Hi all,
got a bit of an odd one for you all to ponder over. I recently purchased a magnetic charging cable. One of these
http://www.ebay.co.uk/itm/201496892947?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
It has a very small adapter that plugs in and lives in the micro usb slot on my note 3. The cable end then attaches magnetically and away we go - charge and data - pull and it drops off. Pure magic.
The pondererance is how do I connect OTG devices? This adapter is a snug fit and designed to stay put. For socket damage I would also prefer it stay that way. The lead goes to a normal USB male. So to connect I think I need a usb Female to Female - such a thing does exist here
http://www.ebay.co.uk/itm/2-x-USB-2...515514?hash=item20cfdff93a:g:~9kAAOxy4t1Sf0rr
but I am unsure what is wired to what - and indeed what should be wired to what... So
1) is this the right thing - plug the magnetic lead into it then plug a USB pen in to the other end and away we go?
2) if not how should a female to female be wired? I have plenty of usb extension leads and am willing to cut a pair of them to make the appropriate adapter?
3) if there are no definitive answers how safe do you think it will be to try? I am thinking get the one from e-bay and then plug in a usb pen. Best case it just works, bad is the power is wrong and it kills the pen (upsetting but I can live with it). Worst case it blows up the phone. What chances do people think for just working or damaging stuff?
Open to any and all thoughts and suggestions...
Keverso
Personally, I would give it a try - learning by doing. But I think the chances are not quite high that it will actually work.
Here is a scheme of the difference between OTG and regular USB.
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Sounds good. Looking forward to it.
alphatact1cs said:
Personally, I would give it a try - learning by doing. But I think the chances are not quite high that it will actually work.
Here is a scheme of the difference between OTG and regular USB.
Click to expand...
Click to collapse
So - if I am reading this correct I take two extension leads - cut the female ends and join each colour to the same on the other lead (assuming both leads have the same colour code) and that should (with a little luck) work? That sounds easy enough. I am obviously worried about killing something but I have got an old galaxy 1 phone kicking about somewhere as well as a usb pen I would not be too upset to lose. I may well give it a shot this weekend and see what happens... I will report back if I do.
Thanks for the help.
Keverso
Related
This is something I made as a prototype/proof of concept test for something I hope to make for my S2, but since I only have Tab OTG adapters around and no S2 ones yet I made the prototype for the Tab
Anyways, this is quite simple. Take a USB OTG adapter, strip it down to where you have wires sticking out of a 30 pin connector, find a tiny USB flash drive, strip it down, and solder the two together so that the USB plug is still usable. End result is a small USB flash drive that can connect to both a computer and the Tab (not at the same time, obviously)
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Were I to make a V2 of the Tab version I would have located the USB connector on the side - which was always the plan with the S2 one, just didnt bother wit the Tab prototype
The connector is NOT proprieatry, its a 30 pin PDMI connector. Read it at everyone's favourite encyclopaedia: http://en.wikipedia.org/wiki/PDMI
So basically you can just solder pins 1,2,3,5 to your thumbdrive and pin 4 to pin 2, and optionally solder pin 15 to pin 6 for high power and you're set. Saves money on getting the expensive OTG thingy. The hard part is getting the jack..
arikyeo said:
The connector is NOT proprieatry, its a 30 pin PDMI connector. Read it at everyone's favourite encyclopaedia: http://en.wikipedia.org/wiki/PDMI
So basically you can just solder pins 1,2,3,5 to your thumbdrive and pin 4 to pin 2, and optionally solder pin 15 to pin 6 for high power and you're set. Saves money on getting the expensive OTG thingy. The hard part is getting the jack..
Click to expand...
Click to collapse
Have you verified the pin outs? Since the cables from original Tab can be used and it did not have a PDMI port I would guess that the Plus is not a PDMI port.
http://en.wikipedia.org/wiki/Samsung_Galaxy_Tab
It also has a 30-pin docking and charging connector very similar to the standard PDMI connector (a non-proprietary alternative to Apple's docking connector). It appears so similar to the PDMI connector that it is widely mistaken for it, but it is non-standard and all accessories, including charging cables, are incompatible with other equipment and only available from Samsung.
http://forum.pocketables.net/showthread.php?t=7722&page=2
http://fatmixx.com/2010/12/07/samsungs-galaxy-tab-has-a-familiar-looking-connector/
http://www.kineteka.com/galaxy-tab-connector.aspx
I attached pictures of the pinouts.
I was really disappointed with this when I found out about it yesterday.
