this is redundant. But I performed this modificiation and I have some technical data to report.

    I tested several different configurations:
    1. inductive coil inside the phone under battery cover
    2. inductive coil inside the phone under the battery cover inside a diztronic rubber case
    3. finally inductive coil outside of phone inside diztronic case.


    Bottom line, the touchstone powered with its 1A charger or even a 3rd party 700mA charger charges the GNex the exact same. The field it generates is more than strong enough to penetrate a rubber case and the battery cover with no loss in charging current.

    Measured charging current, consistent across all trials: 430mA. The GNex simply does not want any larger than that though the pogo pins in this configuration.


    So feel free use whatever configuration you want but do not expect to see a charge rate greater than 430mA.

    I chose to put the coil on the inside of the case allowing me to use several Neodymium N52 Magnets to very securely hold the Nexus to the Touchstone. The standard battery cover would not close when I had inside the phone.
    One thing that I have been wondering about is if you plug in a USB cable that has the data pins shorted into the phone while it is on the Touchstone, will that allow the battery to accept more current?
  8. Thread Author  Thread Author    #233  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    I was wondering the same thing. I've seen a touchstone mod that uses the USB port that did that. I also wonder if the second ground (middle pogo pin) might also have an effect on how the GN handles current.
  9. #234  
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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by ohiomoto View Post
    You have to press the sides in with a little force, but they should hold. You could also try flipping the magnets so that they are closer to the coil. This should give you a little more flex at the edges of the cover.
    I'm definitely giving it some force, got one side in, but the other just will not hold. That bottom piece of the coil is pretty thick.
  10. #235  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by omullins View Post
    I'm definitely giving it some force, got one side in, but the other just will not hold. That bottom piece of the coil is pretty thick.
    I just finished applying this mod to my GSM GNex with standard battery cover and am finding that although the cover does just barely snap in to place, there is a slight bulge near the coil and a gap between the edge of the cover and the plastic frame.

    I've decided to order the extended cover because the poor fit the standard cover is bothering me.
  11. #236  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by Rickhuizinga View Post
    I've decided to order the extended cover because the poor fit the standard cover is bothering me.
    This is what I ended up doing. Using the extended cover with the standard battery. Super tight with no pressure to pop off. The extended battery did fit but if I handled the phone even a bit rough the modded back cover would pop off.

    To the discussion of the amps versus volts. What would be the easiest way to test my current?
  12. #237  

    Talking Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Just wanted to chime in with another success story
    My configuration is:
    -charging coil outside the phone, on the inside of a diztronic case.
    -Copper tape traces to the edge of the case
    -I extended the pogo contacts with copper tape, scratched a small hole in the tape through to the pogo contact, and put a small bit of solder on the copper tape. This makes the tape function as a solder pad, and there should be minimal solder on the pin itself. Should be very easy to reverse if needed.

    Connection is pretty bombproof so far, and I love the convenience of this mod. Mine does charge pretty slowly this way, but with Pandora streaming bluetooth audio, and GPS navigation running, I get a percent charge every 4 or 5 minutes. Good enough for car trips.

    NFC still works perfectly with the coil mounted as high as possible in the case.
    The compass is severely impacted, but I can take the case off whenever I need an accurate compass.

    Thanks for the instructions and all the feedback on this thread. If anyone is nervous about this, remember, it is an open source phone, hack it

    EDIT:
    Added some pictures and procedures

    Materials:
    Palm touchstone and Pre battery back
    Electrical tape (clear tape used in the pictures below for illustration purposes)
    Copper tape with conductive adhesive (it really does make this go easier to get conductive adhesive type.)
    Eyeglass screwdriver
    Solder and soldering iron

    1. Removed the palm coil per ohiomoto's instructions
    2. Placed stronger magnets inside the diztronic case, and aligned them by placing the diztronic case on the touchstone. Taped magnets in place
    3. Used a multimeter to align the coil onto the inside of the case, finding the spot where I saw a consistent 5.6 volts. Taped the coil in place
    4. Soldered 2 pieces of copper tape to the leads on the coil. Attached additional tape pieces to direct current to either side of the pogo pin cutout in the side of the case. Put electrical tape over the copper tape on the back of the case. Leave the side of the case untaped.
    Fig1
    Fig2
    5. Attached 2 pieces of copper tape over the top and bottom pogo pin connector. I angled these diagonally to meet up with the copper tape on the inside of the case.
    Fig3
    6. Place phone in case
    7. To test, I used a eyeglass screwdriver to press the tape into the pogo pin connector as much as possible. At this point, hopefully the phone will charge. Mine was fine like this for a couple days, but the connection would start to get flaky. Pressing the tape into the pogo connector again usually establishes a good connection again.
    8. If step 7 tests positive, and you are happy with the results, a couple drops of solder over the pogo pin connectors will make the connection to the phone much more stable. Use the eyeglass screwdriver to etch away some of the copper tape over the pogo pin connector. You should see the gold connector underneath. Put a tiny ammount of solder on this hole, connecting the pogo connector with the top layer of the copper tape. Do this for both top and bottom pins. Fig3 above is the final result.

