yashsingh1/xdaforums huggingface dataset:
[Nexus 5 Accessories] quentin0:
Peltier won't work without active cooling. If the surface is getting 50 degrees, the back of the peltier (the one facing the charger) would get higher and higher. Eventually the cold side of the peltier would get just as hot as it would without the thing, and if you don't do anything about it, it would get hotter. Not only that, you would run the risk of harming your Qi charger. If not the solder connections inside, the plastic on the outside. There's no such thing as a free lunch, you're just moving the problem.

Oh, and I'm pretty sure most peltier run off AC power. So you'd need a large converter handy. And you don't even know if the wireless charge would go through the thing...
[Nexus 5 Accessories] bleuxeon:
Did you ever read my last post?

I plan to run the TEC at the back of the wireless charger and NOT in between.

Of course there will be a heatsink and small fan spreading heat from Peltier's hot side.

The only problem is the power that it would require.

The real problem to me is how to move heat from the phone since there will be no or very small surface contact between the phone and cooled charger.
[Nexus 5 Accessories] quentin0:
How is that going to work? The phone is the thing that produces the heat, but you're going to put the peltier on the other end of the Qi charger? That's not going to be very beneficial at all. You're (at best) going to cool the coils in the charger, not the actual phone. This is like in order to solve your dry skin problem, you're going to give some lotion to your friend and then just hold their hand. You're still not going to have any airflow between the phone and the charger, which is going to exacerbate the heat that's normally coming from the phone on top of the heat being generated by the Qi coils in the phone.

I seriously doubt the heatsinks and a small fan are able to handle the heatdump of the peltier itself, let alone the additional heat of the thing you're cooling. Peltiers are wildly inefficient and you could easily end up heating your phone instead of cooling it. Even if you were able to make a sustainable cooling system running off of DC, this is supposed to be easier than plugging in a cable?
[Nexus 5 Accessories] claud0902:
I would just simply change my Nexus 5 battery if mine is to be toasted out. Also the N5 is not supposed to be a long life device as you will get a N6 in a year time.

To possibly reduce the heat generated from the wireless charging, I would only use an air vent mount so I can keep the charger and device away from direct sun light and get the air conditioner fan closely blow the back of the charger.
[Nexus 5 Accessories] AndyCr15:
How much would charging be diminished if you leave a mm gap between the charger and the back of the phone? Would this be enough to keep it cool and still charge? If the magnets were mounted just right, it shouldn't be too hard.
[Nexus 5 Accessories] JKingDev:
So I decided to go about this a little different. When I opened the charger up I noticed there actually was a small gap between the top of the charger and the coil. It also seemed that the positioning of the magnets did not really matter as they are attracted to the entire back of the N5. I decided to put the magnets inside and skip the drilling/gluing. I also felt that the magnets I had purchased were not quite as strong as the iMagnet magnets so I put 8 instead of 4. Picture attached. After putting it back together it held the phone pretty well. The texture of the LG charger is slightly rubbery but I still want to plastidip for more rubbery texture.

One problem though. It gets hot. Like really hot. I put the phone on it for a few minutes and charged about 2 or 3 percent. After taking it off the back of the phone and front of the charger were nearly too hot to keep my hand on. The N5 was reporting battery temo of 48 deg C. Is this normal for wireless charging or is my modification causing this? Perhaps I will take it back apart and see how it does in its stock form. I dont think it was doing this before I modded it. Is the magnet positioning causing this?
[Nexus 5 Accessories] pedxing:
I had to use a mount that could angle in front of an ac vent for the owlpad on the n4. Kept it pretty cold. Ice cold if you weren't running nav and a super bright screen.
[Nexus 5 Accessories] pedxing:
Yeah that sounds excessive. Mine gets to 50 but only after being on it for about 40 minutes. With only running music it will stay less than 40.

Is the coil coated with something? The magnets may be shorting some of the current and causing a resistor effect of current to heat. Also the magnets may be "receiving" some of the inductive current...with 8 it may be more noticeable than 4. Also the normal 4 mag position is slightly outside the coil meaning they won't induct much if any.
[Nexus 5 Accessories] JKingDev:
Yeah and mine was hitting 50 while idle! I thought the coil was coated but I think you are right, my magnets are right over the coil while yours are on the outside of the coil. Mine is probably inducing current in the magnets themselves causing some heating. I am going to try doing it just like you did and move the magnets to the outside and use just 4. I might go with some more powerful ones like these.
[Nexus 5 Accessories] Twerkeologist:
Maybe somebody could take the sides off of one of these and put some magnets into it?

