Hello all,
I recently broke the USB port of my 1 year and a month old Gnex, I decided to disassembly the phone and change the USB Port & Main Mic circuit board completely (I try replacing a new port to the board but end up failed due to the tinny pins).
In addition to that, I bought a qi inductive charging receiver coil sticker, it looks like:
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and attached the connection to the pogo pins according to this thread (Adding touchstone to Gnex). The qi charging works but somehow my Gnex loses NFC function. It looks like there are some kind of shielding at the back of the sticker but they are sticking too tight together separating them will damage the coil.
To further improve that, I found a dual qi and nfc coil sticker for the Galaxy S4
The qi part is a piece of cake and well documented but I never find any details on the Gnex's NFC. The EB-L1F2HVU holds the NFC coil and connect to the phone's NFC circuit though a 4-pin battery connector:
It is known that:
1: +5V
2: Should be thermistor?
3: GND
4: ? Should be NFC related as some after market battery with no NFC functionality got 3pins only.
For the NFC coil, one connection must goes to pin 4 of the battery connector, to complete the circuit do you think I should connect the other end to +5V or GND? Any ideas? I bet it goes to GND as power for NFC should be alternating and it makes no sense to give DC 5V, what do you think?
Related
Hi ,I got this stuff,PIXI wireless charge set for cellphone:
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and this tool:
So I would like to make a wireless charger for Acro s.
Simple step like follow:
1. Cut the very thin molybdenum disk to 2 small pieces.
2. Solder it to the coil output, this 2 mo-disk will contact with the charging point of Acro S.
This is the pic finished. see, I put 2 tiny copper clamper to make sure it have a contact.
3.Disassemble the back cover of Acro S. Stick the coil to it.
4. Put the back onto wireless charger test output voltage. everything fine here. output voltage around 5.3V without load.
5.Put cover back and put phone onto charger. WOW.It's working!
But soon I find something not right. It's not working well, the phone is keep doing like this: charing -> discharing ->charing .... and cycle like this .
I measure the output voltage, I found this: the voltage at first is 5V, after around 3 seconds it drop to 0V, then rise to 5V again.The charger doing this again and again. so make the phone go charging -> discharging ->charing ....cycle?
Has anyone can give some useful information?
reverse engineer your steps bro..
maybe you cut the disks too small in step1 or maybe a soldering problem
boyheadkick said:
reverse engineer your steps bro..
maybe you cut the disks too small in step1 or maybe a soldering problem
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Good thinking. I will check my soldering, Maybe is really a contact problem. Things will go simple then.
ok so i wanna add another charging port out the back for my in dash vehicle install. can anyone tell me how to add another charger without soldering into the micro usb port? i tried checking the pins on the back cover to see if any of them was apart of the qi charging and if so i would of just soldered into the pins on the mobo to the qi connection. but fot the life of me i cant figure out what ones are the charging for the qi as i cant find any voltage on them. unless im missing something? i attached a picture showing the pins i tried testing. they would be easiest if i just knew what one was positive/negative.
can anyone tell me where to solder in wires for another charging connection that isnt at the micro usb connector at the bottom? (i cant use that as the pins are just way to damn small for my soldering skills.)
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quick update i found this, i found this image and it looks like the leads from the coil goes to the left of the cover but yet when i check for voltage when qi charging it doesn't show anything...
Why wouldn't you just use the wireless charging functionality that is already built in? Mount the charging pad behind it in the dash. I've seen a few people doing dash installs this way and it works great.
fury683 said:
Why wouldn't you just use the wireless charging functionality that is already built in? Mount the charging pad behind it in the dash. I've seen a few people doing dash installs this way and it works great.
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already tried that it works good until the tablet is fully charged, it quits accepting a charge until i unplug the qi charger or pull it away from the tablet and replace it.
When using one of these Wireless Charging Receiver Cards, Galaxy S4 only wirelessly charges uninterrupted when taken out of the case,
Otherwise the wireless charging turns on/off repeatedly. This happens even if the phone case has a hollow back.
Can you post what your experience was with wirelessly charging Galaxy S4?
If I'm understanding correctly, it seems as if the extra distance between the charging pad and the receiver when the case is on is probably causing the issue. Technically, it should be able to transmit power over a distance of around 4cm (~1.5 inches),but only in perfect conditions. Ideally, you want them as close together as possible, so a case is probably not the best idea. You might just have to weigh the pros and cons of having the protection of a case versus no cable charging. I use the official wireless charging S-View flip cover with THIS 3-coil charger and haven't had any issues yet.
