I am trying to disable USB charging to use my drone.
As of now, the controller charges the phone which in turn drains the battery on the controller.
I used to run this drone on a Note 5 that could be rooted and would disable USB charging by "batt_slate_mode 1".
This is the N960U, USA variant which cannot be rooted. If I change the USB setting in the drop-down or in developer menu it automatically reverts to charging when the controller is connected.
I know it's possible but I am not 100% sure it is possible without root but I will state the facts and hope that someone with knowledge and skills sees this.
Things I know:
-batt_slate_mode 1 will disable charging and the drone controller will not re-enable it.
-The Sprint Variant of the N960U has a hidden data menu "##DATA#" which has an option for USB Charging Disable (see attached)
So clearly it's possible on the phone itself but possibly might be locked out by carrier circumstances.
I use an OTG (ON THE GO) cable. Is this what you are using? I have an AT&T Note 9 & have never had the issue you describe. I use it with my DJI Spark controller.
Cable Matters 2-Pack Micro USB OTG Adapter (Micro USB OTG Cable) 6 Inches https://www.amazon.com/dp/B00GM0OZ4O/ref=cm_sw_r_cp_apa_i_QgMpDbVQX7EWT
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jd14771 said:
If I understand right, you are connecting the controller over USB with the usb-c to usb-a adapter?
Since the controller has its own power, could you buy a sacrifical USB cable and disable the power pins, leaving only data? Basically the reverse version of a charging only cable that has no data pins.. would be a hardware type solution as opposed to software since we have unrooted phones
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Yes a USB-C to USB-A cable.
Any idea which pins / wires to disable?
Actually, from what I read, devices need the voltage from the power pins to detect the USB etc.
So I think if this were to work it would involve a resistor or something similar.
Further advise is welcome. lol
Related
Not sure if this has already been discussed/discovered, but will it be possible to use the new Nexus dock "and" an OTG cable at the same time? It seems feasible given that the dock charges the device using the pin connectors which frees up the USB port.
One possible problem is that the dock also acts as a passthrough for data/audio so there may be a problem with the tablet trying to reconcile both sources trying to have simultaneous access.
I ask because it would be nice to be able to charge my Nexus 7 and utilize an OTG cable (for storage drives and game controllers) at the same time. I know there is an OTG Y-cable solution, but that involves rooting the tablet.
Has anyone already explored the possibilities of this combination?
Xenoterran said:
Not sure if this has already been discussed/discovered, but will it be possible to use the new Nexus dock "and" an OTG cable at the same time? It seems feasible given that the dock charges the device using the pin connectors which frees up the USB port.
One possible problem is that the dock also acts as a passthrough for data/audio so there may be a problem with the tablet trying to reconcile both sources trying to have simultaneous access.
I ask because it would be nice to be able to charge my Nexus 7 and utilize an OTG cable (for storage drives and game controllers) at the same time. I know there is an OTG Y-cable solution, but that involves rooting the tablet.
Has anyone already explored the possibilities of this combination?
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I read somewhere else that while docked, the device doesn't react to an OTG cable. This is just what I've heard, haven't seen it confirmed.
This guy did something similar, and the results are evident: Dock point is useless! Charge and OTG can not be carried out simultaneously!
Would be nice to know, if Timurs kernel, which allows charging and multiple USB would solve this. Have no dock, so I can not check. What I would like to have is something like the magnetic pogo charger which is annonced for Nexus 10.
Hi all,
I was wondering if anyone knew of a USB Y cable (with two male usb plugs converging into one female usb port) that could allow quick charge and data transfer so it could be used with Android auto? Both male usb plugs would need to be able to transfer data into the female usb port in order for this to work.
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I guess this wouldn't work and might also damage the head unit, but I'm no engineer.
If I were adventurous enough to risk frying my head unit and/or phone, I would follow this
http://www.instructables.com/id/Add...-hub/step3/Cut-the-VCC-wire-of-the-USB-cable/
and connect the output of the quick charge car adapter instead of the external charger.
Then would cut the Vcc wire directed to the head unit.
I don't know if the main hub cable (the one which normally goes to the PC) has to go to the phone or the head unit: who's the host in Android Auto? I'm inclined to think it's the head unit, since the phone connects in mtp mode. So my first guess is main hub cable to head unit, quick charge adapter connected like in the article, then big usb to micro usb cable to phone.
Maybe voltage higher than 5V would fry the hub, and maybe Android Auto connection is so picky (and it's picky, you know) that the hub circuitry wouldn't allow it. Who knows.
Again I'm no engineer and I'm scared to try
But I would buy a safe device tested for this use case, 10/10 :laugh:
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Use a usb y, but don't short the data pins to send it to high charge/current mode. You won't necessarily hurt the hu but you'll never connect to AA, the phone must detect the shorted pins to enter high charge mode. Which means the phone can't talk on the data wires. I find a 2a charger running at 1a plus the hu's usb keeps just ahead of the power usage.
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glowsti047 said:
Hi all,
I was wondering if anyone knew of a USB Y cable (with two male usb plugs converging into one female usb port) that could allow quick charge and data transfer so it could be used with Android auto? Both male usb plugs would need to be able to transfer data into the female usb port in order for this to work.
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Unfortunately, you can't have quick charge (2.0) and data transfer at the same time (at least with my Galaxy note 4). On a standard USB cable, you have 4 wires, two for data, two for power. On my GN4, the data pair communicate with the quick charger (I'm not sure exactly what the communication is, I remember reading somewhere it used the data pairs to communicate voltage, etc...).
