Database Users

Request: mini USB pin layout

Hi I'd like to know whats the USB pin layout on the O2 Atom as my mini USB plug fell off and I'm trying to solder it back to gather.
So far i manage to get it charging again but I cant get data through it.
Also I wonder if anyone can tell me how to make a USB charging cable so that i can plug it into the PC and charge without activesync(without using WM5storage, just plug and charge) or I can charge via car charger(I know this can be done with a special adaptor but I'd like to make my own)
Help is very much appreciated Thx.

well i suppose that no one really know about it so if possible for those who already have thier Atoms opened up, take a high ress pic of the USB plug showing the pins and post it for me.
thx

akromatic said:
Hi I'd like to know whats the USB pin layout on the O2 Atom as my mini USB plug fell off and I'm trying to solder it back to gather.
So far i manage to get it charging again but I cant get data through it.
Also I wonder if anyone can tell me how to make a USB charging cable so that i can plug it into the PC and charge without activesync(without using WM5storage, just plug and charge) or I can charge via car charger(I know this can be done with a special adaptor but I'd like to make my own)
Help is very much appreciated Thx.
Click to expand...
Click to collapse
Switch off the device (remove battery) and use PC to charge , thats the only way

udayrulz said:
Switch off the device (remove battery) and use PC to charge , thats the only way
Click to expand...
Click to collapse
actually i have a cable(which came with a universal battery pack) that allows me to do what i want but its in a bad shape hence I'd like to make another.

usb is pretty much usb htc's carry audio too but people report that normal miniusb in 1 end and usb in the other works just fine
and any device connected to usb's 5volt and ground get power even if the pc dont see it as a usb device it still provide 5volt and 0.5amps to them
thats how usb cup wamers and plastic dogs humping the usb port works

See here @ Wikipedia for details on pin-outs

Please help asap nexus 7 car install otg timurs usb not seeing usb power

I installed it in my dash and removing it is a pita it was working perfectly fine but for some reason it wasnt showings charge or turning off or on with the car it just stays on i tried restart nothing happens i tried unplugging usb from powergen and plugging back in no result
Also if i go to usb rom under fixed installation i am able to check box and uncheck also did nothing
I am using nexus 7, timurs usb rom, otg cable, original charging cable and powergen usb charger
Please help thanks

Anyone???

I'm also using Timur's kernel with USB ROM for my car installation. I know that it can be very picky on the order the USB plugs are added (data and power). It may seem simple but remove the the OTG cable from the tablet and remove both the data and power legs from the OTG as well. The follow the order listed by Timur on his website:
To activate charging, you must first connect your external power supply to your OTG Y-adapter - then plug the OTG adapter into your Nexus 7 - and then connect any slave devices.
Click to expand...
Click to collapse
Hopefully that should get you back up and working. I completely understand how frustrating it is to have everything plugged in and see that tablet isn't charging, especially when its difficult to get to the Nexus itself.

does anyone have a easy charging solution these car chargers dont work
and a good otg y cable

You could try using a power inverter which will give you a standard US plug from the cigarette lighter. From here, you could plug in a regular outlet adapter. I found this to work pretty well with my own set up and managed to get one pretty cheap at Walmart. As for a good OTG y cable, your best bet is probably to go on Amazon and find one with a lot of good reviews. They can vary in quality and some of the cheap ones I've gotten from China have flaked out after a short time and little use.
Sent from my Nexus 7 using xda app-developers app

Not seeing usb power
I had the same issue. I was using a 90 degree adapter into an OTG cable and my n7 wouldn't go into fixed install mode. Turns out my adapter cable was stopping the n7 from recognizing power. I removed the 90 degree adapter and plugged straight to otg and it worked as advertised. The issue was found during my bench testing on a 12v powersupply. I still have to find a 90 degree otg cable that will work.
So... try a different cable or if you have an adapter between the otg y cable, that may be the issue.

USB - Wiring for ADB?

