What i steh port behind the battery cover? - HD2 General

As the title states, what on earth is it for? Some are saying its for the car kit, some say it's a charging port and I think we're all lost. Sorry I can't get a picture because the HD2 IS my camera! Anyone care to shed some light on this matter? I'm looking into a diy wireless charging solution and if these 3 pins are battery connectors, then I can use this port on the back.
Cheers!

ayilm1 said:
As the title states, what on earth is it for? Some are saying its for the car kit, some say it's a charging port and I think we're all lost. Sorry I can't get a picture because the HD2 IS my camera! Anyone care to shed some light on this matter? I'm looking into a diy wireless charging solution and if these 3 pins are battery connectors, then I can use this port on the back.
Cheers!
Click to expand...
Click to collapse
It's for use with in car hands free and GPS. You take the back cover off and just click the phone in and hey presto, it's all snug and secure.

Kalavere said:
It's for use with in car hands free and GPS. You take the back cover off and just click the phone in and hey presto, it's all snug and secure.
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Click to collapse
Any possibility of charging through this port? A few pin out diagrams would be useful but maybe I'm just pushing it now. haha

ayilm1 said:
Any possibility of charging through this port? A few pin out diagrams would be useful but maybe I'm just pushing it now. haha
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Click to collapse
most definitely there must be... since it does charge with the car kit it seems.
You should be ok by checking with a digital tester the voltage output from those metal contacts

ephestione said:
most definitely there must be... since it does charge with the car kit it seems.
You should be ok by checking with a digital tester the voltage output from those metal contacts
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Click to collapse
Good idea. I'll give that a shot now. If all goes as planned, great! But next, to work out how to jam an inductive coil behind the cover!

ayilm1 said:
A few pin out diagrams would be useful but maybe I'm just pushing it now. haha
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Click to collapse
You'll be lucky! I think, think, you can get some whereby you need to remove the battery and the cradle fits in it's place. I would Google it, but I am hungover and feeling lazy.

Kalavere said:
You'll be lucky! I think, think, you can get some whereby you need to remove the battery and the cradle fits in it's place. I would Google it, but I am hungover and feeling lazy.
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Click to collapse
Haha! big night out I see!

Hmmm. Can't seem to find my multi meter. Anyone able to test if any of these connections have something to do with the battery terminals? At least until I can get my hands on a multi meter.

Related

Phone struggling to charge.

Hello everybody. Recently, I had my phone go under a repair which involved opening up the entire phone just to replaces the mini usb port, which was detached from the phone and was trapped inside, losing its ability to charge.
Now, another problem has arisen. The phone has problems charging with wires compatible with its port. When I connect to it to charge via usb, it was plug-n-go, all good. For some unknown reason, it suddenly came under the issue that I need to shift the usb up,down, left, right, and slightly bend it the inside. Now, the original charger doesn't work because it broke, leaving the usb charger as the only option. I can't understand why my HTC Wizard is having this problem,and it's very frustrating. I paid sixty dollars for the repair on the USB, and it seems it hasn't done anything except reattatch it. Any suggestions?
Hey Infinity M,
By your description, it looks like the soldering is a bit loose, thus you have to shift the USB.
Have you tried with different chargers and cables?
If you wish (at your own risk), get a thin screwdriver or something like one, then apply a small force to all directions at the border of the Wizard's USB. Watch if it moves with any pressure, as that will indicate a loose solder.
Good luck, man!
nandobang said:
Hey Infinity M,
By your description, it looks like the soldering is a bit loose, thus you have to shift the USB.
Have you tried with different chargers and cables?
If you wish (at your own risk), get a thin screwdriver or something like one, then apply a small force to all directions at the border of the Wizard's USB. Watch if it moves with any pressure, as that will indicate a loose solder.
Good luck, man!
Click to expand...
Click to collapse
Thank you for your sufficient reply. I have not tried a different cable, and I have checked the Wizard's USB. I'll have to try another cable to check if it works. Do you know where I can buy a charger for a cheap price. Thanks!
Edit: Heh, I realized you're the same person making that HTC Obsidian Case, I'd love to pay you for it lol.
Infinity M said:
Thank you for your sufficient reply.
Click to expand...
Click to collapse
You're welcome
Infinity M said:
Do you know where I can buy a charger for a cheap price.
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Click to collapse
That's a hard one. I would send you straight away to eBay, lol, but I guess you can take a look at some local stores near you. It doesn't need necessarily to be a Wizard's charger. In fact, any charger for a HTC device that uses the same battery will do (the Tytn's I guess). Or you can check the charger label and see if it meets these requirements:
INPUT: 100-240V~0.2A
OUTPUT: 5V, 1A (this one being the most important of all)
Infinity M said:
Heh, I realized you're the same person making that HTC Obsidian Case, I'd love to pay you for it lol.
Click to expand...
Click to collapse
Dude, I'm almost conving myself to make more than one, lol!
Again, good luck man!