    NOTES:
    -The adhesive backed tape seems to have plenty of contact when attached to other pieces of tape, but the surface area of the pogo connectors is not enough to provide a stable connection
    -I added additional magnets on top of the magnets in step 2, to increase its adherence to the mount. Your magnets may be stronger. Mine were cheap 1/32" thick neodynium magnets I found on amazon. Pretty powerful, but the weight of the phone and the case was a little much. Doubling the magnets makes it stronger.
    -Figures above are taped with clear packing tape. I have since retaped everything with electrical tape.
    -I know ohiomoto's instructions were for a no solder installation. My instructions do not require soldering, but it is advised unless you want to constantly repair the connections. Do what I did, try it for a few days without solder to see if the charge speed and convenience works for you. Then solder only if you see that it is necessary. You can try this out without cracking your phone open.

    Once again, thank you, ohiomoto, for putting your instructions up. I am glad to see so much feedback from the community.
    Thanked by:
    ohiomoto likes this.
  13. #238  

    Default

    Quote Originally Posted by SilentWay View Post
    One thing that I have been wondering about is if you plug in a USB cable that has the data pins shorted into the phone while it is on the Touchstone, will that allow the battery to accept more current?
    Quote Originally Posted by ohiomoto View Post
    I was wondering the same thing. I've seen a touchstone mod that uses the USB port that did that. I also wonder if the second ground (middle pogo pin) might also have an effect on how the GN handles current.

    I also wondered that to myself. That is a common thing that many oems have done with their charging schemes in the past. I do not think it is the touchstone that is limiting the current though- I think its the Nexus. I can't help but wonder if that is the purpose of the 3rd pin. I may try grounding both of those pins...hopefully nothing bad will happen. I will report back either way if I feel ballsy enough to try it. Actually, I'm still within 30 days, I may add the insurance and then do it haha. Kidding, of course.
  14. #239  

    Default

    Quote Originally Posted by dano272 View Post

    To the discussion of the amps versus volts. What would be the easiest way to test my current?

    Sorry, this is one of those things where if you have to ask, you shouldn't try it. You need a firm understanding of basic electrical knowledge obtained by learning and doing measurements on things you can't damage like a bunch of resistors. I would very strongly advise you not to learn this on your $600 cell phone... if you connect things the wrong way you can short your phone. Your first lesson is V=IR and as such I=V/R and in the case that you short something I=V/R=5V/.0000001= NotSomethingYourPhoneWillLike Amps. Do not do that to your phone. Instead, refer to my post a few posts above yours: no matter your configuration the Nexus draws 430 mA - no more, no less.
  15. #240  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by eventnick View Post
    Sorry, this is one of those things where if you have to ask, you shouldn't try it.
    Fair enough.

    Quote Originally Posted by eventnick View Post
    Instead, refer to my post a few posts above yours: no matter your configuration the Nexus draws 430 mA - no more, no less.
    Maybe you can chime in then on my issue - which is that I am charging but am not seeing the same results as others here in regards to charging rate. With bluetooth streaming audio, 3G on in a good reception area, and screen off - I'm getting power drain even while on the charger. I've tested the voltage at the pogo pins while charging in the car and seems to be getting juice (I posted a pic of my results earlier in this thread). With phone idle - my setup will charge the phone to full. That is why I asked the question about testing current. Any thoughts or tips? I am running AOKP build 23 with included kernel.
  16. Thread Author  Thread Author    #241  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by bike2deth View Post
    Just wanted to chime in with another success story
    My configuration is:
    -charging coil outside the phone, on the inside of a diztronic case.
    -Copper tape traces to the edge of the case
    -I extended the pogo contacts with copper tape, scratched a small hole in the tape through to the pogo contact, and put a small bit of solder on the copper tape. This makes the tape function as a solder pad, and there should be minimal solder on the pin itself. Should be very easy to reverse if needed.

    Connection is pretty bombproof so far, and I love the convenience of this mod. Mine does charge pretty slowly this way, but with Pandora streaming bluetooth audio, and GPS navigation running, I get a percent charge every 4 or 5 minutes. Good enough for car trips.

    NFC still works perfectly with the coil mounted as high as possible in the case.
    The compass is severely impacted, but I can take the case off whenever I need an accurate compass.

    Thanks for the instructions and all the feedback on this thread. If anyone is nervous about this, remember, it is an open source phone, hack it
    Interesting setup! I'm adding this to post #3. Please update your post with pictures if you can.
  17. Thread Author  Thread Author    #242  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by eventnick View Post
    I may try grounding both of those pins...hopefully nothing bad will happen. I will report back either way if I feel ballsy enough to try it. Actually, I'm still within 30 days, I may add the insurance and then do it haha. Kidding, of course.
    I like this idea. And I like it better if you are willing to do it first! LOL
  18. #243  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Does anybody have success with NFC with the coil on? I ordered NFC tags with all the other stuff, and with the N52 magnets, I can't seem to get it to work, but if I take two of them off it works?
  19. #244  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by chessmaster24 View Post
    Does anybody have success with NFC with the coil on? I ordered NFC tags with all the other stuff, and with the N52 magnets, I can't seem to get it to work, but if I take two of them off it works?
    Yes, my NFC works.
    The magnets mess with the compass, but so far all other systems are go.

