Develop Bugs

Wireless charging hack for HTC Desire

Hi all.
Im hoping someone can help me out.
In the process of building the wireless charging hack for the htc desire and the prototype works fine.
However at the moment i have connected the induction coil circuit to a micro usb plug which then plugs into the desire. This is an ugly solution!
I would rather solder the induction coil circuit straight to the circuit board but am having trouble identifying where to connect to.
Has anyone looked into this and able to show me a +5v solder point on the board near the micro usb socket?
Appreciate the help.

Hi all.
Sat down with my multimeter and the desire in several pieces! Lol.
Finally found the contact points on the main board for the micro usb power.
Have now attached the induction coil to the phone main board and slipped the back cover back on.
Now I have a a desire with wireless charging using the palm touchstone but still retaining the ability to charge via the micro usb if needed!
I love the desire so much! is there nothing you cant do?

tanv28 said:
Hi all.
Sat down with my multimeter and the desire in several pieces! Lol.
Finally found the contact points on the main board for the micro usb power.
Have now attached the induction coil to the phone main board and slipped the back cover back on.
Now I have a a desire with wireless charging using the palm touchstone but still retaining the ability to charge via the micro usb if needed!
I love the desire so much! is there nothing you cant do?
Click to expand...
Click to collapse
You going to post some pictures of that ???

Pics
duryard said:
You going to post some pictures of that ???
Click to expand...
Click to collapse
Good idea!
I spent ages trying to build a slim line micro-usb plug that could easily plug in and out if I needed to charge away from a touchstone but it was not very pretty and in my frustration I took apart the phone trying to find a points on the board instead! Initially I was planning on soldering to the micro usb +5v pin but that was way to hard so instead I searched for a contact on the pcb and eventually found one.
From the outside, the phone doesn't look any different from any other desire which I prefer.
Here are some pics. I can't take pics of the internals as I've put it all back together now and don't fancy the risk of breaking the tiny wires!
Attached some pics though as requested.

Nice project
Sent from my HTC Desire using XDA App

hi , i was thinking of doing this , when i got my phone apart i noticed two holes in the plastic that covers the microusb with two gold contact underneath, are these ground and 5+ i would check but my multi meter is bust

Hi,
this project is great and I also want to build this.
Could you please indicate the appropriate contacts which you used on one of these pictures:
http://blog.afkbio.de/index.php/uncategorized/anleitung-fur-displaytausch-bei-htc-desire-teil-3/
Did the copper coil together with the PCB (there is a PCB needed, I guess) easily fit into the HTC Desire casing? I tried to fit 5 sheets of paper there but couldn't close the case afterwards.
Do you have any more details? Will the Desire hold on the Touchstone or did you add magnets somewhere?

Hi.
Regarding the contacts, I used the 0v of the microusb socket.
The part of the pcb i soldered the +v to is not shown in those pics but if you look at pic 7, there is a square contact on the hidden side of the pcb connected to the microusb socket at the bottom of the phone. That is what i used.
I found that the case fits on fine and the phone is held on ok to the touchstone without any additional magnets but maybe that could be strengthened by thinning down the backcase a little.
i hope that makes sense. very hard to describe without pictures! i wish i had taken some when i did the mod!

I asked because I was afraid that I would need a "bigger" back cover as used by some extended batteries for the Desire. So you just extracted the coil from the Pal Pre backcover together with the board and put it on top of the regular Desire battery?

mikey887 said:
hi , i was thinking of doing this , when i got my phone apart i noticed two holes in the plastic that covers the microusb with two gold contact underneath, are these ground and 5+ i would check but my multi meter is bust
Click to expand...
Click to collapse
If you are talking about the ones to the left of the battery (the only ones i could find) thats +2.6V

Does it work through a case? Such as otterbox commuter?

con247 said:
Does it work through a case? Such as otterbox commuter?
Click to expand...
Click to collapse
I'll find out tonight, i'm going to destroy a powermatt cube and give this mod a shot.

Ok, so now I got my hands on a backplate and a touchstone and already disassembled the stuff.
The point is that I still need to know where to solder the 5V. How can I measure the various golden points? I have a multimeter, but where do I probe the black (mass) pin and where the red one (sample)???
I'm a little confused.