Hi folks!
I want to connect an android device (it has usb slots... i can plug there 3g dongles, keyboards, wifi etc) with my computer to try to establish an adb session.
Is that possible like that (usb male - male)? Do i have to solder a custom cable - and how would he wiring be to force the android into "client mode"?
Any help is highly appreciated!

licht77 said:
Hi folks!
I want to connect an android device (it has usb slots... i can plug there 3g dongles, keyboards, wifi etc) with my computer to try to establish an adb session.
Is that possible like that (usb male - male)? Do i have to solder a custom cable - and how would he wiring be to force the android into "client mode"?
Any help is highly appreciated!
Click to expand...
Click to collapse
to wiring an usb cable is not so hard. normally you only need to solder the same coloured wire together, red to red, white to white, green to green and black to black. but there are already male to male cable to buy.
www.dx.com/p/ult-unite-ult-1234-usb...lated-data-connection-cable-white-60cm-269067
what does your android device have for an usb? is it micro usb or standard (type a)?
if you have a micro usb port so use an usb data cable, most of the charging cable does have data transfer support.
your computer even needs a driver for your android device to get working the adb.
good luck!
ps. on ytube there a lot vids how to... only search and destroy ( your android)

KindsKoPP said:
to wiring an usb cable is not so hard. normally you only need to solder the same coloured wire together, red to red, white to white, green to green and black to black.
ps. on ytube there a lot vids how to... only search and destroy ( your android)
Click to expand...
Click to collapse
Hi! Thanks for your help! Its a type A jack on that device just like on the computer. Adbd daemon is on the device running but my windows machine cannot detect an usb device with direct soldered pins (or a bought cable which seems to have the same wiring)
I read about possible collitions when both devices of an usb connection are in host mode and that maybe pullup resistors on the data lines are needed - but i didnt fully understand that part. (Its different to the pin shortening of an usb otg wiring which can be found thousand times on google *G*)

can u describe exactly which cable u have used? and sometime the colors of the cable are not correct e.g. red is not +. those are build by chinese manufactures for cheaps goods. so u have even to measure the cable with a voltmeter.
and describe what happen when u plug the cable in the pc. normally windows is always running as main and android as slave.
as you describe u have an usb a type so i guess your android version is minimum 4.x and is already automatically on host status because you said u can put in a 3g dongle...so u have to go to the android command change from inside. i dont know much about linux programming so have to ask a developer. i only do developing hardwares not softwares, sorry for that.
what is your android device? with a datasheet is it better to solve your problem.

Hi KindsKoPP!
Thanks for your help and interest!
Basically I tested with a 1 to 1 wired cable I soldered by cutting 2 usb cables. I double checked colors (measured their output when connected to the computer) and found them ok. Then I connected them 1 to 1 (red-red, black-black, green-green, white-white).
But no usb device showing up or asking for drivers...
I know that adbd is running on the target device.
I pulled up some info here: http://www.valki.com/2014/12/04/analyse-av7/
I am still hoping that those usb devices who are in a double role (like our phones too with their usb otg host mode and client mode for mtp, adb...) are triggerable externally by using special soldered cables (resistors?) ... like "when resistor xy is on D+ -> go to client mode"?

Purchased Android 5.1 2GB RAM HU - Can't get USB Hub to work.

Purchased this HU:
https://www.aliexpress.com/store/pro...747116176.html
So far it works great. I really like it and its a huge improvement over my first 4.4.4 HU as I can use the ENTIRE 16 GB for storage.
Unfortunately even still I am running into one problem. I cannot get any USB HUB I plug into it to become detected. If I plug a USB Flash Drive DIRECTLY into the USB plug of the Head Unit, it becomes detected and works right away. If I plug it in behind ANY USB Hub, the unit does not see the flash drive. It also does not see the USB HUB. What could be going wrong and is there anything I can do to fix it? My older Android 4.4 unit could use the same USB HUB right before I de-installed it so I know the HUB's are still functional.

maybe not enough power. Can you try a powered hub?

I'll try this, Something weird happens. When I turn the car off and reboot the radio by turning the car back on, the USB hub will be seen as long as it was plugged in when I turned the car off. If not, it wont work. Also it will only see 1 flash drive instead of 2. What gives?