    EDIT:
    To clarify, my NFC works for google wallet purchases. I have not tested phone to phone, or with nfc tags. My guess is that those who are having problems with the NFC tags, have them placed directly on the touchstone. The coil is bullseyed right over the tag, probably causing a lot of interferece. A coil of copper makes a great Faraday cage. For that reason, I placed my coil high, so there is enough space underneath the coil for NFC to communicate. Remember, the NFC antenna is in the battery.
  20. #245  
    barchamb's Avatar

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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by chessmaster24 View Post
    Does anybody have success with NFC with the coil on? I ordered NFC tags with all the other stuff, and with the N52 magnets, I can't seem to get it to work, but if I take two of them off it works?
    My NFC tags came in today, and I definitely have an issue. I stuck one of the tags on the touchstone. If I pull the USB plug out so the touchstone is not powered, and then set my phone on the touchstone, it works every time. The phone plays a tone and the URL that I programmed on the tag pops right up. Every time.

    As soon as I plug the USB cord back in, then set the phone on the touchstone, sometimes it plays a tone, but it's a different tone, and the URL never comes up. If I leave the phone on the touchstone with the USB plugged in, then pull out the USB, the tone plays and the URL comes up.

    So, for me at least, the magnetic field generated by the touchstone seems to interfere with NFC. The coil in the battery door doesn't interfere with NFC, as I can put my phone on tags away from the touchstone (or with the touchstone unplugged) and it works every time.

    Perhaps it's the placement of the coil in the battery door? If I moved it around, perhaps I could get it to work?
  21. #246  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    I'm not sure if the coil *helps* with NFC, because I don't have it in, and even my normal NFC tags won't work, just with the magnets in, standard or extended battery.
  22. #247  

    Default

    Quote Originally Posted by barchamb View Post
    My NFC tags came in today, and I definitely have an issue. I stuck one of the tags on the touchstone. If I pull the USB plug out so the touchstone is not powered, and then set my phone on the touchstone, it works every time. The phone plays a tone and the URL that I programmed on the tag pops right up. Every time.

    As soon as I plug the USB cord back in, then set the phone on the touchstone, sometimes it plays a tone, but it's a different tone, and the URL never comes up. If I leave the phone on the touchstone with the USB plugged in, then pull out the USB, the tone plays and the URL comes up.

    So, for me at least, the magnetic field generated by the touchstone seems to interfere with NFC. The coil in the battery door doesn't interfere with NFC, as I can put my phone on tags away from the touchstone (or with the touchstone unplugged) and it works every time.

    Perhaps it's the placement of the coil in the battery door? If I moved it around, perhaps I could get it to work?
    NFC tags do not work on or in very close proximity of metallic surfaces or even "thinly coated" metallic surfaces. They do make tags that are shielded that can be used near metal but unless the tags were advertised as such they probably aren't of that variety. Maybe the cause of your issue.
  23. #248  

    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by ellesshoo View Post
    NFC tags do not work on or in very close proximity of metallic surfaces or even "thinly coated" metallic surfaces. They do make tags that are shielded that can be used near metal but unless the tags were advertised as such they probably aren't of that variety. Maybe the cause of your issue.
    It seems I have to hold my phone an exact height above the tag. Very exact.
  24. #249  
    omullins's Avatar

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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by dano272 View Post
    This is what I ended up doing. Using the extended cover with the standard battery. Super tight with no pressure to pop off. The extended battery did fit but if I handled the phone even a bit rough the modded back cover would pop off.

    To the discussion of the amps versus volts. What would be the easiest way to test my current?
    I'm really not thrilled with the idea of the extended battery door, but will consider it. My question however is, is there a GSM version of the extended door? It looks like you can pick the VZW one up cheap on eBay but I don't want a VZW door.
  25. #250  
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    Default Re: [GUIDE] Galaxy Nexus MOD for Palm Touchstone without solderin

    Quote Originally Posted by ellesshoo View Post
    NFC tags do not work on or in very close proximity of metallic surfaces or even "thinly coated" metallic surfaces. They do make tags that are shielded that can be used near metal but unless the tags were advertised as such they probably aren't of that variety. Maybe the cause of your issue.
    I would tend to agree with you, but if I turn the power off to the touchstone, the tag works every time, even though it's stuck to the metal touchstone. As soon as I power the touchstone, the tag fails. So, I have to believe the magnetic field is interfering, not the metal in the touchstone. I'll order some of the shielded tags to confirm...
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