Qi Wireless Charging Pads w/ Extended batteries

Hey everyone,
I am really keen on having Qi charging and already have the pad and everything. I am looking to make the move to an extended battery (not the official one, which I hear works with the pads, but rather an ebay one, 4300mah, 4500mah etc with extended battery doors).
I know this will cause the contacts to be elevated above the spots requiring contact with the pad.
How are people overcoming this? I'd rather not solder to visible contacts inside the phone, and was curious how others have accomplished this and kept a consistent connection without permanently affixing it with solder?
Thanks!

Sean09 said:
Hey everyone,
I am really keen on having Qi charging and already have the pad and everything. I am looking to make the move to an extended battery (not the official one, which I hear works with the pads, but rather an ebay one, 4300mah, 4500mah etc with extended battery doors).
I know this will cause the contacts to be elevated above the spots requiring contact with the pad.
How are people overcoming this? I'd rather not solder to visible contacts inside the phone, and was curious how others have accomplished this and kept a consistent connection without permanently affixing it with solder?
Thanks!
Click to expand...
Click to collapse
I've heard of people using copper tape to connect both ends
Sent from my SCH-R530M using Tapatalk 4 Beta

zolo185 said:
I've heard of people using copper tape to connect both ends
Sent from my SCH-R530M using Tapatalk 4 Beta
Click to expand...
Click to collapse
Would like to see some pictures of this was thinking about doing it myself but wasn't sure if it would work, also would like to know which sort of copper tape they use..

Look for palm pre mod . It was the wireless charging mod before qi chargers were made for the s3.
Edit: https://www.youtube.com/watch?v=jHw1QIPwkZU&feature=youtube_gdata_player
Sent from my SCH-R530M using Tapatalk 4 Beta

zolo185 said:
Look for palm pre mod . It was the wireless charging mod before qi chargers were made for the s3.
Sent from my SCH-R530M using Tapatalk 4 Beta
Click to expand...
Click to collapse
He said he already has a qi pad, so that wouldn't work for him
Sent from my SAMSUNG-SGH-I747

the copper tape or copper wire trick will do.
there is a thread here where someone took a qi receiver pad and modified it to fit several extended batteries.. search this specific forum. it's there.

Qi Wireless Charging Receiver with Extended battery
zolo185 said:
I've heard of people using copper tape to connect both ends
Sent from my SCH-R530M using Tapatalk 4 Beta
Click to expand...
Click to collapse
I am also interested in charging the extended battery using the Qi Wireless receiver for my S3.
I purchased the recommended copper tape but had no success.
Are there steps somewhere in the forums that could show you the steps?
I do not want to solder anything to the contacts.
Thanks for your help

search this specific forum. there's a link or a thread here with a step by step.

Hi this post is a bit old, but I think very relevant today. Most tags will not work with an extended battery because of where the chip is located. I'm finding that it needs to be lower and the only ones that do that are the ones with a longer contact neck. I just purchased a 6400 ma battery and back cover for my s4... and discovered my qi I receiver tag will not work... unless I fool around with it a lot like putting a bunch of tape underneath that neck part to raise it on the short version. But with all that little bit of extra tape makes the back cover insufficiently loose because it can't snap-in because it's too thick of a battery. But I played around with a little bit as I told you above and got it to work but I couldn't keep the back cover on. So my in-enept modification failed... I read a review on Amazon or a gentleman got it to work but I notice his cute a receiver tag had the longer neck. I know the company tylt makes one, & I am calling him in the morning just to verify that is the one actally still selling.

Extended Battery + Qi Pad, Back Plate Doesn't Fit
I'm having a similar problem with my Galaxy S3 extended battery + Qi charging pad. I was able to modify the Qi charging pad to fit above the extended battery pretty easily, even though the end result is a bit kludgy. Basically I just soldered two thin wires to the contact points on the charging pad then used a piece of foam to space the wires appropriately. I wrapped this in electrical tape and tinned the ends so they'd make a solid connection to the phone contact points.
>I can't post links yet but you can see a picture of this on imgur: i.imgur.com/KJOU4I5.jpg
This worked great, except that the extended back casing that came with the battery doesn't fit properly when the Qi charging pad is inserted. The back plate that came with the battery is made of hard plastic so it won't bend leaving me with an extended battery + Qi charging but no back case. All the back plates I've seen on eBay look identical to the one I was sent. I'm going to try heating and molding the back, or perhaps sanding it down (though it's already pretty thin) but at this point I'm not super confident.

