[MOD] Simple Wireless Charging! - 10 minutes & Under £10

flez1966 · Nov 3, 2012

stu5797 said:
The silver "aluminum" sticker needs to be placed correctly. Its a mandatory piece

emmmm well i tried injeting a bit of voltage with diode test on the meter to the test points in the charger, that doesnt fool it... (reciever attached to an old battery and a voltmeter, no increase etc)

Mandatory, as in something found in the kitchen will do if an idiot peeled them off and threw them away......

off to look for replacement 'foil' ... ghods what a trick......

better also order another back on monday...

stu5797 · Nov 3, 2012

Sorry to give you the bad news. Trial and error

Ryan_G · Nov 3, 2012

Copper Tape

I've now de-soldered the wires and replaced them with copper tape, the copper tape I got from ebay for £1.85 which I received next day. There is now no bulge on my phone which was there from the wires. I folded the ends to make a flap which sits against the charging pins.

flez1966 · Nov 3, 2012

stu5797 said:
Sorry to give you the bad news. Trial and error

well tinfoil failed, tablets in a foil backed blister pack failed, a potato chips shiny plastic pack thing failed, i guess its a specific resonance, bit like they use to detect clothing being stolen from stores with security tags. maybe i need to find a clothing store and find a tag lol

oh well, another back on order, maybe another base too...

vinas1 · Nov 3, 2012

Ryan_G said:
Multiple users have reported that the US version doesn't recognise the charger yet, I'm assuming that at a later stage a fw upgrade should hopefully enable it.

I did the mod today, a beautiful how to BTW. Unfortunately my T-Mobile Note II will not read the voltage. Bummer $30 wasted. Lets hope T-mobile or someone can make a software fix for this... I can't understand why they would put the pins on the t-mobile version if it didn't have the firmware to support it. Oh well.

dcwiker05 · Nov 3, 2012

flez1966 said:
Just about to do this, I bought a charger, a pre back, and 2 pixie backs....

I found the pixie backs to have much stronger glue than the pre, buy the pre!

I have sat all three coils on my charger, nothing, no voltage.....

I have ripped the bottom off the charger, note to others, it has three screws under the sticky base.

theres power on the board, but i noticed two thick wires I guess go to the charging TX coil, and two thin wires, is there another coil in the charger to detect anything to initiate a charge? does it need to see something from the phone back? ie a magnet, I didnt keep the backs or the 4 metal washers, just the RX coils and controller chips.

not sure what to do next, will prod some more with the meter.

I got some pixi cases too to do this for my Note II and my girlfriends GSIII. Which contact is the positive and negative for the pixi?

Ryan_G · Nov 3, 2012

dcwiker05 said:
I got some pixi cases too to do this for my Note II and my girlfriends GSIII. Which contact is the positive and negative for the pixi?

I think its the same top positive and bottom negative but its not in line with the charging pin on the Note II but it is in line with the SIII, so when you rotate the module around to meet the Note II charging pins the polarity is reversed which you will have to ensure you correct before hooking it up (I hope I make sense).

But please double check with your meter before going ahead just to confirm.

Remember to keep the silver foil sticker intact when you take it out of the pixi casing and place it back over the coil.
Also could you please take a picture of the pixi module and upload it on here.
Good luck with the mod and let us know how you get on.

Ryan_G · Nov 3, 2012

vinas1 said:
I did the mod today, a beautiful how to BTW. Unfortunately my T-Mobile Note II will not read the voltage. Bummer $30 wasted. Lets hope T-mobile or someone can make a software fix for this... I can't understand why they would put the pins on the t-mobile version if it didn't have the firmware to support it. Oh well.

Its annoying about the US Tmobile Note, when the official wireless charging gets released there will be some angry customers if they don't enable it at a later stage. You have the hardware so keep the mod you've done because its a matter of time before it should get enabled or you could always change your kernel to one which confirms the wireless charging is working.

I'm going to post a notice about the US tmobile note II on the first page, to prevent anyone else doing the mod and finding it not working.

dcwiker05 · Nov 3, 2012

Ryan_G said:
I think its the same top positive and bottom negative but its not in line with the charging pin on the Note II but it is in line with the SIII, so when you rotate the module around to meet the Note II charging pins the polarity is reversed which you will have to ensure you correct before hooking it up (I hope I make sense).

But please double check with your meter before going ahead just to confirm.

Remember to keep the silver foil sticker intact and when you take it out of the pixi casing.
Also could you please take a picture of the pixi module and upload it on here.
Good luck with the mod and let us know how you get on.

Thank you

Im getting the tape and covering as well so once that gets here I will post pictures. I should have read this whole forum though because I just saw it wont work on the T-Mobile Note II lol hopefully it at least works on the GSIII and a dev can get it working on the Note II

flez1966 · Nov 3, 2012

Ok I have opened the charger and taken it all apart, theres two coils in the charger, a central one of about 12 turns of thick wire, guessing this is the charge TX coil.

