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Has anyone thought about stuffing the touchstone coil into the nexus4? It sounds stupid i know since the n4 already has wireless charging built in, but the chargers are expensive and hard to find while the touchstone chargers are cheap and plentiful.
peachpuff said:
Has anyone thought about stuffing the touchstone coil into the nexus4? It sounds stupid i know since the n4 already has wireless charging built in, but the chargers are expensive and hard to find while the touchstone chargers are cheap and plentiful.
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Click to collapse
The Qi protocol requires that the receiver send a handshake to the transmitter to start charging. If a non-Qi device is on the plate, then it will do a start and stop every 20 sec to poll for the signal. I am working on changing the Touchstone coil to a Qi transmitter coil and see what happens. I received the Qi coil, Qi inductive charging sleeve (for testing) and waiting on a Palm touchstone sleeve. My concern is that the touchstone without the Qi communication on charging status may overheat the N4 if it doesn't stop the power transmission properly.
terracode said:
My concern is that the touchstone without the Qi communication on charging status may overheat the N4 if it doesn't stop the power transmission properly.
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People have put touchstone coil's in other phones and had no issues, i don't see how it would be any different here. There are 4 contact points that connect the qi coil and nfc on the rear cover, attach the touchstone coil to 2 of them and hope you can close the cover with everything inside.
peachpuff said:
People have put touchstone coil's in other phones and had no issues, i don't see how it would be any different here. There are 4 contact points that connect the qi coil and nfc on the rear cover, attach the touchstone coil to 2 of them and hope you can close the cover with everything inside.
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Click to collapse
He's doing the opposite; he's replacing the coil in the touchstone charger with a QI charging coil.
I connected the Qi compliant coil to the Touchstone board and it didn't recognize the Qi receiver so it didn't start energy transfer. I then moved the thin wire coil that the Touchston uses to sense a Palm Receiver to above the Qi coil. The transmitter didn't start with a Qi receiver, but did recognize the Palm receiver and started energizing the coil. Issue was the voltage was very low due to the mismatched coils (Qi transmitter and TS receiver). I need to take apart the Touchstone receiver to see what it uses to activate the transmitter. More tinkering is needed.
I think QI controls the charging level from the phone, by communicating back to the charger. It may not be a good idea to disable this mechanism by swithing a charge coil on manually (though I'd think that the phone would not charge at all, then).
If you want to try, I think QI uses 141 KHz. Supply that to a coil at the correct power and see if it charges.
jutezak said:
I think QI controls the charging level from the phone, by communicating back to the charger. It may not be a good idea to disable this mechanism by swithing a charge coil on manually (though I'd think that the phone would not charge at all, then).
If you want to try, I think QI uses 141 KHz. Supply that to a coil at the correct power and see if it charges.
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Click to collapse
I am actually doing the opposite. The Qi coil is on the transmit side attached to the touchstone charger power board. I need a way of sending a proper signal to the Palm Touchstone so that it energizes the coil. The Qi receiver doesn't have the proper interface to send a signal to the Touchstone to power up.
$50 is hardly expensive.... Wall Mart wanted $50 for a plug in travel charger for my galaxy tablet. Just find the lg one.
Sent from my Nexus 4 using Tapatalk 2
Qi coil
terracode said:
I am actually doing the opposite. The Qi coil is on the transmit side attached to the touchstone charger power board. I need a way of sending a proper signal to the Palm Touchstone so that it energizes the coil. The Qi receiver doesn't have the proper interface to send a signal to the Touchstone to power up.
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Click to collapse
So are you able to replace the qi coil successfully to TS?
For someone who want's multiple docks around, $50 does add up. For someone like me who has 2 or more touchstone chargers laying around from previous mods/palm phones this would be useful.
I've tried to do the following to my Nexus 4, but couldn't get off the back cover without damaging the phone (I could get everything but one corner of the phone to pop open, I noticed I was beginning to damage the body a bit and stopped trying).
Mind you, the following needs to be used with a case; works best with rugged cases/hard cases.
If anyone is able to open their phone up you can try my following idea:
1. Remove the back of the phone
2..There should be 4 pins, 2 for NFC, and 2 for the QI coil.
3. Use a voltmeter to find out which pin is positive and which is negative.
-- I am not sure if the touchstone coil could fit INSIDE the phone, so I assumed it would not fit, and came up with this solution--
4. Using copper tape (if you've modded your GNEX before, you probably have some left over) stick it onto the pins, and lead them outside of the back cover, wrapping around so you see the copper tape on the OUTSIDE of the phone
5. Close the phone back up, the copper tape should now be hanging outside of the side of the phone.
6. Get your touchstone coil and tape/adhere it to the inside of your selected case.
7. Take your copper tape yet again and solder it to the leads of the touchstone coil, and position the copper tape so it touches the existing tape (from the nexus) when you put the case onto your phone.
