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Hi
I am looking for a way to charge HD2 without need to allways plug usb cable to mobile.
Inductive charging would be great, but we are not that far, but HD2 has power connector under his back cover, it is there for charging with car kit. Possible solution would be to use back cover with charging connectors and appropriate charging base. So I would just have to lay my phone on charging base without any connectors.
Is something like that on market?
Thanks
Martin
nope..........
There is in fact such a thing, but i do not know if it would work with the HD2.
I have seen something of that nature at cebit or something, really cant remember which computer convention it was, but it has been reviewed in various mag's
hxxp://www.berryreview.com/2009/10/30/gadget-of-the-week-powermat-wireless-charging-pad/
(change hxxp to http)
I have seen an inductive charging pad system at Carpone Warehouse in UK.
Technically, i suppose it would be reasonably simple for a company like Powermat, or other inductive charging manufacturers to make a replacement battery cover for the HD2 that ties into the contacts on the back of the phone, which were originally going to be used with the car holder, before it got redesigned, and allow recharging of the battery.
Well... Inductive charging... Would be nice.. But:
There must be a coil build in in the back cover and some regulator hardware. That is making the back cover thicker. This might be no problem if they do it right.
An other posible problem is the induction itsef. It is close to the electronics of your phone. What will happen with the signals and even can it damige the electronics?
I would like to have it, but only when it is tested and no risk of dameging the phone and disturbing the signals.
Well Powermat make back covers for iPhone, Blackberry, Nintendo DS so it can't be doing that much damage
has anyone seen a power mat backplate yet ?
I believe from the CET and CeBIT 2009 and 2010 technology was shown for the integration of current wireless charging in mobile phones. I believe HTC has added a second charging connection just below the battery, behind the battery cover. Perhaps a flat coid can be placed at the back of the current cover. The coil can be connected to the secondary charging connection. It was previously inteded by HTC to be used with a special battery cover that connected to the first concept model of the HTC HD2 carkit.
I believe Duracell or another battery company demoed a wirless charging system that could be integrated with current mobile phones. Maybe it is a start to look there?
Even if it worked for hd2 it would charge the battery at very very slow rates (typically @ less than 80ma)
I never have my phone charging through usb...only into my pc when im copying files or flashing Roms
I just got a spare Battery & Desktop Charger, as i work 12hour shifts (listening to music) it comes handy having a spare battery
As long as inductive charging is in it´s childhood-state it´s another waste of valuable energy.
Not for the single phone or person but taken together the ever increasing billions of users it´s a massive waste of resources.
Did You know that the worldwide use of internet (PCs, Notebooks, Netbooks, Phones, Servers, transmission lines, amp-nodes etc.) consume already more energy than worldwide car-traffic ? Should make You think ...............
Hello,
Two quick notes: The Palm Pre battery cover coil has its terminals on the correct side and very close to the charging terminals in the chassis of the HD2, given the amount of room in the chassis. Unfortunately, it looks like the EVO has a larger battery cover, and from the pictures I doubt that the coil assembly would fit length-wise under the HD2 cover. I'm not sure if there are electronics in the "tail" of the assembly, but if that could be removed I think it would be easy enough to find terminal block that would fit in the indent of the HD2. If you look at the Palm assembly you can see the bulge for the coil, the four bulges for the stabilizing magnets (?) and the terminal, I can't see what would be in the tail besides maybe a diode.
Unfortunately, though, the cover of the HD2 is made of metal, which I think would cut down further the efficiency of the inductive coupling of the coils, maybe critically so. If they're using 1A 5V supplies for the base, it might push the supplied charging amperage low enough that it wouldn't be useful. So I think that until someone fabricates a plastic cover, adapting the Palm Touchstone might be difficult.
I do have to disagree that the use of the principles of induction is anything but mature; these inductive charging systems are basically loosely coupled one-to-one transformers, if I'm not mistaken. Engineers made excellent use of inductive coupling a long time ago, if nothing else those tube amps that some folks like so much sure did.
Regards
Any idea what the order is for the contacts below the battery?
I have my palm pixi cover and touchstone. I plan to remove the cover and attach everything to a hard plastic back cover. I just need to connect it to the right terminals.
jamesbryant said:
Any idea what the order is for the contacts below the battery?
