[Q] Wireless induction charging hardware hack - Nook Touch Android Development

See other threads on here or http://www.qianqin.de/2011/09/18/samsung-galaxy-s-wireless-inductive-charging-mod/ for me info.
So, I'm worried all the plugging and plugging of the USB port is going to break it.
It should be straightforward to put an induction coil inside the Nook. The battery is 3.7v and probably easiest to attach to direct... but that would mean no management of charging... and I presume a risk of overcharging. The USB port is probably harder to solder. I've looked at trying to make a low profile USB port saver from the outside without messing with the innards but I can't see a way to make it slim enough that it wouldn't get knocked and break the tracks off the mainboard.
The thing is, what length does the cable inside need to be for an inner induction loop? That's where I'm confused.

Related

Any way to alter the way defy handles usb connection?

Is it possible to change the way how the phone reacts to an USB connection?
Defy will only charge, if Data + and - are shorted. I need it to charge, even if those to pins are not connected.
I believe this should be possible. If the phone is off, and you connect only VCC and gnd, the phone will charge for a short period of time (until it starts up).
Any hints?
no one?
Explain the situation a bit more. How are you charging it? With pc it charges and USB chargers for in wall shorten the data.
yeah, that`s right.
My phone has an inductive charging mod - the problem is, you can`t wirelessly shorten the data pins
I`m now hoping, there is a possibility to change something on the software side of the device, so that it charges without the data pins connected/shorted.
I`m no developer, and I have no idea where to start. And I`m not even sure it is possible (well - I guess it should be - at least with a custom rom).
That`s the reason I ask here. I don`t want someone to do it for me - just poke me in the right direction and I`ll try it myself.
Someone did it before. He cut off a USB tip and shorted the data wires. Then you have to plug it in if you use the inductive charging or take it out if you need to use the USB.
that was me
but it would be much more convenient to have a usable usb port WITHOUT the hazle of removing and reinserting this very tiny plug.

Help! Bent pin in micro usb port, can't charge! Help me replace it!

My phone won't charge - the cable wobbles in the port now, and looking into the port I can see a copper pin bent flat against the back of the port. I tried fishing that pin out with a staple, no dice.
My question is, how hard would it be to replace the micro usb port using a $6 replacement from ebay? I'm sure I can disassemble and reassemble the thing without a problem, but I'm worried about soldering and desoldering - how intensive is it?
I've got like 50% battery left. I know I can buy battery chargers and keep swapping out the battery, but I'd rather not do that - this phone is my primary alarm clock Maybe it's time to say goodbye and upgrade to a higher end phone.

Make your own qi charger the size of a nickel? possible?

