Hi all,
When I'm on the go I am using a brick-sized 8Ah 12V Lithium-Polymer connected to a DC-DC converter (that can provide 5A at 5V) to provide charging for my devices. I've hooked up a USB port with shorted D+/D- wires to provide for fast charging on most devices, it works on my SGS2 to charge it at pretty much the same rate as a wall-charger.
However I got a 2A charger with my new SGS4 (i9505). Does anyone know the correct resistor values for telling the SGS4 that it can charge at the full 2A? And does it need any resistors from D+/D- to either +5V and 0 as well as the single resistor between D+ and D-?
I've searched a lot for this information but I can't find a definitive table of resistor values for various devices and current combinations.
Many thanks in advance,
Descore
http://forum.xda-developers.com/showthread.php?t=2274321
I need your help
Did anyone figure out the resistor values for the samsung galaxy tablets?
I have these on my walls connected to a main power supply. How can we tell the tablets to pull the full power?
Descore said:
Hi all,
When I'm on the go I am using a brick-sized 8Ah 12V Lithium-Polymer connected to a DC-DC converter (that can provide 5A at 5V) to provide charging for my devices. I've hooked up a USB port with shorted D+/D- wires to provide for fast charging on most devices, it works on my SGS2 to charge it at pretty much the same rate as a wall-charger.
However I got a 2A charger with my new SGS4 (i9505). Does anyone know the correct resistor values for telling the SGS4 that it can charge at the full 2A? And does it need any resistors from D+/D- to either +5V and 0 as well as the single resistor between D+ and D-?
I've searched a lot for this information but I can't find a definitive table of resistor values for various devices and current combinations.
Many thanks in advance,
Descore
Click to expand...
Click to collapse
%Mike Bax - Tesotronics 2018, Tested & Verified to work
%This is a Matlab script
%
%USB charging resistors resistors for Samsung Galaxy A0 tablet
%R1 to +5V, R2 to GND, center tap to Dx, for each dataline (so two voltage dividers),
% then short the center taps of both 2 networks
r2=22e3;
ui=5;
vb=1.23; %target voltage measured on original charger
r1=((r2*ui)-(vb*r2))/vb;
r1=68e3;
uu=(r2/(r1+r2))*ui; %check
%E12 approximation: R1 68k, R2=22k
Can anyone recommend good MHL and OTG options for the S5? I ordered some micro usb3 OTG cables that were for a Note3 but they did not seem to fit the S5. I want to get high quality MHL and OTG cables. I don't want to deal with flaky connections from cheap cables.
Does anyone have any experience with these on the S5?
Thanks!!
Hello to All,
I was wondering if any solution is available to wirelessly charge the SAMSUNG Galaxy Tab 4 10.1 WiFi 16gb version?
This is for someone I know who finds it very difficult to plug the cable in to charge. So if you know of any solution at all, please share it.
Thanks in Advance.
You have a USB qi with charging module? Qi charging pad? Pretty straight forward. Of course you'll need to have access to your USB port and it will then be blocked.
Eachine QI Wireless Charging Receiver Film (Universal for all 1A Input Micro-USB Smartphones) https://www.amazon.com/dp/B00QIDGC8W/ref=cm_sw_r_awd_TLb6ub0SXN3R0
Greetings,
How can I get simultaneous use of OTG and mhl to work on my S5? SM-G900I
Thanks!
I have the Samsung Smart Dock, which provides that and works with the Note 4 (and some earlier Notes and Galaxy S). The water resistant port cover stops me from trying it with the S5 though, and I don't want to take that off right now. Unfortunately it's not easy to get an extension cable to try it either, due to the custom pin layout used for MHL on the S3 onwards.
@arghness thanks for the input - I found conflicting feedback saying it doesn't work with the S5. what is the model number for the smart dock you have? I'd really appreciate if you could give it a go
http://www.amazon.com/Samsung-Galaxy-Smart-Multimedia-Active/dp/B009QW3TBK#Ask
http://www.samsung.com/us/mobile/cell-phones-accessories/EDD-S20JWEGSTA
Samsung Smart Dock EDD-S20JWE, EDD-S20KWK, EDD-S20JWEGSTA, EDD-S20EWEG, EDD-S20EWE,
There are quite a few model number associated with this dock
Compatible with the Galaxy Note II, Galaxy S4, and Galaxy Mega (Not compatible with Galaxy Note 3 or Galaxy S 5)
Ah, okay. There are definitely posts (and videos) of it working with a Note 4 and I've actually had mine working with a Note 3.
On my S5, I can't even get the dock far enough in to the port for charging, due to the port protecting flap. Even without that, it might be an issue because the port is recessed in to the body so that the flap is flush with the outside of the case.