I have my palm pixi cover and touchstone. I plan to remove the cover and attach everything to a hard plastic back cover. I just need to connect it to the right terminals.
Click to expand...
Click to collapse
Unfortunately I have yet to find the pin-outs for these contacts. Please share them if you find the information.
You might get some information from this hack created by Derek Hughes. It looks like he has had a similar idea to yourself. Unfortunately he does not use the hidden contacts under the battery cover, instead he just re-routed the micro usb port, kinda messy and a bit impractical.
This hack was carried by many of the phone and tech blogs. But the links below are from Hackaday.
http://hackaday.com/2010/07/28/inductive-cellphone-charging-without-voiding-warranty/
http://hackaday.com/2010/08/01/update-custom-cellphone-induction-charging/
Good luck.
Can we combine or close this in favor of this one?
http://forum.xda-developers.com/showthread.php?t=762783&page=2
I received an e-mail from Powermat today and it looks like they have a receiver of some sort for various phones, HTC HD2 included. Unfortunately the unit is out of stock at the moment. Did anyone manage to snag one?
http://www.powermat.com/us/receivers/htc/receiver-door-for-htc-hd2.html
http://www.powermat.com/us/receivers/htc/receiver-door-for-htc-hd2.html
theres your solution
oh damit someone was before me well double means better! :>
gmontem said:
I received an e-mail from Powermat today and it looks like they have a receiver of some sort for various phones, HTC HD2 included. Unfortunately the unit is out of stock at the moment. Did anyone manage to snag one?
http://www.powermat.com/us/receivers/htc/receiver-door-for-htc-hd2.html
Click to expand...
Click to collapse
I would get one
seems nice, whoever gets one
please do make a Video
http://www.powermat.com/us/pick-a-b...at-wireless-charging-station-for-htc-hd2.html
So I plugged in my cradle attached to the watch, waiting for the charging sound and flashing battery icon... nothing.
I reckoned the cable might be loose, nope. Maybe the cable is faulty (it's a bit old but longer than the supplied one) Changed it... still no go.
Maybe the charger has developed a fault, swapped it for another Samsung one I have... still no charging.
Must be the watch or cradle, undid the cradle slightly, snapped it back together.. still not charging.
So I took it apart again and only then did I notice the cradle was the wrong way round!!!
How it's possible to do this is a bit of a design flaw. But at least it was down to me and not the hardware. I just thought I would share this dumb story with you in case it happens to you one day
Hi, I did the same thing just on the first day of use - good thing is that by reversing the watch there is no way to spoil anything, so no worries.
There is probably no point in making special "key" just remember which way to put the watch into the cradle.
I wonder how to design the power connector on the watch to allow to use just standard micro-usb cable - I think that it is not so easy, especially if we are talking about IP55 and for future GEAR II - hopefully IP68 - connector must be well protected against water ingress as it will keep the water inside when it gets there...
all rubber plugs and gaskets and so on are useless if we talk about true water tightness.
Hi!
First, I'm sorry for English, I'm not professional.
A few days ago I made a working wireless charger for Motorola Droid 4.
What are the benefits?
People says, the original inductive charging cover is not compatible with most of cases.
Who live away from USA, can't use a wireless charger, becouse it is only available (officially) in the US. It is very hard to find on eBay or any other site. Almost impossible.
Very cheap. The original charging cover at US, Verzion is $29.99. (+ shipping, and need a person who ship it to me) It is only a cover, and we still need a charger as well.
So, I found a charging pad with and without receivers. There was a small problem. The receivers are only for Samsung Galaxy S3, S4 and Note. Their connectors aren't compatible with Droid 4, but the charging voltage is OK.
We need to take it to compatible with Droid 4. I looking for a long time, which one can I choose. Fortunately I made the right decision.
I bought that: Qi Inductive Wireless Charging Upgrade Kit for Samsung Galaxy S3
Link here
That is only for $30.10 with EU plug. The package include charging pad, usb cable, 1500mAh charger and S3 compatible receiver, and worldwide free shipping.
The size of receiver unit is compatible with free space of phone. We need some cutting but it isn't horrible.
