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

Ryan_G · Oct 23, 2012

[size=+1]Simple wireless charging - Ten Minutes & Under Ten Pounds[/size]

Confirmed working on the:

Confirmed not working on the:

[size=+1]Please do this mod at your own risk[/size]

[size=+1]Big Thanks to m055 who has posted a video guide on Youtube check it out from here[/size]

I've decided to go ahead and do the mod for the wireless charging as i've seen a few threads tempting me.
What you need is:

Palm Touchstone £5.24 (Amazon UK)
Palm Pre Touchstone case £3.49 (eBay)
Electrical Tape
Copper foil tape [thanks rj3005]
Solder Iron & Solder

You can also use thin wire to do this mod if you don't have copper tape handy.
This all cost me under £10 excluding the solder iron. You might find it cheaper shopping around.

I first took the induction coil out of the Palm Pre case carefully.
!!! Its very important that you peel the silver sticker off carefully and not cause any sharp bends which could cause cracking. You need this silver sticker to stay intact for the whole operation to work!!!
The top pin is positive and bottom is negative as shown in the picture, this is also the same on the note the top pin being positive and bottom negative.
I placed the coil in the center of the Note battery case I then placed the silver sticker over the coil as it was on the Palm Pre (this is very important that you place the silver sticker back over the coil as without it the induction doesn't seem to work.)
I then checked where the charging pins on the note meets with the case and marked it with a pen to indicate where the ~~wires~~ copper tape would have to be.
Using copper tape, I stuck two tracks going from the charging circuit to the charging pins positions, make sure you leave enough copper track to fold the tape twice over itself to create a spring going against the charging pins.
Solder the track to the charging circuit by tinning the end of the copper track and soldering it to charging circuit contacts, then cut electrical tape to size and place it over the copper track. After place the original insulation cover over the coil with the magnets.
I placed the battery cover over the Palm Touchstone dock and checked the voltage from the copper track with a meter (should be 5.6V any less means you have left the silver foil off or not placed it correctly) to check everything is working and the polarity is correct.
I placed it back on my phone and there you go, I now have wireless charging.

NFC works and magnets do not affect the phone testing the S Pen and Compass seem to operate all good.

List of successful mods completed:

Sorry if its a bit brief, I will try and write it up a bit better.

[size=+1]EDIT: Measurements I've taken
Output Voltage 4.8V (5.6V disconnected)
Output Amps 0.42A[/size]

EDIT: Added pictures of the Galaxy Note on the dock in portrait & landscape

EDIT: I've now swapped my wires over to copper tape

EDIT: nm8 has just posted a solder less alternative [MOD] Note 2 Wireless Charging [Origami style][No Solder]

You can use the Palm Pixi case to do this mod but its very important that you double check the polarity to the charging pins. Do not connect straight to the charging pins until your sure which pins are positive and negative, you could cause damage to your phone Info Regarding the Pixi

EDIT: http://xdaforums.com/showpost.php?p=33861324&postcount=77 QI Wireless Charging Mod

Ryan_G · Oct 23, 2012

Placed this thread in the wrong section, could a MOD please move it.

Itchiee · Oct 23, 2012

Very impressive! :good:

O_G · Oct 23, 2012

Ryan_G said:
Placed this thread in the wrong section, could a MOD please move it.

Great MOD

Moved to original development

randy2 · Oct 23, 2012

What gage speaker wire I want to duplicate your process perfectly what type of soder did u use

Sent from my SPH-L710 using xda app-developers app

rj3005 · Oct 23, 2012

Does the back cover fit without problem after this mod?

Sent from my GT-N7100 using xda premium

Gore785 · Oct 23, 2012

You, or, someone should make a video and post it on the OP.

Sent from my SGH-I897 using xda app-developers app

Ryan_G · Oct 23, 2012

randy2 said:
What gage speaker wire I want to duplicate your process perfectly what type of soder did u use

When I get home, I will have a look at the speaker cable but i'm not entirely sure, and for the solder I don't think the guage matters as you are only soldering on the charging circuit pins and creating a solder ball on the end of the wires. For the actual wires I recommend stripping the insulation off completly and then replacing it with heat shrink as this creates a thin layer of insulation.

rj3005 said:
Does the back cover fit without problem after this mod?

Yes the back cover fits perfectly, you can not feel the coil or the charging circuit but you can feel a slight bump where the wires go but its not noticeable. Its quite a nice fit and handy as the Palm Pre modules lines up perfectly for polarity, you may even get away with having the circuit with the pins directly lined up to the note charging ports to prevent feeling the wires and just extend the coil itself.