The 2nd coil is about the size of the outer of the receiving coil, I guess this is the one used to detect the phone/silver foil that i dont have...

TP5 is the test point that seems to vary if metal objects are brought near the face of the charger, but its a versmall change from about 0.4v to 0.35v etc

I tried injecting a few extra millivolts into it and also pulling it down to initiate a charge but nothing... guess i'm waiting for the new back with magic foil...

edit: ****

I found some of the magic shiy foil in the bin!
t did not help to start a charge, but it help me find one thing which lead to it, with the reciever coil sat on the base, and the foil taped on, no charge, but using diode test on the meter to inject a bit of voltage into TP6(preferred) and TP7 starts a charge if theres a weak signal from the foil, and it stays charging, so, may be a bit of a useful titbit of info.

Also I found i got best voltage out from the coil is if its not central, I found the best position was with the centre of the coil positioned above the first arch of the M in palm, I guess other of the 90'deg positions may work the same, but the M is an easy landmark.

Are you other people with these just using a USB/data micro usb from the pc or a real palm charger into the base, just wandering if it uses more pins on the usb to signify its a real palm charger etc like some phones do for higher current charging.

nm8 · Nov 4, 2012

Finally finished my mod today. The most difficult and time consuming part of this mod is the preparation and etching of the flexible PCB.

Things needed:
1. copper clad laminate (pyralux) - flexible PCB
2. Copper tape
3. ferric chloride solution - for etching
4. Alcohol or acetone - to clean up pcb after etching
5. Water proof/permanent marker pen, tweezer, nipper/scissor, mobile phone pry tools, soldering iron, bla blah

Trial etching:

More pics:

video:

stu5797 · Nov 4, 2012

This is the best mod out! Check out the video! I bought this for gs3 and loved it. Can't wait to get it for my note 2.

http://youtu.be/b5rrRuOi4JA

cswithxda · Nov 4, 2012

nm8 said:
I oredered and waiting for delivery of the below, surely this will work with our mod:
http://www.ebay.co.uk/itm/140872728959?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

I have also ordered a few colors of this just to try out as it seems so thin, and for the price, you can't go wrong:
http://www.ebay.co.uk/itm/170931469549?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
http://www.ebay.co.uk/itm/170931478266?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
http://www.ebay.co.uk/itm/170931477182?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Those are some freaking nice finds! God I wish I got search skillzzzz like you guys!

Ryan_G · Nov 4, 2012

nm8 said:
Finally finished my mod today. The most difficult and time consuming part of this mod is the preparation and etching of the flexible PCB.

Things needed:
1. polyimide kapton copper clad laminate (pyralux)
2. ferric chloride solution
3. (will update later - I'm late for work now..........)

This is amazing, by far the best mod :good:

I've replaced the wires with copper tape. Now I have seen this I am thinking v3 might be happening soon, just need get the materials together and work out how to do this.

Ryan_G · Nov 4, 2012

flez1966 said:
......
Also I found i got best voltage out from the coil is if its not central, I found the best position was with the centre of the coil positioned above the first arch of the M in palm, I guess other of the 90'deg positions may work the same, but the M is an easy landmark.

Are you other people with these just using a USB/data micro usb from the pc or a real palm charger into the base, just wandering if it uses more pins on the usb to signify its a real palm charger etc like some phones do for higher current charging.

Interesting finds you got there,
they don't recommend plugging the cable in to the computer. I am using my original SII charger which fits perfectly in the touchstone, so i'm assuming you use any charger not just the Palm charger.

nm8 · Nov 4, 2012

Ryan_G said:
This is amazing, by far the best mod :good:

I've replaced the wires with copper tape. Now I have seen this I am thinking v3 might be happening soon, just need get the materials together and work out how to do this.

Have you already ordered the flexible PCB? If not, pm me your address and I'll send you a strip ready to make around x3 of the Z- shaped flex pcb...

Ryan_G · Nov 4, 2012

nm8 said:
Have you already ordered the flexible PCB? If not, pm me your address and I'll send you a strip ready to make around x3 of the Z- shaped flex pcb...

Thanks I appreciate that,
I haven't yet ordered it, I was gonna see how you got on with it.

nm8 · Nov 4, 2012

nm8 said:
Have you already ordered the flexible PCB? If not, pm me your address and I'll send you a strip ready to make around x3 of the Z- shaped flex pcb...

edit:
do you also need the ferric chloride???

AndreiLux · Nov 4, 2012

I see some people were talking about my kernel. The wpc increase wasn't intentional at the beginning. But I've yet to hear from somebody testing it, so I know if I just keep the changes or revert them.

nm8 · Nov 4, 2012

AndreiLux said:
I see some people were talking about my kernel. The wpc increase wasn't intentional at the beginning. But I've yet to hear from somebody testing it, so I know if I just keep the changes or revert them.

I was also thinking of flash8ng your rom but it would help if you remove the voltage mod by default and make it into a flashable zip (add on) instead. Cheers

[MOD] Simple Wireless Charging! - 10 minutes & Under £10

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