I know nothing about qi or wireless charging, so don't laugh if im asking too much but I just recently bought a Kenu Airframe for my car, and I love it! Very minimal. its nice. I was wondering if its possible to make your own qi charger, and whats the smallest it would have to be for qi devices (such as nexus 5) to successfully charge to it? I am planning a project soon to install a charger, and Bluetooth receiver inside my dash in my car, and so I wont mind hiding the internals for a qi charger on the inside of the car if its possible. My idea was something almost as small as those nfc stickers, but for qi charging, where the actual charging part could be the slim "nfc sticker" size, with the actual qi parts hiding under dash. is this possible?
unvaluablespace said:
I know nothing about qi or wireless charging, so don't laugh if im asking too much but I just recently bought a Kenu Airframe for my car, and I love it! Very minimal. its nice. I was wondering if its possible to make your own qi charger, and whats the smallest it would have to be for qi devices (such as nexus 5) to successfully charge to it? I am planning a project soon to install a charger, and Bluetooth receiver inside my dash in my car, and so I wont mind hiding the internals for a qi charger on the inside of the car if its possible. My idea was something almost as small as those nfc stickers, but for qi charging, where the actual charging part could be the slim "nfc sticker" size, with the actual qi parts hiding under dash. is this possible?
Click to expand...
Click to collapse
http://www.ifixit.com/Teardown/Metrans+MWT01+Qi+Wireless+Charger+Teardown/13532
look at a Qi charger teardown
the circuit board probably contains voltage/current regulation stuff along with other stuff, can hide it anywhere
you'll simply need to miniaturize that coil, probably similar to how NFC tags look like... there is some current output, range and efficiency relationship on how you choose the coil size, material, length, radius etc
paperWastage said:
http://www.ifixit.com/Teardown/Metrans+MWT01+Qi+Wireless+Charger+Teardown/13532
look at a Qi charger teardown
the circuit board probably contains voltage/current regulation stuff along with other stuff, can hide it anywhere
you'll simply need to miniaturize that coil, probably similar to how NFC tags look like... there is some current output, range and efficiency relationship on how you choose the coil size, material, length, radius etc
Click to expand...
Click to collapse
jesus, that's all there is to it!? this is exactly what I was hoping for! Would it be safe to assume nearly all qi chargers are built similar then? if that coil is any indication, you just might be right. I have a feeling though that the coil is that big for a reason. My guess is smaller might reduce power output, but if its the same concept, ill pick up a cheap charger on ebay to tear apart and play with, just to test it.
Here is the Kenu Airframe for anyone interested:
http://www.kenu.com/products/airframe
if you like small mounts, this sucker is really well built. price might be a bit much for some, but believe me, its worth it.
my idea is to use the small center "Kenu" plate in the middle of the mount for qi charging. One could make the coil somehow on the airframe, possibly in the size of a NFC sticker, and have it wired into a micro usb port on the back of the airframe mount. then on the qi charger size, where the coil is, wire that with a micro usb cord, and simply attach the two cables together. This would allow for any possible adjustments if you wanted to move the mount around.
EDIT: hmmm, a quick google search found this:
http://www.mouser.com/new/Wurth-Electronics/WE-WPC-Coils/
is qi charging really just a basic charger, just with a magnetic inductive coil instead of micro usb cable? is it really that simple?
The coils are specified by the Qi spec. i.e. you can't just use an arbitrary loop of wire. But, it should be relatively trivial to break open a charging pad and put its guts in a new housing.
Working from scratch, however, is complicated and fraught with peril. You'd have to get a chip (like IDTP9036) and wire it up. And no, actually "wiring" it won't work, you'd have to make a circuit board for it to live on.
sciguy125 said:
The coils are specified by the Qi spec. i.e. you can't just use an arbitrary loop of wire. But, it should be relatively trivial to break open a charging pad and put its guts in a new housing.
Working from scratch, however, is complicated and fraught with peril. You'd have to get a chip (like IDTP9036) and wire it up. And no, actually "wiring" it won't work, you'd have to make a circuit board for it to live on.
Click to expand...
Click to collapse
well, what I mean is, can you essentially use a regular wire, inbetween the qi coil, and the qi charging component itself? in the link provided by paperwastage, it looks as though all the qi charger itself basically is, is the qi component hardware itself, with the qi compatible inductive coil soldered in. by that concept, I am asking if you could TECHNICALLY add a regular wire between the coil and components, to essentially extend where the actual coil itself can be placed and used?
unvaluablespace said:
well, what I mean is, can you essentially use a regular wire, inbetween the qi coil, and the qi charging component itself?
Click to expand...
Click to collapse
You could likely add small extensions to the coil. Though, I don't have enough experience with them to know exactly how much. Personally, I would be wary of adding more than an inch or two to each end. However, you could always experiment and see what works...
Qi help
the distance between the coil and the output board, is going to effect how much power is lost internally.
the size of the coil, the wire size, the wrap (basically anything that affects the field strength) will effect the efficiency.
you'll note alot of the Qi pads out there use 2A draw to power them, but only transfer power at between 500-1000ma....and they only guarantee the lower limit. (i'm guessing because of production variations, like how accurately the coiling is laid down, whether the copper wire had high or low contamination the day it was drawn, etc)
this is where knowing the Qi spec, and tuning your antenna coil comes into play.
all that being said, GL !
I was doing some reading here and there, bought a few cheap qi coils and pcb boards. I was trying to request a sample of TI's new PCB board/coil that does not require magnets(so we can continue to use NFC, and possible compass issues.), but when I tried to request a sample their website would glitch out, may try it again sometime soon.
Did you get anywhere with this? I am trying to extend the distance between the PCB and coil and am unsure of what cable to use.

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)

P605 dead, what to do next?

My P605 has no sign of life.
Internal charger doesn't seem to be working at all. So I've charged the battery with my bench power supply, resoldered the battery connector. Measured the connector on the board and it shows battery voltage. When connected through a USB power monitor the device doesn't seem to draw any power whatsoever though.
Is there some common hardware problem I should be looking at apart from dead battery/bad battery connector?
I do have a hot air rework station, fairly decent soldering skills, bench supply and oscilloscope but nothing super fancy,.
Anduhroid said:
My P605 has no sign of life.
Internal charger doesn't seem to be working at all. So I've charged the battery with my bench power supply, resoldered the battery connector. Measured the connector on the board and it shows battery voltage. When connected through a USB power monitor the device doesn't seem to draw any power whatsoever though.
Is there some common hardware problem I should be looking at apart from dead battery/bad battery connector?
I do have a hot air rework station, fairly decent soldering skills, bench supply and oscilloscope but nothing super fancy,.
Click to expand...
Click to collapse
The usb assembly tends to fail & can be cheaply replaced, but as you already charged the battery externally, there must be another problem.
I found it difficult to attach the connector of my new battery, required a lot of pressure, and to arrange the battery cable such that it won't push up the connector. There was hardly room for the battery cable, as it was two or three millimeters longer & the wires quite stiff.
lecorbusier said:
The usb assembly tends to fail & can be cheaply replaced, but as you already charged the battery externally, there must be another problem.
I found it difficult to attach the connector of my new battery, required a lot of pressure, and to arrange the battery cable such that it won't push up the connector. There was hardly room for the battery cable, as it was two or three millimeters longer & the wires quite stiff.
Click to expand...
Click to collapse
I will check the USB assembly just in case it might affect something. Better to be safe than sorry
What would be super useful would be a schematic/diagram, but I guess that there is no maintenance/service manual available anywhere is there?
Fugget about schematics etc.
The usb assy costs less than $10€,fortunately, but also contains the buttons and leds, which makes replacement a bit more complicated.

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