That's it. The touchstone should be thin enough so that it doesn't interfere with the fitting of the case. This was the situation for my previous two mods with Galaxy Nexus's, the fit of the case was no problem. (Otterbox Commuter, and SGP Neo-Hybrid).
DDRFAN said:
For someone who want's multiple docks around, $50 does add up. For someone like me who has 2 or more touchstone chargers laying around from previous mods/palm phones this would be useful.
I've tried to do the following to my Nexus 4, but couldn't get off the back cover without damaging the phone (I could get everything but one corner of the phone to pop open, I noticed I was beginning to damage the body a bit and stopped trying).
Mind you, the following needs to be used with a case; works best with rugged cases/hard cases.
If anyone is able to open their phone up you can try my following idea:
1. Remove the back of the phone
2..There should be 4 pins, 2 for NFC, and 2 for the QI coil.
3. Use a voltmeter to find out which pin is positive and which is negative.
-- I am not sure if the touchstone coil could fit INSIDE the phone, so I assumed it would not fit, and came up with this solution--
4. Using copper tape (if you've modded your GNEX before, you probably have some left over) stick it onto the pins, and lead them outside of the back cover, wrapping around so you see the copper tape on the OUTSIDE of the phone
5. Close the phone back up, the copper tape should now be hanging outside of the side of the phone.
6. Get your touchstone coil and tape/adhere it to the inside of your selected case.
7. Take your copper tape yet again and solder it to the leads of the touchstone coil, and position the copper tape so it touches the existing tape (from the nexus) when you put the case onto your phone.
That's it. The touchstone should be thin enough so that it doesn't interfere with the fitting of the case. This was the situation for my previous two mods with Galaxy Nexus's, the fit of the case was no problem. (Otterbox Commuter, and SGP Neo-Hybrid).
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Click to collapse
Was this simply the metal coil or the entire assembly including board from a Pre charging cover? very Interested as I have a Nexus 4 I will be receiving Monday
singularityq said:
Was this simply the metal coil or the entire assembly including board from a Pre charging cover? very Interested as I have a Nexus 4 I will be receiving Monday
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Click to collapse
You should only have to replace the metal coil.
OP, a simple google search would have sufficed http://www.webosnation.com/nexus-4-gains-touchstone-charging-thanks-clever-hacking
On 21-Oct-2013 Around 10:00 PM my Nexus 4 fell into water bucket with in 2-3 second it turned off automatically in water. i took my phone from the water and left it dry for a while. since i had no screw-drivers, i put my phone into rice box over night.
On 22-Oct-2013 11:00 AM I took my phone out of rice box and brought new screw-drivers disassembled Nexus 4 , and i found the water still laying near the volume button on to the board . Then i wiped the water and rubbed the board with brush and Isopropyl alcohol (IP Water) after drying. I Reassembled hoping that it would turn on. But it refused to turn On . I tried all kind of key combinations but nothing worked. So i connected to the wall charger, A Stead Red light and nothing else no response . So disassembled the phone again and submerged the mother board and LCD case into the rice .
On 23-Oct-2013 Morning i reassembled it, but no use same result a constant red light light when connected to the charger. I disassembled it and checked the battery with multimeter and it was 3.75V . so i connected the battery terminals with 5V 1amp charger for 20 min . now the battery was reading 4.10V with multimeter. then i reassembled but dose not work, same Stead Red light.
Then i disassembled it again and submerged the mother board in Isopropyl alcohol (IP Water) for 30Min, Cleaned and left it to dry then reassembled, again no use same result Stead Red light. When i connect the charger for more then 1 hour the phone gets heated up near the rear camera.
On 24-Oct-2013 I'm Writing this thread and waiting for some hope??
saikiran91 said:
On 21-Oct-2013 Around 10:00 PM my Nexus 4 fell into water bucket with in 2-3 second it turned off automatically in water. i took my phone from the water and left it dry for a while. since i had no screw-drivers, i put my phone into rice box over night.
On 22-Oct-2013 11:00 AM I took my phone out of rice box and brought new screw-drivers disassembled Nexus 4 , and i found the water still laying near the volume button on to the board . Then i wiped the water and rubbed the board with brush and Isopropyl alcohol (IP Water) after drying. I Reassembled hoping that it would turn on. But it refused to turn On . I tried all kind of key combinations but nothing worked. So i connected to the wall charger, A Stead Red light and nothing else no response . So disassembled the phone again and submerged the mother board and LCD case into the rice .
On 23-Oct-2013 Morning i reassembled it, but no use same result a constant red light light when connected to the charger. I disassembled it and checked the battery with multimeter and it was 3.75V . so i connected the battery terminals with 5V 1amp charger for 20 min . now the battery was reading 4.10V with multimeter. then i reassembled but dose not work, same Stead Red light.