http://m.ebay.com/itm/290980090821?nav=SEARCH&sbk=1
[Nexus 5 Accessories] JKingDev:
So just to update I moved the magnets outside the coil and now it works great. No heat issues. I drilled all the way through the top cover and the magnets sit completely flush. I still used 8 1/2" by 1/16" 3.2 lb magnets. Definitely use a forstner bit. I tried to drill the first hole with a regular bit and ended up with a small crack. Not visible after the plastidip though. And no drill press needed. I did 3 (admittedly thick) coats of plastidip. It is a little bubbly. I might go over with a few light coats to try for a smoother finish. It works great and holds the phone very well in the car. No problems so far. The tinkerer in me is kinda bothered by the way the USB cord sticks off the side of it though. Considering soldering wires to come out the back instead for a cleaner look. Maybe. Im not the best at circuit board rework but I have a great soldering tech. at work. Pics below! Pretty fun project. Thanks for the idea pedxing!
[Nexus 5 Accessories] pedxing:
Looks great, congrats!
[Nexus 5 Accessories] undercover:
Finally received my charger. Haven't ordered magnets yet as I wanted to see how deep can I go. Going for 8x5mm N42 magnets. Stretching it a bit, but should be able to find that 1mm. Charger is a no name thingie, which is also known at t200. Output is about 1A, tested with streaming and GPS and it was still feeding around 400mah. Magnets will sit flush with the rubber band and I'm still deciding on finish. Might just use filler to make smooth surface. Also sticking 4 in the middle for addition pull, hope that doesn't mess up charging but I hope it won't as no magnet will be sitting directly above the coil. Tests will tell.

Some pics of WIP.
[Nexus 5 Accessories] Jrmiller:
really awesome thread. :good: gonna have to make one now
[Nexus 5 Accessories] AndyCr15:
I tested, driving with magnets taped into place. WIth the magnets not sunk at all, a gap of maybe 2mm, the charger will hold steady with Bluetooth streaming music and GPS Navigation going on. It started at 48% and pretty much stayed there. Then I went to just streaming, but screen and navigation off and it would charge 10% every 30 minutes or so I think.

I think I'll try sinking the magnets, so I've ordered a forstner bit. Hopefully have more results on Friday or Saturday, with some pics or a video :)
[Nexus 5 Accessories] undercover:
Scratch that. Take 2.

Ordered 15x1mm epoxy covered magnets. Will just stick 8 of them as they are. You can see cut outs on last pic for them. Had i not drilled the hole in the middle I wouldn't have to mess about with covering it :( My bad.
[Nexus 5 Accessories] pedxing:
After using it for about a week everything's been going well. I have one tip though:

Keep an eye on it if you have vibration turned on....it started ringing and moving on the mount. It didn't fall but did rotate a bit.

I'm going to add a tasker task to turn off vibration while charging wirelessly.
[Nexus 5 Accessories] XorZone:
Will try to build my own version as well.

Bought:

1. This charger for $14.99 http://www.amazon.com/gp/product/B00F6SPYJS/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

2. 10x 1/2" x 1/16" Discs Neodymium Magnets

Testing charger before disassembling it. Will post update.
[Nexus 5 Accessories] AndyCr15:
I have this charger too. I can't separate the front and back though, so will just try and drill/forstner my way in a mm or 2 as it is.
[Nexus 5 Accessories] XorZone:
Yeah, just tested and charger is fine, guessing on how to separate it. Will post an update.

Let me know you progress as well, please.
[Nexus 5 Accessories] AndyCr15:
Will do. I'm away until tomorrow, but I've ordered a forstner drill bit, so I plan to remove the rubber ring and just drill 2mm deep into the top to sink the magnets in.

It kinda works with the magnets just sat on top of it, although if you have the screen on and music streaming, plus satnav, it's not enough power to charge, but manages to put in as much as is being used. Turn the screen off and it charges. I'm hoping sinking the magnets will up the input enough that it will charge at least a few % every half hour or so.
[Nexus 5 Accessories] Prfndhatrdofman:
This is awesome. I'd pay you to make me one haha
[Nexus 5 Accessories] XorZone:
Thanks for the info.

Got this puck separated, it's 6 clips/tabs around it, I started at microusb, they starts ~1cm from side of the port.
[Nexus 5 Accessories] idod89:
I simply glue it on brodit holder.