Now, what I did do, was make my own data cable using 2 male type A adapters and connecting it all up to a a male microUSB end(Data pair is only connected to 1 of the type A male ends, I can't remember if I wired up the power in parallel). My AA head unit puts out less amps than my car charger, so even though I'm not getting quick charge speeds, I'm getting a bit more amps to charge with. So, one male end goes to my charger, one end goes to my head unit. I've been using it like this for over a year with no issues.
How much better is it than charging while connected to the AA head unit? Not sure. I'd rather have more amps than not enough.
Just buy a y. Cheaper and safer than self making.
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Nova5 said:
Just buy a y. Cheaper and safer than self making.
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Do you have a link? Can't seem to find anything that I think would work.
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Something like this: https://www.amazon.co.uk/Enhancer-Female-Data-Charge-Charge-Extension/dp/B00NIGO4NM
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Hi,
I want to clarify some aspects:
1) Qualcomm's Quick Charge doesn't work when the USB is in use for data.
2) Quick Charge requires a certified adapter (as it's an active function).
3) USB power can charge the device, however very slow... in fact with AA the device consumes battery when running.
So, my question is:
- Increasing the USB power current with an Y cable the device can be charged more quickly?
- And if this is true: the Y cable needs to block the current from the dta USB port of the car?
I like to comment these topics.
I'm thinking about using an Amazon Fire 7 inch tablet as a car radio dashboard install, but before I commit to buying one, I can't seem to find any conclusive answers on a few things.
Firstly, does the fire output USB audio so I can use a USB dac?
And if so, is it possible to use a Y split cable for USB audio and charging at the same time?
Any info would be greatly appreciated.
kcajjones said:
I'm thinking about using an Amazon Fire 7 inch tablet as a car radio dashboard install, but before I commit to buying one, I can't seem to find any conclusive answers on a few things.
Firstly, does the fire output USB audio so I can use a USB dac?
And if so, is it possible to use a Y split cable for USB audio and charging at the same time?
Any info would be greatly appreciated.
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I can confidently say this Fire like most other Amazon devices will not support charging while the USB port is being used for any other function. Can't speak to USB audio out (suspect not) as most go with Bluetooth.
Davey126 said:
I can confidently say this Fire like most other Amazon devices will not support charging while the USB port is being used for any other function. Can't speak to USB audio out (suspect not) out as most go with Bluetooth.
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It does seem to be a difficult feature to find on Android tablets.
According to Wikipedia, it's a simple implementation of a USB otg cable that should allow charging on any usb otg device.
USB Otg Wiki
The major problem (presuming the cable does work and usb audio is possible) is that the kernel needs to be able to enable USB otg at the same time as charging.
kcajjones said:
It does seem to be a difficult feature to find on Android tablets.
According to Wikipedia, it's a simple implementation of a USB otg cable that should allow charging on any usb otg device.
USB Otg Wiki
The major problem (presuming the cable does work and usb audio is possible) is that the kernel needs to be able to enable USB otg at the same time as charging.
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Click to collapse
Yep. The stock kernel on most consumer devices don't have robust OTG support as the most commonly used gizmo is a flash drive. I was able to get a OTG GPS receiver to work but it wasn't plug-n-play by any means. Charging didn't work in that context...although I didn't fiddle with it much.
I've been working on a kinda similar project, I just haven't had time. I'm trying to use my fire as an octoprint server, which is a program that monitors and controls 3d printers. The problem is that it requires usb to be connected to the printer, while also staying powered on. What I'm going to try is remove the battery, step down 12v from the printer to 3.7v and just hack it onto where the battery would connect to the pcb. I'm not sure what the different pins on the battery connector are though, so I'll have to test those. Otherwise, it should work.
Hello,
is there any way to disable reverse charging on P10. I use usb c to micro usb cable to connect DAC Fiio Q1 mk.2 it works great, but phone charges the DAC. So it limits the useability, because of fast discharge. I also tried classic OTG cable and micro USB OTG cable with original Huawei reduction, both with same result = reverse charging the DAC. In developer settings is default USB mode set to MTP. After plugin it goes to reverse charging and after setting it back to MTP in status bar it stops charging due to DAC but after 2 sec. it starts again.
Is there any way to disable it in software? Because on head-fi Fiio engeneer wrote how to solve it trougth cable mod.
But software solution will be much easier.
Thanks.
I have this same issue can someone help please?!
Does anyone know of a USB cable that it capable of supporting AA and has USB-C on one end (for device) and double 3.1 on the other end (to vehicle)?
I have 2 USB ports in my vehicle. The input port for AA does not charge the phone sufficiently when is running and the other port does fast charging but doesn't allow AA to run.
Thanks very much!
Welcome to the never ending problem! No, it is not possible to do what you want to do, that is, to be connected to AA and to fast charge your phone from an other usb port or car charger. I tried everything, including powered usb hubs, nothing works, unfortunately.
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Do you have wireless charging on the phone? Might be able to add a wireless pad in the car.
Note10.1Dude said:
Do you have wireless charging on the phone? Might be able to add a wireless pad in the car.
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Thought about that but I'm worried about overheating. I guess I might need to try it and find out?
Do not be worried of overheating, if the phone is connected to a usb cable and port and it detects charging, it will automatically disable the wireless charging.
The only way is to replace, if possible, car's charging circuit with a fast charging one.
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