First, I recommend you try, how fits the module in your phone.
Then mark with a felt.
The electrical connector pins are big, (and incompatible) we need to remove it carefully. I used a rework station with hot air (360°C) but you can use a medium sized soldering iron. I think, about 50-60W of power is enough. It took for about 30 secs per pin.
It is important, you need to place the receiver in such a manner, if you remove the back cover, the S3 and some other text need to be visible! Otherwise it will not work!
You see backside of the phone, and the camera is on top. Removed cover. In the right side, you can see four copper pins. The top row is irrelevant. We need tha bottom row. In the bottom row, on the left tere is the +5 V pin. On the right, there is a Ground pin.
We need to make contact between +5V pin of the phone and the +5V charging pin of the receiver unit.
Place the receiver unit to the phone, and see what size of copper wire you need. The lower pin of receiver unit is the +5V. We need to connect it.
I used a wire,1 mm in diameter. It is lacquered, I cycled down it from an electrical part (coil).
I think, that half millimeter in diameter is enough, but a found that, and it is recommended due to the relative high current (about 1A).
When you use thinner wire, you can easier take the cover to the phone.
So you need to solder wire to receiver's +5V pin. Please use the minimum quantity of soldering wire, becouse if you make a big knot there, you will have not enough place to take cover back.
When it is done, you can see how can you bend (or cut) the wire for best connectivity with phone's 5V pin.
Now you need to solder a wire to ground, like the previovus one, but not sure, that the two wore have enough space, and we can make easily short corcuit.
For this reason, we will use the iron cover of the SD card slot. This is a very good ground point.
So, one cable will go down, other is go up. They can fit and the soldering is more easy.
PLEASE BE CAREFUL! I recommend, before you make any electrical or hot operating you need to put an aluminium foil or an iron plate to top of the battery. I think to taking out battery and then in, is not easily possible, becouse after soldering there are the receiver. The battery can damage and explosive! The plastic parts of pohone can tolerate the heat for sort time! If you can not solder succesfuly, you need to wait while the parts cooling down! I recommend, use flux and/or high quality of soldering tin. Take out the SD Card! Please don't make short circuit!
It is not too difficult, but you need to be careful and attentive.
When the soldering done, you can try the charger.
Before you can take cover to phone, you need to cut the lower center of receiver. (you can see on the cover, exactly where. There are a claw and on the phone there ara a hole) Important! We need all of holes on phone, so the wires must not hang in to holes.
I cut the piece of receiver unit from lower left side, at the speaker.
Thats all. We are done. I think it longer to read than make :cyclops:
I made some pictures, I will mark these and upload in short time.
I'm going to measure the charging time with:
1,5A USB charger (direct cable)
1,5A USB charger with wireless charging pad
1,5A USB charger with wireless charging pad (phone in a 1 mm thickness of Trident case)
0,5A standard laptop USB (direct cable)
0,5A standard laptop USB with wireless charging pad
0,5A standard laptop USB with wireless charging pad (phone in a 1 mm thickness of Trident case)
I use that from 3 days ago. It works correctly. By the factory, the charging current is 1000mA with the 1,5A charger. About 66% of efficiency.
The USB charger's stand by consumption is 0,4W.
When the charging pad is connected and it is in stand by mode, the consumption is 0,98W
I'm going to bring images, and refresh the post, but here (Hungary, GMT +1) the time is am 2:31.
Good luck guys!
---------------------------------
Uploaded images,
here are the original, better quality images. (11.5MB zip)
That great way to charge the phone. i know that my usb plugin is getting a little wore out.......glad to know that there another way to charge up the phone in case of emergency. Congrats.
Hi,
thanks, it works for me
My IQ receiver was a bit higher, or the battery, so I had troubles to fit it in. My solution was to cut every superfluous piece and pull the uper layer of slide away. Additionally, I put it a bit nearer to the camera, The last thing was to horizontally cut the gold contacts and solder the wire directly on them.
During charging, the usb charger+pad+droid 4 use 7W, without the droid 4 the pad+charger draw 0,4W, both measured at the primary side ot the charger.
Best regards,
mifritscher
Thanks for the info, looks promising I love your using Micro SD casing as GND
BTW the pad + receiver can be found at eBay for as low as US $12 Gonna try out for myself soon.