I still get the feeling that all the support is still there, if we could get a working extension cable. There's this: http://www.usbfirewire.com/Parts/rr-mhl-ext-xxg.html but I've heard that it doesn't even work properly with Note 2 (from an XDA post).
You're probably out of luck, sorry. I was hoping to be able to get it working as well.
hmm..okay, i've bought the smart dock, will give it a go when it arrives
jazzaddict said:
hmm..okay, i've bought the smart dock, will give it a go when it arrives
Click to expand...
Click to collapse
Any updates?
derekb123 said:
Any updates?
Click to expand...
Click to collapse
With further research
It looks like the S5 does not support simultaneous use of OTG and MHL as samsung implemented a 5-pin mini usb connector. Unlike the S 3/4 and note 2/3/4 where 11-pins mini usb connector enable simultaneous use of OTG and MHL. I don't understand why Samsung downgraded the S5.
More details:
http://en.wikipedia.org/wiki/Mobile...-USB-to-HDMI_adapter_and_tip_.28eleven-pin.29
jazzaddict said:
With further research
It looks like the S5 does not support simultaneous use of OTG and MHL as samsung implemented a 5-pin mini usb connector. Unlike the S 3/4 and note 2/3/4 where 11-pins mini usb connector enable simultaneous use of OTG and MHL. I don't understand why Samsung downgraded the S5.
More details:
http://en.wikipedia.org/wiki/Mobile...-USB-to-HDMI_adapter_and_tip_.28eleven-pin.29
Click to expand...
Click to collapse
So there's really no way to unlock this phone with broken screen then right?
derekb123 said:
So there's really no way to unlock this phone with broken screen then right?
Click to expand...
Click to collapse
I don't think it is possible
More info here:
http://www.galaxymhl.com/
Samsung probably downgrade S5 to a standard 5-pin micro usb connector to ensure broad compatibility with mhl adapater - this also prevented simultaneous use of OTG and mhl since in a 5 pins usb connector the same signalling wires are use for both mhl and usb-otg.
the S5 implement micro usb 3.0, I'm wondering if there is any adapter out there that can convert this into a 11-pin micro usb 2.0 connector??
jazzaddict said:
With further research
It looks like the S5 does not support simultaneous use of OTG and MHL as samsung implemented a 5-pin mini usb connector. Unlike the S 3/4 and note 2/3/4 where 11-pins mini usb connector enable simultaneous use of OTG and MHL. I don't understand why Samsung downgraded the S5.
More details:
http://en.wikipedia.org/wiki/Mobile...-USB-to-HDMI_adapter_and_tip_.28eleven-pin.29
Click to expand...
Click to collapse
That post doesn't say that MHL/OTG isn't possible with the S5, it doesn't mention the S5 at all. The pages I've seen seem to indicate that it's still 11 pin:
https://www.google.co.uk/search?q=s5+11+pin&oq=s5+11+pin
And other pages indicate that it can do MHL and have power, but that power is optional, unlike the S3:
http://blog.clove.co.uk/2014/02/05/mhl-adapter-samsung-galaxy-need/
They don't say whether OTG can be done concurrently, though, but I don't see why not.
I have a "11pin mhl v1.0 to hdmi adapter cable" that works fine with mirroring my S5 (SM-G900I lollipop) to an HDMI Display (Monitor or TV). The cable doesn't have usb input to test otg at the same time though. This cable also charges my S5 while mirroring.
I am interested in using my S5 as a desktop pc so would like to know if any one has had success with mirroring thier S5 on a TV/Monitor and using a Mouse & Keyboard at the same time!!!
TIA
any updates? Have someone found an adapter that does mhl and otg at the same time.... I have tried one adapter that does not work and asks several sellers on ebay about other adapters and all said either they don't know or it does not work simultaneously....
No adapter but you can use samsung sidesync between phone and pc.
sidesync? I want to convert my phone into a desktop/tv box and I don't want to use bluetooth
sidesync converts your phone in to an android pc using your pc's monitor,mouse,keyboard through usb cable or wifi. Your phone will display on the monitor like screen mirroring and you use your pc's mouse and keyboard to navigate and type.
sidesync wont work with tv because you need to install sidesync on pc.
ah ok thx interesting but it defeats the purpose of autonomy
I have an 11-pin MHL adapter (it's the long one which slides deep into the phone) which I used regularly with my old S3. I now own an S4 (SGH-i337M) and the adapter *should* fit and work, but does not do either. The plug won't slide fully into the connector; and sitting loose and halfway in obviously doesn't establish an MHL connection. When I shine a flash light into the port on the phone, it's clearly too shallow to accept the longer 11 pin plug.... which makes no sense as all specs and info on the phone indicate that the S3 and S4 should use the exact same 11-pin adapter. Can anyone explain this; or explain how I can use MHL with my new phone?