Making my own wireless charging case

So I'm looking into the possibility of making a wireless charging solution on my own. I have lots of wireless chargers at home, work, in the car, and I would really benefit from getting wireless charging working.
I took a USB Qi charging coil and soldered wires, which I then attached (well, just touched ) to either end of the magnetic connector, and it worked.
The difficulty I'm facing is, how can I keep these wires touching the magnetic charging port semi-permanently without doing anything dangerous like attempting to solder it directly.
So I'm wondering if anyone has any neat ideas of how I might rig this up. Any ideas would help a lot! If I come up with something good, I'll make a guide so others can do it.

You could try to get someone to 3D print a side piece similar to the one on the Z3 wireless charging case from sony: http://www.sonymobile.com/us/products/accessories/wireless-charging-cover-wcr14/
Have them leave chambers to run the wire through.

JCBomb said:
You could try to get someone to 3D print a side piece similar to the one on the Z3 wireless charging case from sony: http://www.sonymobile.com/us/products/accessories/wireless-charging-cover-wcr14/
Have them leave chambers to run the wire through.
Click to expand...
Click to collapse
I've been thinking about making my own wireless charging case similar to the sony branded case but using high quality leather, and an oem qi charging circuit with a 3d printed base clip with the circuit connectors integrated into the clip, just to ensure constant connectivity.
just looking into prices for scrap leather now.

duraaraa said:
So I'm looking into the possibility of making a wireless charging solution on my own. I have lots of wireless chargers at home, work, in the car, and I would really benefit from getting wireless charging working.
I took a USB Qi charging coil and soldered wires, which I then attached (well, just touched ) to either end of the magnetic connector, and it worked.
The difficulty I'm facing is, how can I keep these wires touching the magnetic charging port semi-permanently without doing anything dangerous like attempting to solder it directly.
So I'm wondering if anyone has any neat ideas of how I might rig this up. Any ideas would help a lot! If I come up with something good, I'll make a guide so others can do it.
Click to expand...
Click to collapse
Have you tried tape? It would be covered up by your case anyway, right?

PuffDaddy_d said:
Have you tried tape? It would be covered up by your case anyway, right?
Click to expand...
Click to collapse
I've thought of tape but I've yet to figure out a way to tape it where it will definitely stay in place.
I might be able to get a case that would cover it, but my current cases have holes so that magnetic chargers could be plugged in.

I've decided to try using copper tape to connect a Qi coil to the magnetic dock port. I'll see how it goes. Hopefully it will be as easy as I'm hoping it will be.

So I finally managed to make it work. Unfortunately, I had to solder.
I gave up with trying to line things up just right and keep it in place, so I just soldered a Qi receiver to the magnetic charging port, wrapped it around to the back of the phone, and fit in a case. It charges wirelessly now, so I'm happy. Unfortunately, I don't know if I'll ever be able to clean it up in the future if I want to sell the phone. But to me, wireless charging was super important. I was also able to continue using my Z1C battery case which uses the magnetic port, so I'm pretty happy with the end result.

Pics?

it's ugly, but I'll put up pics when I get a chance.

Pictures as promised. I had been concerned adding this might block NFC, but NFC works just fine. Obviously, magnetic charging cables don't work (but a Z1C charging case I have does.)
It adds some thickness behind it so the case doesn't fit quite perfectly, but well enough to stay on. I didn't have thinner cables, but having some might have been able to decrease the thickness. Also, I'm not necessarily good at soldering, so I just did what I could.
But I can charge it on my bedside table and in my iOttie Qi dock in my car, so I'm cool with it.

hmm not pretty, but i guess it works. how is the charging speed?
you should be able to clean it up fine if you use some solder wick.