Did you get to measure the charge times?
LuH said:
Thanks for the info, looks promising I love your using Micro SD casing as GND
BTW the pad + receiver can be found at eBay for as low as US $12 Gonna try out for myself soon.
Did you get to measure the charge times?
Click to expand...
Click to collapse
Charging times are about equivalent
Different approach, same result
Hi, thanx 4 the great idea.
I took a different approach to install the charging pad. I felt not comfortable to solder directly to the phone, so I used copper-tape, capton-tape and some short wires I took from old headphones to mod the pad directly into the back cover of my phone. it got a little bit bumpier (half a mm), but it charges perfectly.
I applied some solder to the ends which connect to the pins, so the copper wont oxidize and the connection has more pressure.
The pictures in better quality:
View attachment goodquality.zip
zuloo.de said:
Hi, thanx 4 the great idea.
I took a different approach to install the charging pad. I felt not comfortable to solder directly to the phone, so I used copper-tape, capton-tape and some short wires I took from old headphones to mod the pad directly into the back cover of my phone. it got a little bit bumpier (half a mm), but it charges perfectly.
I applied some solder to the ends which connect to the pins, so the copper wont oxidize and the connection has more pressure.
View attachment 2842634
View attachment 2842635
View attachment 2842636
The pictures in better quality:
View attachment 2842637
Click to expand...
Click to collapse
That's a nice solution, and pretty much how the "real thing" was probably set up. I noticed that the back has an internal indentation where the pins are to accommodate the connector, and I had experimented with how I might fit a charging pad in there (actually, it was the connectors that I saw as the biggest challenge), but didn't manage to get anything that I thought was robust enough (I was using cut down parts of a SIM card for the pins to make contact with - you look to have done a better job with the copper tape.
I'm really surprised that we can't buy a new back with all of this gubbins already installed - perhaps you should manufacture a few?
mugen 3800mAh inductive charging cover required!!!
i'm tempted to try this myself. the droid4 keeps getting better.
i just experimented with cardboard, seems to have plenty of room between the cover and the battery. i definitely need inductive charging.
Update 2016
@zuloo.de
Hi! I copied your method for wireless charging but I was too lazy for soldering. That is why I used only copper tape. I ordered under 5$ charging pad and receiver for Galaxy S3 (cheap from China) and it is working good. My receiver says that it can output only 0.8A so I guess it is little bit slow. Can you tell your feelings about the heat? I think that my Droid 4 is pretty hot but I never used wireless charging on other phones so I don't know if it is normal. But thanks anyway posting your method :good:
Here is pictures. I tried to take picture about the bump. It is not bad but you can feel it.
I am considering buying an Xperia X because of the Wet finger tracking. My current Samsung doesn't support that, and since I do a bit of lobster and crab fishing, and I use an app (Fishing Points) to note what I get and where I put the pots, I am rather annoied with the Samsung since any drop of water on it will mess up my usage. And trying to dry out a phone in a small boat is kind of annoying. But then I see that the X doesn't support Qi wireless charging, and I have that in my home office, my car, on my motorcycle and next to my bed. Going back to where I have to actually plug in a cable seems so incredibly stone age. So are there any solutions for Qi compatible wireless charging that works on this, and that doesn't compromise waterproofing?
Mastiff said:
I am considering buying an Xperia X because of the Wet finger tracking. My current Samsung doesn't support that, and since I do a bit of lobster and crab fishing, and I use an app (Fishing Points) to note what I get and where I put the pots, I am rather annoied with the Samsung since any drop of water on it will mess up my usage. And trying to dry out a phone in a small boat is kind of annoying. But then I see that the X doesn't support Qi wireless charging, and I have that in my home office, my car, on my motorcycle and next to my bed. Going back to where I have to actually plug in a cable seems so incredibly stone age. So are there any solutions for Qi compatible wireless charging that works on this, and that doesn't compromise waterproofing?
Click to expand...
Click to collapse
Yes, add a USB receiver.
Thanks, I see that you have that phone! You mean with the flat cable going into the battery bay? I did look into that, but found that it will compromise the waterproof seal. Or is there a way to do it that doesn't?