View attachment 2418756

View attachment 2418757
[Nexus 5 Accessories] AndyCr15:
Thanks XorZone. So everything is attached to the top. Hmm, so that doesn't help much. Does the board come away leaving just the top case/cover?
[Nexus 5 Accessories] manxam:
Ah, someone else with this eBay charger. How does the thing come apart? is the top just clipped on or are there screws beneath the silicone ring? I see screws in your first pic but can't tell if they went through the cover as the pic is quite dark.

I tried prying it apart to no avail and I removed a small section of the silicone ring and didn't see any screws. :confused:

Thanks!
[Nexus 5 Accessories] Nastybutler:
I've ordered a new Nexus charger from Amazon since it already has built in magnets and a sticky base, I'll see if how well it works in my truck. If I have to coat the surface with plasti dip and add some 3M double sided tape to the base to help it stick, so be it. I've got both items in my garage.
[Nexus 5 Accessories] peachpuff:
I bought the same charger and the thing don't work, it just clicks every second or so, the buyer says its for nexus4 and nokia 920 only... right.
[Nexus 5 Accessories] XorZone:
Yes, board screwed by 4 screws, easily comes off leaving just top and bottom separated.

But, I prototyped magnets on thin carton using packaging tape and while it's secure without case, with case it won't stick enough. I might just end up with something like shown by idod89, e.g. just attach base to the normal mount. Will se once I'll come home if there is enough space on my old arkon mount.

---------- Post added at 03:03 PM ---------- Previous post was at 03:01 PM ----------

Mine works fine, shows green light w/o phone and blue light with phone. Beeps once at charging start + charging sound from phone.
[Nexus 5 Accessories] undercover:
[MENTION=1206970]manxam[/MENTION], have a look at the previous page, guys have explained it in detail. You have to pay it open.

And here's my finished product. A lot of messing about to find an optimal configuration, but have I had to do it now, it would take me an hour. Please note I also added a lip at the bottom, will add pic later.

View attachment 2419139
[Nexus 5 Accessories] manxam:
[MENTION=3038832]undercover[/MENTION]: Wow, I think I missed a page. Went from 7 to 9 it seems :) Thanks for pointing that out. Time to start prying again!

Cheers!
[Nexus 5 Accessories] modplan:
What little mount is that? Did you just glue it on? Cant find anything like that on Amazon or Ebay but I'm not sure what to search for.
[Nexus 5 Accessories] kidgenius:
Try using thicker magnets. I've used 1/2",x 1/8" and they will hold through a case.

Also, what strength of magnets are you using? N42, N48, N52, something else?
[Nexus 5 Accessories] Jrmiller:
awesome job. :good:
[Nexus 5 Accessories] XorZone:
It's n45. I was unaware of different numbers.

Thinking of taking coil off the board and place an spacer to be able to fit 1/8.
[Nexus 5 Accessories] kidgenius:
The difference between n45 and n48 isn't much. But the 1/8 will give a ton more force. The problem with magnets is that the force falls off with either the cube or square of distance. So the farther away, you will need proportionally stronger magnets.

Go to KJ magnetics site and use their calculator to do some estimates.
[Nexus 5 Accessories] XorZone:
Thanks, will take a look.

Is that gray stuff between coil and board just foam or is it required to function? (Like in this picture http://imageshack.us/a/img707/4972/u3vj.jpg)
[Nexus 5 Accessories] kidgenius:
That's a piece of iron ferrite. Not sure if it is necessary, but it probably helps the coil work better.
[Nexus 5 Accessories] XorZone:
>> iron ferrite

Thanks a lot, that's what I suspected. Do you know if it is fragile? Do not want to damage charger.
[Nexus 5 Accessories] kidgenius:
In my charger it was about 1/16" thick. Probably a little brittle but you might be able to use some fishing line to seperate it from the plastic/glue on the plastic while leaving it attached to the coil.
[Nexus 5 Accessories] undercover:
I screwed it on Nokia cr-115 holder base. One downside, it doesn't stick to dashboard.

---------- Post added at 08:19 AM ---------- Previous post was at 08:17 AM ----------
[Nexus 5 Accessories] undercover:
Finished :)

View attachment 2420144
[Nexus 5 Accessories] Tigana:
Here's mine. I used 6 magnets and I'm glad I didn't use less but it holds fine through the ringke slim case.
[Nexus 5 Accessories] joenathane:
I followed OP's instructions and made my own, I'll post a video later, here are a couple of pics.

http://i.minus.com/ibwFi0BsY4RVm7.jpg

http://i.minus.com/iqvaorNquoEnG.jpg
[Nexus 5 Accessories] pedxing:
I changed out my mount to a longer neck one I had so that I could put the charger over the site vent. Here's the one I used:

http://www.amazon.com/gp/aw/d/B0017ZG538/ref=mp_s_a_1_1?qid=1385694847&sr=1-1&pi=SX200

And then here's the bracket that clips on the end that the charger is attached to...

http://www.amazon.com/dp/B00AK0S5ZM/ref=cm_sw_r_udp_awd_5DaMsb0JH7KK9

It was cheap enough that I just got it for the bracket part.