Awesome job!
Can you please give us a link for the receiver?
All I can find are with usb

ugly doesn't even start describing it... seriously, you ruined that phone. You could've cannibalized a 3rd party docking station instead

duraaraa,
Thanks for blazing this trail for us, mighty brave to solder to your phone like that! Now that you've had this set up for a few weeks, is it holding up ok? I'd just about give my left nut for an actual phone case that simply has a wireless receiver built in and taps into the magnetic charger pins, but I doubt anyone will ever make one since (I believe) the Z3C is discontinued. I mean, they make those giant external battery packs for the Z3C that use the pins, so why not a qi-compatible one??? Anyway, no way I'm soldering to my pins so I'm basically trying to mold a connector out of epoxy that I can squeeze between the side of the case and the pins. (Basically I pushed one of my magnetic cable connectors into a clay bar and filled w/epoxy.) It's still drying so I have no idea if it's feasible at all, but wanted to pop in and say thanks for the inspiration.

mralexsays said:
duraaraa,
Thanks for blazing this trail for us, mighty brave to solder to your phone like that! Now that you've had this set up for a few weeks, is it holding up ok? I'd just about give my left nut for an actual phone case that simply has a wireless receiver built in and taps into the magnetic charger pins, but I doubt anyone will ever make one since (I believe) the Z3C is discontinued. I mean, they make those giant external battery packs for the Z3C that use the pins, so why not a qi-compatible one??? Anyway, no way I'm soldering to my pins so I'm basically trying to mold a connector out of epoxy that I can squeeze between the side of the case and the pins. (Basically I pushed one of my magnetic cable connectors into a clay bar and filled w/epoxy.) It's still drying so I have no idea if it's feasible at all, but wanted to pop in and say thanks for the inspiration.
Click to expand...
Click to collapse
hows your build coming along mate I'd love to see how it looks.

kstanley7 said:
hows your build coming along mate I'd love to see how it looks.
Click to expand...
Click to collapse
Not good I'm afraid my friend... My first attempt (trying to mold a connector out of epoxy using a clay mold) failed, the thing came out looking like a chewed up piece of gum and just wouldn't work. My next attempt involved slicing up a couple of cheap magnetic adapters and cables to try to trim down the connectors to something reasonably sized, but they become really brittle when you cut them that thin... Unfortunately, I think it'd take someone with some type of plastic molding equipment or maybe a 3d printer (that is capable of making really small, fine-detail parts) to make this thing. I'm still disappointed that Sony makes a wireless case for the Z3, but not the Z3C, but I've also come to realize that the Z3C has such good battery life that maybe I don't really need such a case. (I come from a long line of Nexus, HTC, and Samsung devices so I've become somewhat of a charging addict!)
tl;dr: Just enjoy the Z3C and use the handy magnetic dock for overnight charging.

just looking at the magnetic connectors on the z3c I think there might be a way but it'll add a couple more mm to the height, would need to get someone with a 3d printer, but if the wallet is made of leather and is inserted underneath, with the qi wireless pad, and two wires made into connection terminals which would then clip onto the phone so a solid connection is made between those terminals.

Just to answer some questions, it's held up. I think it's fine -- anyone desperate for Qi should just bite the bullet and solder. Charging speed is similar to really any other Qi-charged device.

apis10 said:
Awesome job!
Can you please give us a link for the receiver?
All I can find are with usb
Click to expand...
Click to collapse
Sorry my response is so late!
It's the USB type. I un-soldered the USB ribbon and soldered a wire for the two connections.
So you would want to buy the USB version, I think.

Look into copper tape. I attempted this a little while back but I think my charging pad wasn't powerful enough. What charging pad are you using?

wireless charging solution thread

As we all know, the new Zenfone 2 is missing wireless charging capabilities, however there are multiple solutions to enable wireless charging on basically any phone.
Example is http://www.amazon.com/BEZALEL®-Wire..._1_4?s=wireless&ie=UTF8&qid=1432149451&sr=1-4
It is a cover with a Qi receiver built in, which connects to the charging port and it also provides an independent micro usb port as a part of the case.
The absence of wireless charging in Zenfone 2 is a deal breaker for me ( don't judge) and as soon as an appropriate case is available, I'll get it and the phone as well.
Please post your findings here.

Would love to use wireless charging but using a cover like the one posted is out of question.
I love the slim form and feel of this phone. so i will have to live without QI and other solutions.