Then i disassembled it again and submerged the mother board in Isopropyl alcohol (IP Water) for 30Min, Cleaned and left it to dry then reassembled, again no use same result Stead Red light. When i connect the charger for more then 1 hour the phone gets heated up near the rear camera.
On 24-Oct-2013 I'm Writing this thread and waiting for some hope??
Click to expand...
Click to collapse
Can you try holding volume up and down and power to see if it boots to the bootlosder?
Sent from my Nexus 4 using Tapatalk 2
Hidden Username said:
Can you try holding volume up and down and power to see if it boots to the bootlosder?
Sent from my Nexus 4 using Tapatalk 2
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Click to collapse
As i said before i'v tried each and every key combinations, but no luck.
saikiran91 said:
As i said before i'v tried each and every key combinations, but no luck.
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Click to collapse
That is sad to read.. Hope your N4 gets working soon.
Try this,
BASIC TROUBLESHOOTING - charge your mobile overnight atleast for 8-9 hours with mobile switched off and then turn it on. :good:
Don't worry about the heating try it.
Let us know for the updates after trying.
Time for replacement.
Sent from my neXus⁴ using Tapatalk 2
1slow4G said:
Time for replacement.
Sent from my neXus⁴ using Tapatalk 2
Click to expand...
Click to collapse
Water damage dose not cover under warranty, so replacement wont be possible.
Eventough you've checked the battery with multimeter seems something wrong with it, you should get a new battery and check it before do anything else.
PsyOr said:
Eventough you've checked the battery with multimeter seems something wrong with it, you should get a new battery and check it before do anything else.
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Click to collapse
Nexus batter is too costly here. if it surely works i can buy it. is there any way to turn on nexus without battery ?
saikiran91 said:
Water damage dose not cover under warranty, so replacement wont be possible.
Click to expand...
Click to collapse
i knew i should of explained my post more.. I meant to buy a replacement
That alcohol you used had water content? You should have used 99% to prevent issues
Sent from my Nexus 4 using Tapatalk
Hi @saikiran91
Noob question here - how do you measure the battery voltage since there is a strip attached to the Nexus 4 battery and hence very difficult to measure the voltage using a multimeter I presume...Cutting a long story short, I had given my Nexus 4 bought here in UK to my Mom in India which stopped working last year and always shows a steady red light. So I got the phone back here in UK now and have disassembled and removed the battery. But I was n't able to measure the battery voltage (before I go ahead and buy a new replacement battery.)
Any pointers on measuring the battery voltage would be much appreciated.
OK, so this isn't your usual story with the phone dropping in water. Today I was using my phone until the battery got to about 6% at which point I decided to charge it. Its here that things get weird. The phone wouldn't charge, it wouldn't even detect that it was plugged in. So naturally I take of my case and take off the back of the phone to have a look and guess what i find. THE PHONE'S INSIDES ARE WET. Not like a few drips but instead like a pot cover on the stove kind of wet, and that's only on the inside, the UAG case that I have with my phone was completely dry (have no pics was in a panic and just dried it off, both the inside of the pone and the plastic back). The battery I have with the phone is a replacement one with a water damage indicator on it and its completely pink (note the indicator is on the other end next to the battery's connector pins.
So now I decide to try the old battery that came with the phone (swollen battery issue form the bad BD batch had to be replaced) and now with that battery the phone still isn't charging. With both batteries the most I get is a quick 'charging' indication for about 2 secs then nothing for another 2 secs then 'charging' again for 2 secs. That's the most I get.
So how did my phone just start to form condensation on the inside and why isn't it charging with either battery, wont be detected by my pc either.
please help
EDIT: i9500 32gb, had it since September, bought it from a friend so no warranty.
dorianmayers said:
OK, so this isn't your usual story with the phone dropping in water. Today I was using my phone until the battery got to about 6% at which point I decided to charge it. Its here that things get weird. The phone wouldn't charge, it wouldn't even detect that it was plugged in. So naturally I take of my case and take off the back of the phone to have a look and guess what i find. THE PHONE'S INSIDES ARE WET. Not like a few drips but instead like a pot cover on the stove kind of wet, and that's only on the inside, the UAG case that I have with my phone was completely dry (have no pics was in a panic and just dried it off, both the inside of the pone and the plastic back). The battery I have with the phone is a replacement one with a water damage indicator on it and its completely pink (note the indicator is on the other end next to the battery's connector pins.
So now I decide to try the old battery that came with the phone (swollen battery issue form the bad BD batch had to be replaced) and now with that battery the phone still isn't charging. With both batteries the most I get is a quick 'charging' indication for about 2 secs then nothing for another 2 secs then 'charging' again for 2 secs. That's the most I get.
So how did my phone just start to form condensation on the inside and why isn't it charging with either battery, wont be detected by my pc either.
please help
EDIT: i9500 32gb, had it since September, bought it from a friend so no warranty.