Worked perfectly....3 hour drive and it never went above 32c.
[Nexus 5 Accessories] Gr1771n:
ha, i just have constant trouble with my car fuses (my interior lighting hasn't worked in months, do you know how hard it is to find a 14 amp filament fuse:laugh:), you can always add another fuse slot in your wiring somewhere, of course its probably hard on a newer car like yours (judging from the pics) thanks for the idea, ill defiantly put one of these in my car, i'm going to try putting one under my carpet (i don't have a console, just a hump between the seats).
[Nexus 5 Accessories] b1g1an:
Excellent job, but I don't get why you need a ring of magnets if they are only the four little discs inside the phone?
[Nexus 5 Accessories] undercover:
Because I find it sticks better this way. Play around with a magnet and you'll see it sticks not just on them 4 pieces.
[Nexus 5 Accessories] b1g1an:
Okey dokey, thanks.
[Nexus 5 Accessories] AndyCr15:
I have a feeling my magnets are actually repelled by those in the phone, but stick to the rest of the phone...
[Nexus 5 Accessories] Bleys43:
From what I understand, there are no magnets in the phone, just steel plates that a magnet can attract.

But even if there are magnets, and they are not all oriented with poles facing the same way, it would be impossible for them to repel every orientation of your magnets, if you were to experiment and flip your magnets one by one to find the correct attractive orientation. There is no such thing as a magnet that repels both the north and south poles of another magnet. That would be a cryogenic superconductor, and that would make this the coolest phone ever, because then it would not stick to your magnetic dock, it would both stick and levitate a few millimeters away. Magic phone!
[Nexus 5 Accessories] undercover:
OK, sounds interesting.

*takes note for the next project

:D
[Nexus 5 Accessories] AndyCr15:
Yeah, I installed the cryogenic superconductors myself. Did I not mention that?
[Nexus 5 Accessories] undercover:
Pics or it didn't happen!
[Nexus 5 Accessories] xkravenx:
I have been trying a few magnets that I had and I feel there is no way they can hold the phone up. What type of magnet you guys use? n52 and what size? I am trying to build one.

I am using an HTC EVO 3D car mount.
[Nexus 5 Accessories] AndyCr15:
Oh no. I had pics, but my cat ate them :(

I'm using just N42, I have four and I can already see it will hold the phone.
[Nexus 5 Accessories] undercover:
I have 8 n42 with 1.1kg pull each. Although as there is inevitably some space between metal in the phone and magnets, pull is lower. It does hold it just fine, however, shall I ever encounter a problem I have my eye on n52 magnets with 3x that pull.
[Nexus 5 Accessories] xkravenx:
I just realized we have the same charger. Did you drill it to make space for the magnets or did you just glued it? Hard to tell from pictures.
[Nexus 5 Accessories] undercover:
Glued
[Nexus 5 Accessories] xkravenx:
Thanks.

Ordered Applied Magnets ® 10-pc N45 Neodymium Magnets 1/2" x 1/16"

http://www.amazon.com/gp/product/B00CDW94OG

Hope this is strong enough

and for glue

http://www.amazon.com/gp/product/B001Z3C3AG
[Nexus 5 Accessories] undercover:
I used self adhesive ones. But yeah, that should work I guess. You can calculate the pull, Google magnetic pull calculator. Kjmagnetics or something.
[Nexus 5 Accessories] XorZone:
Curious. Does NFC tags works on charger?
[Nexus 5 Accessories] JCreazy:
Looks like a fun project. What is the general consensus for the best size and strength of magnet to use?
[Nexus 5 Accessories] AndyCr15:
Attempt one hasn't really gone too well for me. I've sunk one magnet too deep and the others are a little uneven so the phone rocks slightly when I place it on. I don't think enough charge is going in, although I've not really been able to properly test it.
[Nexus 5 Accessories] undercover:
Shouldn't have sunk it. What dia holes did you make? See if you can cover with 15mm x 1 or 2 mm magnets. As long as they are at the edge, there will be enough current. What plug are you using?