Need4Camaro said:
I'll try this, Something weird happens. When I turn the car off and reboot the radio by turning the car back on, the USB hub will be seen as long as it was plugged in when I turned the car off. If not, it wont work. Also it will only see 1 flash drive instead of 2. What gives?
Click to expand...
Click to collapse
That really sounds like a power supply issue. If the head unit can find the hub *ever*, then it means it has the needed driver for it.

doitright said:
That really sounds like a power supply issue. If the head unit can find the hub *ever*, then it means it has the needed driver for it.
Click to expand...
Click to collapse
So I tested by powering my USB Hub to an AC Outlet charged by an wall in my garage with an extension cable and made sure the USB Hub lit up before I turned my car / stereo on so I verified it was receiving power but unfortunately this did not help at all. It made no difference.
What seems to be happening more specifically now is this.
When I plug USB Flash Drives behind a USB HUB, only ONE Flash Drive gets detected, the rest do not. And by that I cannot even mount them as they are not listed in storage, only USB 1. Now USB 1 does not ever take a single specific flash drive, it is random. Sometimes when I crank it, it will be one flash drive, other times it will take another flash drive, but always listed as USB 1. Other devices such as my mouse and keyboard behind my USB Hub are working no issues.
What else could be the problem?

Need4Camaro said:
So I tested by powering my USB Hub to an AC Outlet charged by an wall in my garage with an extension cable and made sure the USB Hub lit up before I turned my car / stereo on so I verified it was receiving power but unfortunately this did not help at all. It made no difference.
What seems to be happening more specifically now is this.
When I plug USB Flash Drives behind a USB HUB, only ONE Flash Drive gets detected, the rest do not. And by that I cannot even mount them as they are not listed in storage, only USB 1. Now USB 1 does not ever take a single specific flash drive, it is random. Sometimes when I crank it, it will be one flash drive, other times it will take another flash drive, but always listed as USB 1. Other devices such as my mouse and keyboard behind my USB Hub are working no issues.
What else could be the problem?
Click to expand...
Click to collapse
Well that's not a driver issue at all. That's an issue with the way Android (read: chinese butchered Android) picks and mounts a USB disk. They are actually *ALL* working, from a driver point of view.

doitright said:
Well that's not a driver issue at all. That's an issue with the way Android (read: chinese butchered Android) picks and mounts a USB disk. They are actually *ALL* working, from a driver point of view.
Click to expand...
Click to collapse
I see. So it's not mounting properly. Is there anything I can do about this? I would like to be able to use more than 1 USB storage device at a time.

Need4Camaro said:
I see. So it's not mounting properly. Is there anything I can do about this? I would like to be able to use more than 1 USB storage device at a time.
Click to expand...
Click to collapse
Mount them manually from the commandline.

doitright said:
Mount them manually from the commandline.
Click to expand...
Click to collapse
Will that require root? Also what is the command to mount them?

Need4Camaro said:
Will that require root? Also what is the command to mount them?
Click to expand...
Click to collapse
Root yes.
Command to mount.... "mount".

SM-T510 Tab A 2019 10.1 Otg with charge and data?

Hello guys,
Does anyone knows if there is a otg cable/hub that can power the tablet and be able to use data like usb connected at the same time?
Thanks

The 2019 tablet does not need this, since the port is USB type C albeit USB 2.0; I have connected mine to a hub and have pass-through charging and data. OTG is not really a thing any more since USB type C came about.

Prostheta said:
The 2019 tablet does not need this, since the port is USB type C albeit USB 2.0; I have connected mine to a hub and have pass-through charging and data. OTG is not really a thing any more since USB type C came about.
Click to expand...
Click to collapse
Can you share the type of hub you have been used?
Is the charging speed fine?

Kingston Nucleum. This tablet is in my car and the hub receives power from a 12-14v converter providing USB C PD and USB 3.0 fast charge. Ultimately, the hub defaults charging voltage to that of the lowest device connected. In my case a Sandisk SSD and a Meizu HiFi DAC Pro. This generally means that charging is slow, however it depends on your configuration. I'd say that the charging speed is fine, however it only charges when the car is running or in accessory mode and the tablet is always on in that state. As such the excess power it uses to charge whilst running is only a little more than it uses. It might charge faster if I power the hub from the USB C PD port, however I don't know if this is just pure amps or whether it negotiates higher charging voltages. I don't know if the Nucleum hub allows negotiation of higher charging voltages.