Mastiff said:
Thanks, I see that you have that phone! You mean with the flat cable going into the battery bay? I did look into that, but found that it will compromise the waterproof seal. Or is there a way to do it that doesn't?
Click to expand...
Click to collapse
It's a receiver that connects through the USB port of the phone, it do e's not affect any waterproof seal, although you probably need to dry the usb port before charging, this is the same with all phone if it just came out of water.
Thanks! But do you mean that I have to plug that in every time I need to charge the phone and then put it in the Qi charger, or that it's stuck to the outside of the phone? In the first case it's really just another way of plugging in a regular charger...
Mastiff said:
Thanks! But do you mean that I have to plug that in every time I need to charge the phone and then put it in the Qi charger, or that it's stuck to the outside of the phone? In the first case it's really just another way of plugging in a regular charger...
Click to expand...
Click to collapse
Go to ebay and search for qi receiver, there are many available, although depending which one you get will vary in quality.
Yeah, I've seen those. I'm afraid they will be ripped off in my pocket, I think. So maybe the best bet is two phones and a twin SIM, so I have one for regular use and one for fishing. Or wait until spring and see if Sony gets their act together and actually deliver an expensive phone with the most common wireless charging option.
Just use a case with the receiver, sony knows about qi, they have a offcial qi case for the Z5, but decided not to use qi, and opt for fast charging instead.
Good point, a thin case with the receiver inside would probably be a good solution! Thanks! And Sony didn't think that one through. It makes it less likely that Samsung people, who often have a bunch of QI stuff from their phones, will convert. Fast charging is OK, but I prefer to put the phone into the car holder or on the bedside table and start charging without having to plug anything.
This one could be the right type:
http://d3rmje198d1rhf.cloudfront.net/graphics/450pixelp/58836.jpg
Mastiff said:
This one could be the right type:
http://d3rmje198d1rhf.cloudfront.net/graphics/450pixelp/58836.jpg
Click to expand...
Click to collapse
nillkin has the best receiver so far if you are in for a USB receiver, unlike the one's sold on ebay, they just use a thin sticker with the circuit in between, the nillkin uses thin plasic, and is very stable, I have the nillkin one for my XP and V20. USB is availabl;e in two version, A and B.
The offcial sony one is pretty thick, not worth buying, but that is for the Z5 only.
Thanks! I'll get that when I change phone, then. But the picture is of a case I can use on the phone, not a receiver.
In case anybody else wants to try this, it works. But not with the pictured case, that creates pressure on the back of the phone which gives color blotches on the screen. So I found my solution in a so called "Slim Rubber Gel Case Cover" and the Nillkin receiver. Problem solved, and it works quite nicely. I rarely need to to connect my phone with the USB, but it's quite easy to pop off the case and remove the receiver.
https://imgur.com/a/hhlTgw8
I'm super happy with the results
I bought a more expensive wireless USB type C charger that I thought would charge faster, since it was advertised as a 2000 mah (On amazon, it was gold), but once you open it up it seems to be the same cheap 1000 mah ones.
I did this because my phone is getting old, and I cracked the back glass, and I figured, while I'm inside... I might as well do it.
I had a blast, and I'm super happy with the results, it charges slow, but it works! and I can keep using my wired charger!
Syndor said:
https://imgur.com/a/hhlTgw8
I'm super happy with the results
I bought a more expensive wireless USB type C charger that I thought would charge faster, since it was advertised as a 2000 mah (On amazon, it was gold), but once you open it up it seems to be the same cheap 1000 mah ones.
I did this because my phone is getting old, and I cracked the back glass, and I figured, while I'm inside... I might as well do it.
I had a blast, and I'm super happy with the results, it charges slow, but it works! and I can keep using my wired charger!
Click to expand...
Click to collapse
That's a pretty cool project! Care to elaborate on the steps and materials needed?
One pointer from my end: do not leave this charging overnight or when you're away from the device! Though customizations like this are fun and interesting, they are also a common source of house fires. Risks are probably low here as it involves slow charging but you really don't want to risk it.
Timmmmaaahh said:
That's a pretty cool project! Care to elaborate on the steps and materials needed?