FloatingFatMan · Oct 23, 2012

What does it look like actually ON the Touchstone? It it stable?

rj3005 · Oct 23, 2012

Ryan_G said:
Yes the back cover fits perfectly, you can not feel the coil or the charging circuit but you can feel a slight bump where the wires go but its not noticeable. Its quite a nice fit and handy as the Palm Pre modules lines up perfectly for polarity, you may even get away with having the circuit with the pins directly lined up to the note charging ports to prevent feeling the wires and just extend the coil itself.

Your speaker wires are really thick I would use 0.7mm lacquered copper wire

Sent from my GT-N7100 using xda premium

Ryan_G · Oct 23, 2012

FloatingFatMan said:
What does it look like actually ON the Touchstone? It it stable?

I will post a picture of it when I get home, but it is quite stable on the touchstone it holds it up. It will come off the magnetic field if you physically knock it off but it wouldn't come off if you knocked the table or anything its on.

rj3005 said:
Your speaker wires are really thick I would use 0.7mm lacquered copper wire

I think the speaker cable I used was about 1mm thick i will double check but 0.7mm would be best, but with a 1mm you hardly notice it on the case anyways.

RavenY2K3 · Oct 23, 2012

Great mod, it's pretty cool how android has picked up the wireless charge, I didn't even know it was natively supported. What is the charging time like compared to a normal tethered charge?

Sent from my GT-N7100 using Tapatalk 2

nm8 · Oct 23, 2012

wow nice and cheap... what's the voltage coming out from the coil ?

Bond@007 · Oct 23, 2012

RavenY2K3 said:
Great mod, it's pretty cool how android has picked up the wireless charge, I didn't even know it was natively supported. What is the charging time like compared to a normal tethered charge?

Sent from my GT-N7100 using Tapatalk 2

It will take around 6-7hrs to full charge. Not great ...

Ryan_G · Oct 23, 2012

nm8 said:
wow nice and cheap... what's the voltage coming out from the coil ?

I measured 5.6V from the output, but I didn't measure the actual coil itself.

Ryan_G · Oct 23, 2012

RavenY2K3 said:
Great mod, it's pretty cool how android has picked up the wireless charge, I didn't even know it was natively supported. What is the charging time like compared to a normal tethered charge?

I'm not so sure, it was something I quickly did before I went to work not had a play with it yet. I'm home now so I've docked it on the charger at 50% so I will report back in hour with what percentage it is at.

nm8 · Oct 23, 2012

Ryan_G said:
I measured 5.6V from the output, but I didn't measure the actual coil itself.

Thanks for hte quick reply.

I have 2 concerns:
1. will 5.6v fry the battery sooner ? (forgot to ask the ouput amperage)
2. if the back cover bulges, it might crack the cover sooner or later..

what do you think ?

thanks

Ryan_G · Oct 23, 2012

nm8 said:
Thanks for hte quick reply.

I have 2 concerns:
1. will 5.6v fry the battery sooner ? (forgot to ask the ouput amperage)
2. if the back cover bulges, it might crack the cover sooner or later..

what do you think ?

thanks

When I measured the output i didn't have a load on it, so I would expect a slight drop in the output voltage. I will measure the amps tomorrow, to see what its drawing I will plug it in to the Samsung 2A charger but i got a feeling its limited to what it can draw. I couldn't comment on whether it will fry the battery sooner but I will also measure the voltage to see if there is a drop.

The back cover has minimum bulge, hardly noticeable. You can always use thinner wire if your worried about the bulge like 'rj3005' mentioned about using 0.7mm. I highly doubt the cover would crack as its quite flexible in itself.

nm8 · Oct 23, 2012

Ryan_G said:
When I measured the output i didn't have a load on it, so I would expect a slight drop in the output voltage. I will measure the amps tomorrow, to see what its drawing I will plug it in to the Samsung 2A charger but i got a feeling its limited to what it can draw. I couldn't comment on whether it will fry the battery sooner but I will also measure the voltage to see if there is a drop.

The back cover has minimum bulge, hardly noticeable. You can always use thinner wire if your worried about the bulge like 'rj3005' mentioned about using 0.7mm. I highly doubt the cover would crack as its quite flexible in itself.

Can I just clarify one thing, do you mean the buldge is caused by the x2 cables that you soldered to the terminals and not the actual big circular coil (sorry don't know what its called). cheers

Ryan_G · Oct 23, 2012

nm8 said:
Can I just clarify one thing, do you mean the buldge is caused by the x2 cables that you soldered to the terminals and not the actual big circular coil (sorry don't know what its called). cheers

Yes the actual 'coil and charging circuit' doesn't bulge only the two cables you can slightly feel going from the charging circuit terminals to the galaxy note wireless charging ports.
Like I said the bulge is very minimal, nothing which concerns me but could be overcome my using thinner cable then what I used.

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

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