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[GUIDE] Galaxy Nexus MOD/Palm Touchstone-No soldering on phone!!
WARNING: This mod requires you to partially disassemble your phone. By doing so you may cause damage and/or void your warranty. It it unknown what would happen if you used the USB cable while the phone is charging on the touchstone. I'm not responsible for what you do to your phone.
Just finished the mod and it was so EASY!! No permanent modifications or soldering on the phone was required and the mod can easily be reversed.
This modification allows you to charge your Galaxy Nexus on a Palm Touchstone charger in any orientation, in the car, in the office, by the bedside. Just place the phone on the Touchstone and it will charge. The phone is held in place by magnets (not yet known if this will interfere with NFC). When it's done charging, just grab it and go! The battery door is fits perfect and remains removable and because there are no wires involved there is no wear and tear on the phone's USB port which means it won't be broken when you need to root and ROM it! Ha, ha...
Note: If you don't feel comfortable taking the phone apart, you can make a nice stand by just adding the magnets to the back cover.
Razer blade and scissors
Soldering iron and solder (I promise we wont be soldering on the phone!)
Palm Touchstone Charging Dock
Palm Pre AC USB Wall Adapter + Palm PRE Charging USB 2.0 Data Cable
Palm Pre Touchstone Back Cover
Copper Foil Tape (Conductive Adhesive): 1/4 in. x 36 yds. or look HERE for more copper tape or HERE.
Rare earth magnets (optional but strongly recommended!)
Double sided tape
Note: nsurg found the magnets and tape on eBay for less than I paid. (Most of us don't need 36 yds. of copper tape.) I would also recommend calling VZW for the Palm items. If they have them they will FedEx them to you and bill your account. Might be worth the phone call if the price it right.
BEFORE YOU START!!
Please review this guide and the links:
High WAF Inductive Charging Mod -- Awesome, must see! I did two Fascinates using this guide with a slight change to the soldering point on the usb port. (You have to solder on the right side.)
Samsung Galaxy Nexus Teardown -- We only need to get to step 6. Not too difficult, but you'll need those guitar picks. I got mine for a couple of bucks at a local music store.
Galaxy Nexus inductive charging mod -- Fenris_Ulf is that man! After seeing the iFixit teardown back in November, I knew this mod was going to be easy and safe. But, I didn't know which pin to inject the power too. Now I do and I didn't have to buy a dock to find out. Nice!
Other helpful tips and information found this thread -- If anyone has more to add, I'll either put that information in the gid or link you post in this link to post #4. And don't forget, a picture is worth a thousand words.
EDIT: Qubex has posted a link to a thread that will possibly get the Galaxy Nexus charging in AC mode when placed on the touchstone. http://forums.androidcentral.com/ver...ml#post1629818
Okay, lets get started.
First, remove the conductive coil from the Palm Pre battery cover. It will peal off, but be careful that you don't damage the coil. You've saw the High WAF video, you can do it like he did but I found it easier to use a thin piece of plastic that I cut out of some packaging. Just work it under the stickers and coil. Take your time. You don't want to mess this up. Also, you will notice a small piece of black foam near the bottom of the cover. We will be using that later.
Next, place the battery cover (you can used the extend battery & door or the stock battery & door) on the Touchstone and use the magnets to hold it in place. Center the door side to side. The camera hole should be right at the edge of the Touchstone. Just slide the door around and the magnets will align themselves.
NOTE: Because the battery door on the Galaxy Nexus isn't rubberized like the Palm door, and because I'm going to use my phone with a car dock, I'm using the stronger magnets here. The stronger magnets will pull to different parts of the charger depending on which side you place down. Mine are placed towards the out edge of the charger, but you can use either side. If you place them closer together make sure you still have room to place the coil in the center. This isn't an issue with the standard metal discs Palm used.
EDIT: Also notice that I am using the extended battery door. I used a razor-blade to trim some of the plastic "ridge" that runs right below the camera opening and between the two upper magnets. I did this so that it does not crush the charging coil. This is not needed on the stock door.
Next, remove two magnets but leave the other two in place so that they will hold the door where you want it. Now place a piece of double sided tape on the door and then put the magnets back in place. The tape will help keep the magnets from sliding around.
Repeat on the other side and then put some tape down the middle to help hold the coil against the door.
NOTE: If using the stronger magnets, be careful not to flip them over when you remove them so the go back on the way you had them. Also, because the stronger magnets are placed further apart, they don't fit under the original sticker like the stock ones did. As you will see below, I used a piece of electrical tape to cover them.
EDIT: For extra holding power add 4 additional magnets (not the Palm discs) the the battery cover as pictured below.
Now put the coil in place and press everything down tight.
EDIT: Notice that I trimmed the sides of the Palm sticker so that it doesn't interfere with the installation of the door.