This will occupy the mUSB port but would probably be the best current solution.

hkdmjack said:
This will occupy the mUSB port but would probably be the best current solution.
Click to expand...
Click to collapse
That's pretty cool. I like wireless charging because I'd rather not wear out my micro usb...but that setup kinda marries you to wireless charging all the time. I'd have to rig up wireless charging in the car and at work...not just at home. You use something like that?

nathan118 said:
That's pretty cool. I like wireless charging because I'd rather not wear out my micro usb...but that setup kinda marries you to wireless charging all the time. I'd have to rig up wireless charging in the car and at work...not just at home. You use something like that?
Click to expand...
Click to collapse
Not sure if I'm going to stick with the ZF2, so I haven't gone out and done all that yet but qi adapters are pretty cheap now for both home and car. How effective some of the car ones are though are another story. iOttie has two models out now that look promising for the car.
There may also be the possibility of placing those adapters into a separate case just meant for wireless charging... remove the case if you need the mUSB port.]
Or... if they do release new back covers... get one that you install the qi adapter in and then one that you won't have the qi adapter in.

WHYYYYYYYYY
Why did Asus decide not to include the qi pins in the back ((((((((((((((((((((((((((((((((((((((((((((
>_<
what to do :'(

Here's a teardown: http://www.myfixguide.com/manual/asus-zenfone-2-teardown/
You could solder the DigiYes posted earlier (http://www.amazon.com/gp/product/B00HI8JYFE) onto the usb board. Or you could probably just jam the wires into the connector for a non-permanent solution. The pictures of the DigiYes are a little conflicting, but if it does have leads for the data pins, you'd be best off omitting them (you'll be limited to 500ma qi charging).
This is of course assuming there's enough space to wedge the DigiYes between the back cover and phone.

ziddey said:
Here's a teardown: http://www.myfixguide.com/manual/asus-zenfone-2-teardown/
You could solder the DigiYes posted earlier (http://www.amazon.com/gp/product/B00HI8JYFE) onto the usb board. Or you could probably just jam the wires into the connector for a non-permanent solution. The pictures of the DigiYes are a little conflicting, but if it does have leads for the data pins, you'd be best off omitting them (you'll be limited to 500ma qi charging).
This is of course assuming there's enough space to wedge the DigiYes between the back cover and phone.
Click to expand...
Click to collapse
Which goes back to my point. Why did Asus purposdely omit to include QI/wireless charging pins on the back? It would had cost them hardly anything extra at all, and users could just have changed back cover to get wireless charging...

That one http://www.amazon.com/BLUBOON-Unive...2630&sr=8-2&keywords=qi+wireless+charger+1000 is 1000mA, if it does make a difference. But a case integrated receiver would be much better solution, if ever.

olegy said:
That one http://www.amazon.com/BLUBOON-Unive...2630&sr=8-2&keywords=qi+wireless+charger+1000 is 1000mA, if it does make a difference. But a case integrated receiver would be much better solution, if ever.
Click to expand...
Click to collapse
I bought that model. I have a Qi charger (used with a Nexus 5) hooked up to a 2A USB Adapter, and it barely charges the Zenfone. I do not recommend. Maybe a 2A receiver would work better.

It's ridiculous.... why did asus decide not to offer a wireless charging solution similar to the previous samsung galaxies/lg.
Have the pins for charging on the back, and let the user change the case to a qi receiver case or add a qi receiver pad inside. this is honestly the only thing that disappoints on this phone (((((((((((((

ziddey said:
Here's a teardown: http://www.myfixguide.com/manual/asus-zenfone-2-teardown/
You could solder the DigiYes posted earlier (http://www.amazon.com/gp/product/B00HI8JYFE) onto the usb board. Or you could probably just jam the wires into the connector for a non-permanent solution. The pictures of the DigiYes are a little conflicting, but if it does have leads for the data pins, you'd be best off omitting them (you'll be limited to 500ma qi charging).
This is of course assuming there's enough space to wedge the DigiYes between the back cover and phone.
Click to expand...
Click to collapse
I just received mine and there is enough space in the back cover for the receiver to fit in, albeit with a small bulge. It does show my phone as charging even when just held up to my Moto 360 cradle; whether or not it's charging, however, I have no idea.