Strange... Battery cover as an antenna?

Did someone notice that on the inner side of the battery cover there are 2 spots which make contact with 2 pellets when closed.
What do you think is the purpose of that?
dunno know whats those 2 points. but it isn't the antenna.
Interesting. I hadn't noticed that before.
They do look like they are there for a reason, but what..?
Ankobarabanko said:
Did someone notice that on the inner side of the battery cover there are 2 spots which make contact with 2 pellets when closed.
What do you think is the purpose of that?
Click to expand...
Click to collapse
i think is a charging circuit for the htc hd2 car kit back panel
kobibz said:
i think is a charging circuit for the htc hd2 car kit back panel
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Click to collapse
I think it's probably the detectors for the car kit, so it knows when you've attached the back to the stand. I believe that there's an attachment that connects to the open connections near the battery & SIM for charging via the car kit, but I'm not 100% about that.

Wireless charging!

hey guys,
So i noticed 2 extra pins under the battery cover of my GN2 today! i looks like they are for wireless charging similar to what Samsung promised for the gs3. I don't really feel like waiting for the official wireless charging kit from Samsung so I'm going to attempt to make my own wireless charging back! I've seen videos like this before so i know it can be done! i have got the old inductive charger and back from my ancient palm pre so I'm going to give it a shot! just thought id spark up a bit of conversation about the topic and maybe learn a bit from some people who may already have done something similar!
I apologize in for the terrible grammar
thanks !
Isn't that for NFC? My original note had those and they matched up with the contact points on the battery cover and its nfc chip
imitenotbecrazy said:
Isn't that for NFC? My original note had those and they matched up with the contact points on the battery cover and its nfc chip
Click to expand...
Click to collapse
As you can see in his pic the Note 2 has two sets of pins... One set (the upper pins) is for the NFC that lines up with the battery cover and the other set (next to the battery) is "most likely" for wireless charging because I did my own mod for the S3 and it works perfect but until someone does it we don't know for sure??
that's NFC
guitarz said:
that's NFC
Click to expand...
Click to collapse
Just got it working! OMG this is sweet! haha tested it with some spare wires and it regonized that it was being charged wirelessly! now i just gotta make it look pretty and install it in the back panel of the phone! woo!
tomdroid3 said:
Just got it working! OMG this is sweet! haha tested it with some spare wires and it regonized that it was being charged wirelessly! now i just gotta make it look pretty and install it in the back panel of the phone! woo!
Click to expand...
Click to collapse
You do realize that we need pictures on that.
imitenotbecrazy said:
Isn't that for NFC? My original note had those and they matched up with the contact points on the battery cover and its nfc chip
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Click to collapse
nope thats just the top pins! the bottom ones next to the battery are for wireless charging i just got it working too!
Vulpix said:
You do realize that we need pictures on that.
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Click to collapse
hahaha well of course!! I'm documenting the whole procedure!
got some photos!!!
why didnt they advertise this anywhere
That is awesome....So how much would it cost if they were to sell a new back cover made for wireless charging?
cleankutazn said:
That is awesome....So how much would it cost if they were to sell a new back cover made for wireless charging?
Click to expand...
Click to collapse
The whole mod cost me $18.00 on my S3 so that's how much it costs for everything... It's real simple too! I KNEW those bottom pins were for charging but some people just kept saying both sets of pins were for NFC which would be WRONG.... :highfive: Follow this thread and you can get all the stuff on Amazon... You will probably need some of the stronger magnets though which are another $10.00 for 100 of them on Ebay...