One pointer from my end: do not leave this charging overnight or when you're away from the device! Though customizations like this are fun and interesting, they are also a common source of house fires. Risks are probably low here as it involves slow charging but you really don't want to risk it.
Click to expand...
Click to collapse
I'm making the small guide and I'll post it later
The bad thing is I couldn't really take many pictures, since the phone is what I used to do that, so I'll be using some footage from ifixit teardown video.
So this all began when my phones back crystal panel broke on a fall.
I decided I had to replace it, so I ordered a new Transparent one, since like Jerryrigeverything I love to be able to see the electronics.
While I was at it I figured, why not add wireless charging to the phone? It should be possible, so I looked around for a guide, and I found this one:
https://www.instructables.com/Add-Wireless-Charging-to-Any-Phone-Using-the-LG-V2/
That was way sloppier than what I wanted, but it was a good read, and you can read about what he did.
You will need, a multimeter to check for continuity
A soldering iron, one that can regulate heat so you don’t damage anything, and with the smallest tip you can find
A donor charging receiver
Time and patience.
After that
With help from ifixit (link: https://www.ifixit.com/Teardown/OnePlus+6T+Teardown/115698 )
I opened up the phone, and since ifixit said there was no fingerprint connector you can just go at it, heat, and separate.
Once inside, disconnect the battery first.
The OnePlus 6T has a different design, there’s no pcb for the usb c on the speaker area, it has a connector that goes up to the main pcb, that snaps right next to the battery, since they had to make room for the optic fingerprint scanner.
So I removed the battery, so I could strip the layer of safety glue and make a little more room by peeling away a couple of layers, otherwise this wouldn’t close.
I started probing around with my multimeter for continuity, to do this, I connected the usb type c wireless charge pad (this one: https://www.amazon.com/gp/product/B087TW7MGK/ref=ox_sc_saved_title_4?smid=AQB8EOE9WF3ZF&psc=1 ) after I stripped the protecting plastic cover (to make it even thinner, and to see the insides).
https://forum.xda-developers.com/attachment.php?attachmentid=5118635&d=1603036807
So you connect it and probe the +Vbus and the Ground on that pad, at first I was a bit baffled, since it had pins on both sides, why if it isn’t carrying data, then I realized how stupid I was being, of course, it’s because it’s usb type c, you can plug it in both ways, and it needs to have the correct pins either way.
So I managed to probe around for continuity, and found out these are the correct spots.
https://forum.xda-developers.com/attachment.php?attachmentid=5118637&d=1603036807
I had to remove some of the plastic on the NFC cover to allow the wires to pass, you can see on the final image the route the wires had to take.
https://forum.xda-developers.com/attachment.php?attachmentid=5118639&d=1603036807
As you can see, I also jumped both grounds since it wouldn’t work if I didn’t.
https://forum.xda-developers.com/attachment.php?attachmentid=5118633&d=1603036807
The first one is beefier, but it wouldn’t fit since everything on the PCB was bigger, the thing is, they charged at the same rate when tested with a usb type c power meter around 680-700 mah of charging power with a 10 watt wireless charger.
I ended up using this other one which was cheaper, and also smaller, not as sexy, but that’s the price to pay.
https://www.amazon.com/Version-Wire...48&sprefix=type+c+wireless+cha,aps,185&sr=8-3
so all that was left to do, was place a nice thin sticker on my battery (I miss the red battery days) to make it look a little bit better, and close it up with the transparent back cover (also from amazon).
As a side note, I placed a USB C to C power meter, and these little things do seem to have sensors for when the battery is full, so they don’t overcharge or overheat.
So I left it overnight with a 65 watt PD USB C to C charger, and a wall plug power meter, and once it’s soldered in, it also seems to drop down the charging, and it also stops giving out heat when it’s fully charged, so there might be something on the small PCB for charge detection, or maybe it’s the phones own full charge detection and it stops asking for power, since this would be the equivalent of being connected with a cable.
Still, everyone should operate at their own safety and I’m not responsible if you set your house on fire, but I will continue leaving it overnight.
It charges slowly, but I can also plug in my dash charger, and again, it doesn’t overheat, the PCB on the wireless coil receiver seems to be doing something, maybe.