And pics please, I'm curious and others might find it educational on how not to use it.
[Nexus 5 Accessories] the green man:
Has anyone tried this with the nokia charger?

http://www.att.com/shop/wireless/accessories/chargers/sku6290260.html
[Nexus 5 Accessories] quentin0:
Made one with the WCP300 and four N45s. Probably should've used 8, but the phone holds pretty good. I got the magnets a little crooked, I didn't spend too much effort measuring and lining them up properly, I just eyeballed it. I drilled a little bit, but it was making a huge mess with flying bits of plastic, and I didn't have a vise handy so it was extremely difficult and I felt like I was warping the plastic which would make the holes crooked. So what I did was place the magnets in my shallowly drilled holes and then I took out my trusty soldering iron held the hot tip on the magnet for a few minutes with a slightly firm bit of force. As soon as the magnet heated up the plastic around it and began sinking, I took the pressure off. That made it extremely easy to line up the magnets on the z-axis (to prevent rocking back and forth), because the plastic is still hot so you can push it down more if need be. It also sticks pretty damn well too, but I pried them off and dabbed some glue in there just to be sure ;)

The plastidip worked pretty good, but I had to do like 5 coats. You gotta be generous with the stuff, it's not as thick as I expected it to be!

I had a car charging cradle for my Droid Bionic that I mangled just so I could get some tilt axis. I just took a heavy pair of steel sheers and chomped away at it. I wasn't really expecting anything usable, but it worked out extremely well! So I just got some double-sided 3m tape and stuck it on and she's good to go! I'm lazy as hell, but it really worked out in the end!

I'll post some pictures when I get off work ;)

Now I just gotta figure out why my radio goes staticy whenever I use my only available cigarette lighter.
[Nexus 5 Accessories] undercover:
Brilliant idea with the iron, absolutely brilliant! Wish I thought of that, could have used thicker magnets!
[Nexus 5 Accessories] XorZone:
Well, according to http://www.kjmagnetics.com/blog.asp?p=temperature-and-neodymium-magnets magnets will start irreversible loose magnetization over max operating temperature, which is 176ºF (80ºC) for our magnets.
[Nexus 5 Accessories] rmsingh:
Nexus Qi Charger Mod suggestion

Have anyone tried opening the Nexus charger, replacing the magnets with stronger ones and attaching the charger to a car mount type (with suction cup) base for use in the car?
[Nexus 5 Accessories] atom_jack:
I had this problem with my previous car stereo, and was never able to figure out a fix. It was most likely a bad install as once I got a new stereo the problem went away completely.

I'm currently on my 4th Plastidip coat. I went with the iMagnet dock and the PowerBot PB1020 charger. Got a bit scared when my forstner went all the way through but it turned out to be fine, and the magnets are completely flush (except for the one that flew out of my hands and stuck to the magnet next to it and wouldn't come off due to the Gorilla Glue I used).
[Nexus 5 Accessories] JCreazy:
What size of magnets did you use?

Did you leave on the rubber ring on the charger?

Does your phone have a case?

Thanks
[Nexus 5 Accessories] atom_jack:
I got these magnets: http://www.amazon.com/dp/B00CDW94OG/ref=pe_385040_30332200_pe_309540_26725410_item

I would have had to drill through the rubber ring so I just took it off, and I also took off the one on the other side since I chose to glue that to the dock - the rubber ring on that side would have made it so that the glue would have to be only on the rubber ring so it seemed to make sense.

No case for my phone. I haven't tried it all out yet since the Plastidip is still drying.
[Nexus 5 Accessories] xkravenx:
This is a great idea. Going to the same once I get my magnets.
[Nexus 5 Accessories] mfab:
my very easy nexus 4 magnetic qi charger ... i use it in my car with a anti-slip-pad..

N52 Neodym 8x8x2mm
[Nexus 5 Accessories] undercover:
If it's holding n4 it'll hold n5 easy. Best one so far IMHO.
[Nexus 5 Accessories] xkravenx:
OMG. This is even better. Can you post the link for those magnets? I can't find them in amazon.

8mm = 3/8 inch?

2mm = 1/16 inch or 1/8inch?

Would this fit?

http://www.kjmagnetics.com/proddetail.asp?prod=B661

or

http://www.kjmagnetics.com/proddetail.asp?prod=B662
[Nexus 5 Accessories] FletchF:
Which charger is that?
[Nexus 5 Accessories] kresk:
Has anyone seen a type of car dock the will somehow fasten to area that is directly under the radio in some cars? I am not really in to having anything attached to my windshield. So far I haven't come up with any ideas.