Thank you for posting.
Interestingly, even a hollow bumper case like this:
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causes the same problem as the original Samsung plastic protective case - wireless charging gets constantly interrupted.
So *only* when case is removed does the wireless charging continue uninterrupted.
I sure would like to know what the culprit is. The receiver strip, or the case or the original Samsung charger?
I'm using this receiver that I got from Amazon, and I'm able to charge fine, even with a case on. http://www.amazon.com/gp/product/B00GCXRU8O/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I'm currently using a gel case, but I also had a hard rubber case that snapped on, and that worked fine as well. My wireless charger is a no name cheap brand I also got from Amazon.
Hey guys, I was looking at the /r/Nexus5 Wiki for a wireless charger and found that Choetech have released an updated model. It is only $12 ($10 with promo code 4F6LFSQU) and charges at 7.5W (the original, and most of the older chargers charged at 5W).
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It uses USB-C, which isn't very useful for the Nexus 5, but it is good for when you update to a new phone (even if the new phone doesn't have Qi, at least you'd have a USB C to A cable). Charging is faster than my old chargers (an old Nokia wireless charger, a RadioShack wireless charger, and a old Choetech charger) and It grips my nexus 5 pretty well, and my friends S7 didn't move at all with any reasonable amount of force. They switched to having 4 rubber strips around the edges of the pad to hold the phone, which is why it works so well with the S7's glass back. My dad's Nexus 6 works great too, despite the curved back, because the spacing of the strips ends up cradling the device. The bottom has 4 Rubber nubs to hold onto the table. They do the job but nothing to rave about. The unit is pretty thin (much thinner then all my other ones), in fact I managed to stick it in my car dock with a bit of Velcro and wirelessly charged my phone while driving. It does have an LED charging indicator on the front but I can say that it is night stand friendly, it is bright enough to let you know it is charging, without blinding at night. The only thing I dislike about this charger is that it doesn't include a power brick. Just the unit, the paperwork, and the USB C to A cable.
I'd rate it 4/5 stars.
Its not the perfect Wireless Charger, but it is the best one I've owned near this price
Amazon Smile Link: https://smile.amazon.com/gp/product/B01L3OUC7W/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
$3 off with Promo Code 4F6LFSQU
Hello!
I am looking for car holder/charger for the phone when its folded.
any recommendations?
i'm using this ZF3 car holder and this USB A to 2 USB type C cable to power the holder and charge the phone, and it works with the phone open and closed. to hold the phone closed, i shift the "hands/grips" part of the holder so they're vertical. when the phone is opened, the "hands/grips" are horizontal. see pics below; the yellow circle and check marks identify the USB-C connections. as an FYI, Android Auto works perfectly with the splitter cable.
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Been using this https://www.amazon.com/Xiaomi-Infra...634543193&sbo=RZvfv//HxDF+O5021pAnSA==&sr=8-3 since I had a Note 20 Ultra and now with Z Fold 3. When in the car I don't use the phone unfolded since it's connected to the radio anyway so I didn't bother getting a Fold specific charger.
kokobaliev said:
Hello!
I am looking for car holder/charger for the phone when its folded.
any recommendations?
Click to expand...
Click to collapse
Car mount
Any car mount holder for zfold3 to recommend? Unfold and fold. Thanks
forum.xda-developers.com
This one is great because it doesn't block my windshield nor my Android-based stereo screen and it wirelessly charges (the USB is from my stereo, otherwise if you don't have a 3.0 USB in your car, you can get a plug for the cigarette lighter): Nalwort Wireless Car Charger 15W Qi Fast Charge with Metal Frame Dashboard and Air Vent Phone Holder Auto Clamping Wireless Car Charger Mount Compatible for iPhone 11/XR/X, Samsung S20/S10 and More https://smile.amazon.com/dp/B08C2RGJPB/ref=cm_sw_r_apan_glt_fabc_NFX3GSBPCQSCEE17YE2Y?_encoding=UTF8&psc=1
I am looking for some vent holder to put my phone vertically without unfolding it
something like this
https://www.aliexpress.com/item/33000115439.html?spm=a2g0o.productlist.0.0.31e2404bnQQ8tR&algo_pvid=ec48fe93-88e8-4888-a294-00005a19cca3&algo_exp_id=ec48fe93-88e8-4888-a294-00005a19cca3-0&pdp_ext_f=%7B%22sku_id%22%3A%2212000016763776022%22%7D