Now we need to remove the back cover. First remove the six screws on the back. Then, using the guitar picks slowly work the edges of the back cover away from the glass. BE VERY CAREFUL SO YOU DON'T CRACK THE GLASS!!!! DO NOT PRY ON THE GLASS!!! The class will "pop" right out when you get enough of the back cover pulled away with the picks. Not hard at all really, but take your time.
You can see the three contact points here. We will use the two outside pins.
Place the tape on the contacts of the back cover. You want the adhesive side down here.
IMPORTANT!!! Flip the cover over and trim the sides of the tape as shown. You don't want the extra tape hitting something it shouldn't!! When you are done you can put the phone back together, but keep the the battery cover off.
Note: If you plan on using a dock that uses the pins, you might want to consider cutting back the tape a little and putting a dab of solder on these. The adhesive side of the tape is not as conductive as the foil side. This could cause issues with the dock (or it might not). The solder connection will eliminate this potential issue. Keep in mind if you do solder here, you could still remove the solder with
desoldering wire if you need to. Or you could replace the back cover. I DID NOT solder mine because the foil side of the tape is in contact with the board and that's all we need to charge.
EDIT: Another idea I have is to simply fold the tape here so that the conductive side of the tape will be sandwiched between the contacts when the phone is reassembled. See picture below.
Wrap the tape around the battery opening of the cover. Flip it over get the black foam bit we left on the back of the Palm door. Cut it in half and put one piece on each tab.
EDIT: I found that 3M automotive trim tape works well here.
Now press the tape the rest of the way down and trim off the excess tape.
Now we need to finish the back cover. Place a piece of double sided tape on the side of the phone next to the contacts we just made. Then place two pieces of copper tape with the adhesive side facing up. Use the double sided tape to hold the ends in place.
Now put the battery cover on and wrap the tape on to the back of the cover. We want the copper tape to stay with the cover, not the phone.
Now remove the cover. It should look something like this. The top piece of tape is the ground and the bottom is positive.
While holding the end of the tape in place, peal it back and stick it to the charging coil tab leaving a little room to solder the joint. Then trim the tape.
Note: We need to solder this or else we won't get enough current to charge the phone due to the adhesive on the back side of the tape.
Now put the back cover on. Always slide the bottom tabs in first (don't snap them in) and then work up the sides and finish at the top. The cover should fit perfect and if all went well your Galaxy Nexus will charge while on the Touchstone!
Note: It can take up to 10 seconds or more before the phone shows that it's charging. Be patient.
To undo the mod, just pull the coil and tape off the battery door and remove the copper tape from the phone.
This is a great way to keep your battery topped off or charge it while you are driving. You won't have to deal with wires, clips etc. If you need the phone just grab it. When your done hold the phone up to the dock and the magnets will line it up. You'll do this easily with one hand and without having to take your eyes off of the road. With the stronger magnets in place, it stays put even over bumps and rough roads. I've also tested with the standard magnets. It never fell off, but I never felt as comfortable.
Note: The car mounted Touchstone was able to stay ahead of battery drain and charge the battery with my Palm while driving even when adding the hotspot to Pandora and navigation. I hope it works with the GN, but wonder if the thirsty LTE radio might have other ideas. Worse case it that you plug the USB cord directly in the phone on long trips. I'll update this as I gain more information.
EDIT: This mod charges the phone at USB rate. My phone gains about 15-20% per hour in the car while using streaming Pandora with Bluetooth. The key here is that the screen is off most of the time. If I add navigation with the screen on to the mix. the Touchstone can not keep up. If I turn the screen off (instructions still go through BT) it will charge. So the key seems to be screen time. On longer trips or if my battery is really low and I need a quick charge, I simply plug the USB cord into the phone while and leave it docked on the Touchstone. My Palm car charger will charge the phone at the AC rate when plugged directly into the phone.
[B]EDIT: Qubex has posted a link to a thread that will possibly get the Galaxy Nexus charging in AC mode when placed on the touchstone. http://forums.androidcentral.com/ver...ml#post1629818 [/B
Also, be aware that the Touchstone can get really, really hot mounted on your dash board during the summer months. If it gets two hot, it will not charge your phone correctly until it cools off. The phone will bounce back and forth between charging and not charging every couple of seconds. I've found that it helps to cover the Touchstone with something so it won't soak up all of the suns rays while I'm at work. I hang a baseball cap on mine and crack my windows slightly and does the trick. (A big thanks goes out to acaplinger for bring this point up!)
Palm Vehicle Power Charger
Palm Touchstone Charging Dock
EDIT: The rate of charging can be increased from USB to AC with Franco's Kernel.
Originally Posted by comprocket
Mods, feel free to move this if you need to.