raynan said:
I just received mine and there is enough space in the back cover for the receiver to fit in, albeit with a small bulge. It does show my phone as charging even when just held up to my Moto 360 cradle; whether or not it's charging, however, I have no idea.
Click to expand...
Click to collapse
Thanks for trying. Did you actually solder or just plug it in the usb port? If you plugged it in the usb port, does the cover close without damaging the cable?
I'm asking because if that works, we could potentially design a slightly thicker but hollow back case that could hold NFC and the wireless receive without unnatural bulges.

ameel said:
Thanks for trying. Did you actually solder or just plug it in the usb port? If you plugged it in the usb port, does the cover close without damaging the cable?
I'm asking because if that works, we could potentially design a slightly thicker but hollow back case that could hold NFC and the wireless receive without unnatural bulges.
Click to expand...
Click to collapse
It closes fine but there is a bulge and the cover is left slightly open.
Here's my solution. Doesn't look good but functional.

don't judge
Click to expand...
Click to collapse
Yeah I judge, wireless charging its just another feature. A small battery, a slow processor or low memory now that's a real deal-breaker since your phone wont last a day, apps will run like hell and you will always have to micromanage just for things to run properly.
I'm way more pissed off at this phone not having a removable battery, not just because its a real deal-breaker during travel where I will be forced to lug around one of those brickish power banks but because Li-ION batteries have the lifespan of a mosquito. I already had 2 phones like that and the result was always a massive pain in the ass to deal with.
I rather buy a case with an extra battery than this thing

Three pins USB Board?
Hi there
Maybe some one knows, what are those three pins on the USB board, that are accessible without disassembly phone?? That should be connectors to charging instead of usb socket?

I have a qi charger built into my car. I do not like aftermarket charger added to the phone. So this is a deal breaker for me and will not consider any phones without buildin qi charger.

Looking to buy this phone and own a quick charging card like this. Is it possible to slip the card under the back cover (without a case) or will it cause it to bulge in too unsightly a manner?
dud89 said:
It closes fine but there is a bulge and the cover is left slightly open.
Here's my solution. Doesn't look good but functional.
Click to expand...
Click to collapse

Slooop said:
Looking to buy this phone and own a quick charging card like this. Is it possible to slip the card under the back cover (without a case) or will it cause it to bulge in too unsightly a manner?
Click to expand...
Click to collapse
It can but causes a gap near the usb port that I could not close. I would've run it inside if it didn't do that.

dud89 said:
It closes fine but there is a bulge and the cover is left slightly open.
Here's my solution. Doesn't look good but functional.
Click to expand...
Click to collapse
Great Idea.
The speed of charge is 350 MAH ?? Is to slowly (USB PC charge normally 550 MAH)

No Hassle DIY Wireless Charging

Hi,
After going through all possible options of connecting a wireless receiver to a magnetic charging port, and having no luck, I come up with something even more simpler.
Any soldering was not an option, as I wanted to keep my phone waterproof when I need it.
So I got these three things:
- Case. I was looking for something slim, preferably with covered magnetic port, since I'm not going to use it anymore. (this case I bought from aliexpress)
- MicroSD cover, didn't wanna ruin original. Cover has to be there, without it microsd will get lost.
- Wireless receiver itself. Any should do, but the longer is the cable the better.
After being using it for a month, even magnetic charging now feels like too time consuming to me )
Here's how it looks.

You cut the cover of the USB port and sd card slot? How could it be waterproof anymore?

gyuszi02 said:
You cut the cover of the USB port and sd card slot? How could it be waterproof anymore?
Click to expand...
Click to collapse
That's why I got a spare one, so I can replace it when I need it.

zhekazheka said:
After being using it for a month, even magnetic charging now feels like too time consuming to me )
.
Click to expand...
Click to collapse
Huh ? How so ?
It's only 800mA charging current on your wireless charger...that's like half of the original charger used with a magnetic cable(1.5A)

I see. I meant that it takes time, especially at night, to to align magnetic connector. As far as charging time, it takes about 4hrs.

I like this a lot. Thanks for posting. Where did you get the spare cover?
For me this would be most useful in the car. I'd still like to use the magnetic dock on my desk so now I'm off to find a dock-friendly case.

Do you have links to the stuff you bought for that?

How did you create such a small micro usb connector?