Prostheta said:
Kingston Nucleum. This tablet is in my car and the hub receives power from a 12-14v converter providing USB C PD and USB 3.0 fast charge. Ultimately, the hub defaults charging voltage to that of the lowest device connected. In my case a Sandisk SSD and a Meizu HiFi DAC Pro. This generally means that charging is slow, however it depends on your configuration. I'd say that the charging speed is fine, however it only charges when the car is running or in accessory mode and the tablet is always on in that state. As such the excess power it uses to charge whilst running is only a little more than it uses. It might charge faster if I power the hub from the USB C PD port, however I don't know if this is just pure amps or whether it negotiates higher charging voltages. I don't know if the Nucleum hub allows negotiation of higher charging voltages.
Click to expand...
Click to collapse
Nice, i'm using for the same purpose.
In my dash car
I'm also using MacroDroid for automation.
My issue right now is how should i leave the tablet when i turn ignition off.
I Think i will just shut it down, but i don't like to wait 30 seconds to but again when i turn it on.
What do you do in your case?

I'll have to check out MacroDroid. I'm currently set up with AutoMate, however there's a few annoyances which I think need ironing out. Vanilla Android Auto might not be the most exciting, but it's certainly the most friendly for driving safety.
I leave my tablet as-is. AutoMate automatically wakes the tablet into car mode on USB power and goes to sleep when it loses that. My car (Chrysler 300C) has accessory power for 30s (I think I can increase this in the EVIC) after the ignition is turned off which keeps the charger energised, and by extension the tablet. I'm not too bothered about having to boot up the tablet if it does discharge its battery to shutdown. I think it's maybe a week or so for it to do that, likely less when the tablet ages. As long as it charges and runs on the supply happily I think we're good. In that instance, I might have to see whether an auxiliary power bank would be a workable option. Not at this stage though. Bear in mind that most modern car head units still take about the same amount of time to boot as an Android tablet anyway.
I'm having minor USB issues myself, however this is down to the cable I need not being available. A lot of USB C "charging" cables are only pinned for power and not data. This might be part of any USB C issues you might be having. I myself need a USB C male with a tight 90° or 180° turn, out to a USB C female for the hub's pigtail. I might have to make the choice to fabricobble myself a USB cable just for this purpose....
This is a photo of the install, prior to me wrapping it in 3M brushed black steel vinyl.

I'm updating all of my comments in various threads on this. My setup with the Kingston Nucleum hubis having minor issues. The tablet still needs to be powered up before I turn on the car or at least supply power to the hub. It seems that if this is done the other way around, that is, to power on the car accessories (and hence the hub) then it seems to end up staying as the "device in charge" of the USB network. The tablet charges (slowly) but doesn't mount the USB SSD drive or the USB DAC. If the tablet is powering the hub (in charge, so to speak) then applying power to the hub via the car accessory supply has it working as expected. This does mean that the tablet ends up with a power drain when the car/USB power supply is powered down which isn't ideal. I've gotten into the habit of turning the tablet off when I park for long periods of time, however I need to boot it up to "take charge" of the USB hub network before I can start the car. It's a bit of a bummer.
I'm unsure whether this is a tablet hardware/software issue, the hub or whatever. Going into Android settings and trying to alter the default USB behaviour returns the message that it "cannot switch roles" or something along those lines. I'm beginning to think that this might be the USB hub refusing to switch/relinquish power supply roles once it has external power and hence not allowing the tablet to mount drives or see connected USB devices. It's weird behaviour, because you'd imagine that if the hub were connected to a laptop this would be a common action.

If it helps, I've read that OTG function is not included by Samsung for their device's USB ports. I've been trying to connect some together to perform file transfers with no success. However, I have been able to transfer and charge simultaneously between my SM-T510 tablet and PCs with the USB configuration set to file transfer.

Prostheta said:
The 2019 tablet does not need this, since the port is USB type C albeit USB 2.0; I have connected mine to a hub and have pass-through charging and data. OTG is not really a thing any more since USB type C came about.
Click to expand...
Click to collapse
How to transfare Battery power from Tab to another Android device?