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Click to collapse
Sounds like condensation that can occur if going from a warm humid climate (perhaps your pocket) into a much colder one. There is likely to be some remaining moisture that must be removed immediately and leave the battery out of the phone until you do or electrolytic corrosion will occur and that can kill the phone. I'd suggest putting the phone (remove back cover) in a fan forced oven at 70C for a couple of hours to dry it out.
JohnnyInBriz said:
Sounds like condensation that can occur if going from a warm humid climate (perhaps your pocket) into a much colder one. There is likely to be some remaining moisture that must be removed immediately and leave the battery out of the phone until you do or electrolytic corrosion will occur and that can kill the phone. I'd suggest putting the phone (remove back cover) in a fan forced oven at 70C for a couple of hours to dry it out.
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Click to collapse
I've had it blow drying for a bit. the battery is still out. I will put it back in in the morning. will give results then.
heating it up is a bad idea. it causes water to condensate which was obviously the initial problem here...
you could put the phone in rice. much rice. and leave it there for a couple of days.
of course after removing the battery
dr.wtf said:
heating it up is a bad idea. it causes water to condensate which was obviously the initial problem here...
you could put the phone in rice. much rice. and leave it there for a couple of days.
of course after removing the battery
Click to expand...
Click to collapse
I was going to type that. GG
Using rice is a great trick, put your phone surrounded with rice and leave it over night and hope for the best.
Well... a day without the battery in and I had it rice and nothing. The phone still works but no charge. I'm going to order in a charging port and see what happens from there. Also I's taking the phone to be serviced today, a guy said to bring it it to make sure there isn't more corrosion damage.
ok update.
Carried it to the shop and they said it didn't need servicing and that all i would need to do is buy a replacement usb. I said okay and in the meantime I bought a battery charger so i could charge the battery alone. after 4 hours the thing charged it to 46% (sigh) as soon as i put back in the battery i tried to charge it again and still nothing from the usb. Fast forward 15 mins later as i was about to leave work, I borrowed a coworker's charger and guess what... it finally charged. Got home and plugged it in an just the same it was charging. Granted however i had to keep it held a way so i could charge and not keep cutting out. This all happened Thursday and Friday night when i came to charge my phone again I plugged it in at 40% and when i looked back at it, it was at 45% and no longer charging and no matter how I hold it still nothing. I simply restarted the phone while the cable was still in and when it came back on it was charging and did so straight to 100% this morning.
Hi there.
A few months ago I dropped my refurbed, less than 2 month old, N4 on a chair leg and the housing around the charger port broke. I was told the motherboard was screwed, hence why the charge wasn't lasting. I decided the phone was too good to get rid of so I kept with it. The other day the official charger lead cable charger USB plug snapped. I put it down to being squashed by a chair. However, another cable did the exact same thing (and wasn't squashed by a chair). Could it be as a result of going into this bent housing? What is the solution.
Thanks
A bit difficult to ascertain what's actually going on without something to look at.. Would you mind posting a few pics of the housing around the charging port and the snapped cables.
On a lighter note, Looks like your N4 doesn't quite like being around furniture (chairs, specifically )
First of all, I have moved on long ago, my production phone is a Nexus 6. So with the N4 gathering dust in a drawer, I decide why not take a chance with it. The N4 was fully functional, but like many others had a partially splintered glass back. Years ago I had bought a replacement back that I never installed. So I thought, why not replace the back and with the back off replace the battery as well.
I made one mistake in the process. I didn't realize the battery had a wire taped to its side that that ended in a gold plug that attaches to a socket on the motherboard. When I removed the battery which was glued down I pulled the wire out of the plug. I then soldered the wire back onto the plug, and at least my voltmeter showed continuity.
One I reassembled battery is ok, wifi works, but no cell service. The phone sees the difference between the SIM being in or out, but no service. The SIM gave service before the surgery, and also does in another phone.
I've taken it apart and put it together a few times, making sure the plug is seated in the socket and the there is continuity between the bit of exposed wire and the plug..
One other thing caught my eye. The old battery has a silver foil backing apparently glued to it. The replacement battery does not. Could there be a shielding issue?
At any rate I thought I would ask for any suggestions. The loss of cell connection is not a tragedy. My plan is to use it to play with different roms while sticking with stock on the N6. for my real use.
kmandel said:
...I pulled the wire out of the plug. I then soldered the wire back onto the plug, and at least my voltmeter showed continuity....
Click to expand...
Click to collapse
This wire is coaxial type and because of the size it's almost impossible to repair it correctly.
I would suggest to buy a new one, form here:
https://www.spareslg.com/gb/cabo-coaxial-lg-e960-nexus-4-ead62290101.html
or look on ebay/aliexpress/google/etc. for part number: EAD62290101