LINKY:http://forum.xda-developers.com/showthread.php?t=1877191 Thanks guys for getting to this!!
can anyone clarify:
which pin is + and -
what is the max current (at 5 volts?)
and other than getting the correct voltage, is there anything else that a wireless charging back-plate would need to do? (I am thinking of making a simple one with a LM7805 + a diode and a coil)
I'm waiting for the official Samsung one. I hope it does 2A wireless charging ! hehe.
slapshot136 said:
can anyone clarify:
which pin is + and -
what is the max current (at 5 volts?)
and other than getting the correct voltage, is there anything else that a wireless charging back-plate would need to do? (I am thinking of making a simple one with a LM7805 + a diode and a coil)
Click to expand...
Click to collapse
magnetic fields only induce current when the field changes(think transformer). It's AC not DC.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
How long does it take to fully charge the phone? Because the palm's wireless charging module's output current is far lower than the samsung one as far as i knows.
It's limited in the kernel to .5A, optimally 6.2 hours.
xartic12 said:
It's limited in the kernel to .5A, optimally 6.2 hours.
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Click to collapse
What current? I thought current referred to electrons flowing down a wire. It is wire less.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
PaulF8080 said:
What current? I thought current referred to electrons flowing down a wire. It is wire less.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Click to expand...
Click to collapse
Mate. Wiki how a transformer works. Its basically 2 coils set next to each other. The coil in the dock has current flowing through it and this creates a magnetic field. This local magnetic field pushes the electrons around in the coil we have put in the back of our phones and tadaaa! Current. Electrmagnetism into Electromagnetic induction. So we dont want more than 0.5A in the case coil.
By the way see http://forum.xda-developers.com/showthread.php?t=1951493 for 2 common solutions to the mod (soldered and non-soldered) my non-soldered solution works a treat.
marc.tulley said:
Mate. Wiki how a transformer works. Its basically 2 coils set next to each other. The coil in the dock has current flowing through it and this creates a magnetic field. This local magnetic field pushes the electrons around in the coil we have put in the back of our phones and tadaaa! Current. Electrmagnetism into Electromagnetic induction. So we dont want more than 0.5A in the case coil.
Click to expand...
Click to collapse
Dude, I am an electrical engineer. It's more complicated than that. Only changing magnetic fields generate electric fields that induce current in a wire. The current is AC. 0.5A makes no sense, to me.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app

Does it have Wireless Qi charging?

Did not find much info on this
mangoman said:
Did not find much info on this
Click to expand...
Click to collapse
don't think so. it does support "fast charging", though i do not know what voltages/standards.
thanks, i need that. too bad
NO
QI charging with aluminium body? Hääää... ???
i think this will be not possible because the metal body fully isolate any induction coil!
Keyword: "Faraday Cage"
the only way i know is this way: click combinated with a softcase!
But if you will use this, some phone can not go into deepsleep mode any longer!!!! This will drain your battery too!
non-toxic said:
QI charging with aluminium body? Hääää... ???
i think this will be not possible because the metal body fully isolate any induction coil!
Keyword: "Faraday Cage"
Click to expand...
Click to collapse
Look here, Schlaumeier: Qualcomm is first to announce wireless charging for metal smartphones and more
and? do you feel better now??
anyway! QI-charging is impossible at this time and in the future!! The name of the new technology you told me is "WiPower"! It based on Near Field Magnetic Resonance! This is a absolutely different technology!
Info here
and for german users here