Indeed nothing universal about Samsung...they even use a trigger to activate charging, effectively making all third party non.Samsung specific chargers and battery packs out there useless without an adapter
Does anyone know ANYONE that knows another spot on the Circuit board that I can pick up USB at? My issues is that the micro usb port was damaged. The pads ripped off the pcb and most of the traces. I tried removing the enamel from the PCB to get a solder point for data + and data - but to no avail. If anyone can explain or show me pictures where else on the board I might be able to get the 4 USB points at I would be ever grateful. I'm boot looped AOPK 29, can't get into clockwork recovery mode. Download mode works..but the PC doesn't even see the phone(not at all..not a driver issues 100% sure). If I can get the USB running..I can flash it back to operating condition. At that point I can manage to solder on a new micro usb port and get to the +5v and -5v so I can charge the thing. As I mentioned before its the + and - data signal I can't get. So even if you can point out where to get a hold of those that would fix me too. I can solder pretty small.
Or anyone forum where you have a feeling someone might have an answer or would be kind enough to look at a high res picture of the PCB and help me trace it. I love my mesmerize to death. I'd really hate to see it die like this..It might be "legacy" But it'll post over 2500 quadrant and runs fast and smooth.
Thanks in advance.
Arick - AKA Gigaah
Gigaah said:
Does anyone know ANYONE that knows another spot on the Circuit board that I can pick up USB at? My issues is that the micro usb port was damaged. The pads ripped off the pcb and most of the traces. I tried removing the enamel from the PCB to get a solder point for data + and data - but to no avail. If anyone can explain or show me pictures where else on the board I might be able to get the 4 USB points at I would be ever grateful. I'm boot looped AOPK 29, can't get into clockwork recovery mode. Download mode works..but the PC doesn't even see the phone(not at all..not a driver issues 100% sure). If I can get the USB running..I can flash it back to operating condition. At that point I can manage to solder on a new micro usb port and get to the +5v and -5v so I can charge the thing. As I mentioned before its the + and - data signal I can't get. So even if you can point out where to get a hold of those that would fix me too. I can solder pretty small.
Or anyone forum where you have a feeling someone might have an answer or would be kind enough to look at a high res picture of the PCB and help me trace it.
Click to expand...
Click to collapse
The data points are on the back of the board maybe this pic will help you
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Perfect! Thanks a lot.Now to muster enough soldering skill to hit those and not wreck things.
I'm interested in getting a car dock, but so far all of the docks I've seen only connect to microusb to allow you to charge your phone. If you want to get audio out, you have to connect a cable to the 3.5mm jack. Has anyone seen a cable or adapter that allows you to both charge from a USB charger and has analog audio out so I can connect to my stereo? I am aware that microusb does not provide analog audio out, however the android accessory development kit does seem to support audio over usb, so the cable would need to have some DAC built in. However I can't seem to find any. The only option I've been able to figure out would be to buy a USB DAC intended for a PC, connect it via a USB OTG cable, and splice in my charger. But this seems cumbersome and expensive.
Thoughts?
This is something I am interested in as well, however, I really don't think there's any way a dumb adapter could accomplish it without a DAC, like you said.
Probably the smallest option would be something like this, but still expensive; and since it'd be OTG, probably a pain.
My current attempt is to DIY a POGO dock (using the contacts on the back of the phone) out of one of these.
According to some work these guys did the contacts can function for charging and audio out.
I'll let you know if anything ends up working.
Well, I got all my parts in... and ended in failure
(I forgot to take pictures during, but here are some after the fact...)
I started with a Kidigi car dock:
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It holds the phone fairly securely:
But there are three problems:
It looks to have been built for the international version, since the usb plug is about a millimeter out of place. This isn't a problem... unless you're trying to line up tiny pogo contacts.
If you remove the usb plug, the phone falls out of the dock, damn!
The usb plug is modified so it triggers car mode when plugged in.
Anyway, I decided to forge ahead.
I was able to determine where the pogos go by lubing up the back of the phone and pressing it into the dock with some duct seal in between.
The construction of the dock was extremely convenient for this project; it was made of three pieces.
Two pieces are screwed together, and one clips in depending on whether or not you have a case on your phone.
I drilled the clip in piece to just allow the end of the pogo through, but not the whole thing.
Then I drilled the other two a bit bigger to fit the whole pogo:
I put the pogos through:
And epoxied them in on the inside of the two screw-together pieces:
All the connections worked!
I temporarily tacked on some wires to the pogos and was able to charge the phone.
However, even after playing with a ton of different resistances, I wasn't able to convince the dock to output audio from the other contacts.