Nexus 5X - Qi Wireless Hack Mod

https://www.youtube.com/watch?v=imhoFe4bbFU
neat mod, but seems that it still needs further testing since its so new. qi charging at the end of the video.
very interesting, hope to see a video on how they do it!
danthepan124 said:
very interesting, hope to see a video on how they do it!
Click to expand...
Click to collapse
does anyone know whats the biggest qi wireless receiver pad on the market?
duckxtales said:
does anyone know whats the biggest qi wireless receiver pad on the market?
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Click to collapse
I have to believe it is something like the Tylt Vu. It has three coils and is quite tall.
This mod makes me happy as I wait for my N5X to be delivered but that theme just brings back a memory from the only time I've shedded a tear in a video game.
Sent from my SM-G920F
very interesting... Still really risky, you will have to void the warranty to do this and if you don't shield the heat or if the wire touches something wrong it could brick. Just be careful guys. Zsnaps is a safer alternative that makes charging simple. Wish they would ship already
Evo_Shift said:
I have to believe it is something like the Tylt Vu. It has three coils and is quite tall.
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Click to collapse
not charger. but a receiver pad.
Why can't someone make a bumper case for the 5X that incorporates a Qi charging coil and plugs into the USB socket? I think there are auxiliary batteries for some phones like that. That would work for me.
HankB said:
Why can't someone make a bumper case for the 5X that incorporates a Qi charging coil and plugs into the USB socket? I think there are auxiliary batteries for some phones like that. That would work for me.
Click to expand...
Click to collapse
im sure someone is going to make one. but not everyone likes to use a case.
duckxtales said:
... but not everyone likes to use a case.
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Click to collapse
Agreed. And (surprising to me) not everyone likes wireless charging. I hope the intersection of the two (and the 5x community) is big enough to warrant market attention.
I asked the poster ,xCubicle....
What's the large light grey patch on the inside of the back cover?
It can be seen in the ifixit teardown images at step 4.
Got the response...
"useless sticker. peeled it off."
I couldn't help but think back to the AMA
specifically the part "...Meanwhile, wireless charging adds z (thickness)..."
So what's the deal here with the blatant capability of qi wireless being designed into the rear case but the spec being deleted...?
It's because they did not want to give qi to the 5x and leave it out of the 6p because it has an aluminum body.
Crazy Chuckster said:
It's because they did not want to give qi to the 5x and leave it out of the 6p because it has an aluminum body.
Click to expand...
Click to collapse
I'm pretty sure you hit the nail on the head here.
It wouldn't have been as bad if they'd just said that, but the bull****ting about thickness as an excuse is not cool.
after further testing with the mod. i am indeed able to charge wirelessly up to 100% from 0%. i measured the wireless charging current and it seems to range from 100-500ma charge rate. a typical charger ranges from 1000-2500ma charge rate.
regardless, its a working mod so far.
i need to refine the wiring to layout to make it a bit more appealing before i offer it as a modding service.
Awesome news. Looking forward to potentially doing this mod myself!
Sent from my Nexus 5X using Tapatalk
Evo_Shift said:
I have to believe it is something like the Tylt Vu. It has three coils and is quite tall.
Click to expand...
Click to collapse
I bought this for my Nexus 7. Yep it is the largest one, you can even buy it from a Verizon store.
Charging time
Can anyone comment on the wireless charging time with the mod compared to the wireless charging time on the older Nexus 5 which had it built in?
In the same boat as many, where the lack of Qi has prevented me from upgrading
What will happen if wireless charging and USB Charging together?
Not even sure what happens now
To answer my own question form my last post. "Even the more expensive Qi modules appear to charge slower than the factory built in modules". Not sure what the reason for would be? Or people do not realize they are buying lower powered (yet more expensive) modules. Most posts I have seen refer to 500mAh modules

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