I didn't know if it was because I was on a sense 5 rom, so I tried cleanrom 6.5 (basically stock), and JB aokp... no luck.
Long story short, I'm just going to use the dock as it was intended and deal with having two wires coming out of the phone
I try this one - http://www.ebay.com/itm/Black-3-5mm...Phone_PDA_Cables_Adapters&hash=item25825f2273
but no audio out on the 3.5mm jack
Hi,
If you know a bit of hardware you will find this usefull. The idea for the dock started quite simple: control the phone from the steering wheel using the USB port. Once that was ready the maker in me said:
"Hm, that is good but how cool would be to also charge the phone ... yeah USB Host and Charging does not work together but there have to be a way ..."
and once that was done again:
"Nah, it is crappy to put one cable for USB and another in the headphone jack for audio ... how cool it would be to channel the audio through USB also?"
And here it is how it all ended up (+lots of info how it works and how to build your own):
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.... nah, I am unable to post outside links ... if you want to know more check my blog: ivancreations
Best Regards,
Ivan
Do you have bigger pictures?
av911 said:
Do you have bigger pictures?
Click to expand...
Click to collapse
Yep, check out my blog, just search in google for ivancreations
Sorry but the forum does not allow me to post links
Too complicated for me, but what USB DAC are you using?
av911 said:
Too complicated for me, but what USB DAC are you using?
Click to expand...
Click to collapse
I believe it is plantronics brand, do not know the exact details ...it came broken in half (literally)
anyway - any usb dac will do (USB DAC == USB Soundcard) just check with OTG cable that you phone will recognize it and play musing throught it.
Cool stuff. Like mentioned before .. A bit too much for me to take on as I don't have enough free time to set up. If you got yourself into making and selling these then I think you'd be on to a winner. Thanks anyway.
tomorio said:
Cool stuff. Like mentioned before .. A bit too much for me to take on as I don't have enough free time to set up. If you got yourself into making and selling these then I think you'd be on to a winner. Thanks anyway.
Click to expand...
Click to collapse
If you are willing to:
* loose the ability to control the phone from the steering wheel
* loosing your cigarette lighter socket (a car charger should in there)
* have another cable hanging around for the car AUX
you may take a look at theiBolt docks - they can also charge the phone plus emit sound using the USB port (you do not have to connect another cable in the headphones output)
ivancreations said:
If you are willing to:
* loose the ability to control the phone from the steering wheel
* loosing your cigarette lighter socket (a car charger should in there)
* have another cable hanging around for the car AUX
you may take a look at theiBolt docks - they can also charge the phone plus emit sound using the USB port (you do not have to connect another cable in the headphones output)
Click to expand...
Click to collapse
Cheers dude will look into it. Having steering wheel controls would be sweet though.
I don't know if I'm the first one to say this, but I find wireless charging completely useless... I had an old '90s Motorola with a charging stand... I find that INFINITELY more useful than "Wireless charging".
First of all, the charger still has wires, so you're still stuck on a wall... Unless it has a battery attached to it, which is nice, though most scenarios where you use an on-the-go charger you are "on the go" and moving, so a normal external battery could do... (see third point)
Second. your phone is still during that time... You can't do anything to it... Why? Just so you don't need to put a wire in the port, to save some (1 second) time (?)
Third, it has ZERO stability. That's why I say that charger from 20 YEARS AGO was a lot better. You put your phone in and it charged. Same as Wireless charging, except that old Motorola didn't fall off and stop charging the second someone bumped into the table just a little bit. Or you are in a car...
I find wireless charging just good marketing taking charging a step back...
Also, the USB pins that keep the wire in my phone got crushed, so my phone right now can't be lifted while charging... PEOPLE ACTUALLY PAY FOR THIS???
PS: I found a "useful" use in cafes
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All you need to do is plug in the phone and "wirelessly" charge....
I can't see the appeal, either. I use my phone a lot whilst it's attached to the charging cable. You can't do that when you use a wireless charger.
My charging cable is 2 meters long. I can sit on the sofa and use my phone as an ereader or TV screen whilst it's charging. If I were to use a charging pad, I'd have to leave it on the table, which is not very convenient.
For me wireless charging is just a useless gimmick.
I find the potential of it interesting, rather than the current state that it's in.
It just seems a billion times more durable than the damn micro-usb port on EVERY Android device.
Maybe wireless charging is the solution, or maybe it's usb type-c.... we'll see i guess :]
Yeah I don't see the appeal either. Maybe it's good for coffee shops or restaurants where you don't use your phone anyways and it's lying on the table, so might as well get charged.