Hey all,
I have some 30 pins on an ARM based GPS board, but I don't have the pinout for it.
I think there are USB Host D+ and D- pins (couldn't find a 5V line). How can I test for these pins, using a multimeter or otherwise?
Thanks for the help!
Is it correct to first assume that no voltage will be on these pins since no device is connected? Or is there still voltage regardless? If so, what amount?
I assume this is a breakout board of some sort?
If so you could just google the pinout schematics for the processor and follow the traces to the pins you're seeing. Without a scope I can't see any way to find those pins short of trial and error.
Yes, it is a Chinese car unit with GPS and Samsung S3C2440A-40 processor. So you suggest tracing the pins of this CPU? If not, trail and error would involve tapping two side-by-side 0v pins and just go down the line?
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I accidently renamed the "SDMMC" device to "Storage Device" in the registry and now am stuck in the factory NAV software, which just lets you choose the executable to run from the SD card. Of course now though, it can't find the device since it's looking for "SDMMC." So I figured, tap into a USB host port, hook up a keyboard, and exit the factory NAV software to fix the registry. Unfortunatly, autorun seems to be disabled on the SD card drive and hard reset doesn't affect it.
I'll hopefully be picking up a powered hub tomorrow and doing some trial and error soldering this weekend.. any other ideas in the mean time?
Related
This might sound like a much more technical question.
Im trying to find a pinout for the Type-C to Type-A cable. Im actually looking to make a multi-cable for use with my RavPower battery pack. I still have a lot of MicroUSB devices, so I want as few cables as possible to carry around with me. I know I can buy cables like this, but I have a few reasons to build my own. Including integration into my car.
Anyone know where a pinout diagram for a cable would be. I have the pinouts for the individual connectors, but not the connections between the two.
chevycam94 said:
This might sound like a much more technical question.
Im trying to find a pinout for the Type-C to Type-A cable. Im actually looking to make a multi-cable for use with my RavPower battery pack. I still have a lot of MicroUSB devices, so I want as few cables as possible to carry around with me. I know I can buy cables like this, but I have a few reasons to build my own. Including integration into my car.
Anyone know where a pinout diagram for a cable would be. I have the pinouts for the individual connectors, but not the connections between the two.
Click to expand...
Click to collapse
http://www.usb.org/developers/docs/
Download the zipped document file from there. USB Type-C Specification Release 1.1.pdf contains the information you need, I think.
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Hope that helps.
Hi, good afternoon
As the tittle says:
phone used to work perfectly, and not except this issue, still works.
so
i plug any charger, the screen says : SLOW CHARGING (takes hours) tried all kind og chargers, from the alcatel of 5v 2 A, to others of 5v 1,5 A 5v 500 Ma
i plug in the pc, the pc doesn't detect the phone. is not a cable problem, got other phones and work with same cable.
i already tried all the methods from page 1.2 and 3 from google, cables/chargers/drivers. blah blah
also, i have replaced the battery and also, replaced the USB low board because i thought it was a physical problem.
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After all this changes i'm still the same.
plug any charger, the screen says : SLOW CHARGING (takes hours)
plug in the pc, the pc doesn't detect the phone.
anyone have experienced the same problems or have some clue what could be?
is posible the main board is broken?, anyone have idea about the path of the usb, inside the phone?, maybe i need to replace the flex cable?
anything.. pls help
Thanks
same problem
Hello. I have exactly the same problem for a few days. I tried different cables and chargers. I tried to reset the phone. the problem is still here. I thought the problem came from the battery but now that I see your post I think it could be a software bug ... or can be a planned obsolescence :-/
if you find a solution I'm waiting ...
I have P3113 - Tab 7.0 Wifi/IR blaster. The cable that came with it (ebay) does not seem to support USB data connections. charges just fine. I bought another wire online (this was years ago) to no avail, still no data connection.
In comparing to the image here: https://pinoutguide.com/visual/gen/samsung_galaxy_tab.jpg (with pins being numbered 1 on the right and 30 on the left, I have pins:
3USB_DP_CON I/OUSB Data +4USB_DM_CON I/OUSB Data -
7V_BUS_1 P 8V_BUS_1 P
15Gnd P 16Gnd P
30Gnd P
Which seems like it should (?) work for data transfer with a computer. (make a lot more sense than the inverse)
I've looked around and have seen a lot of pintouts to modify things to support audio or whatever else, but does anyone know if the pinout I have is valid for USB data transfer? Is there something I can do to get the data connection working? Or do need to play some roulette with cable buying? (Any recommendations?)
I've popped the casing off the plug and it seems like wiring there should be mapped correctly, though it does look like it's cheap for sure, but there's no resistors or anything, wasn't sure if there needs to be for "standard" data usage.
Any thoughts would be great. I'm not looking to do much more as to hardware hacking right now, just getting it rooted and then more or less a simple controller.
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Need help identifying positive and negative pins on a zebra tc 72 . Reyes with multimeter do find positive and negative terminals with no luck. Can anybody help me how to make a diy charger
Hi, on Pin1 you have GND, on Pin 3 +5.4V.
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thank you any chance you know how to install a sim card slot in it? or unlock the bootloader
On TC72 not possible to install SIM card. TC77 has this funcionality. For second question, I can't share this info.
autoid_OS said:
Hi, on Pin1 you have GND, on Pin 3 +5.4V.
View attachment 5403717
Click to expand...
Click to collapse
Hey autoid_os
I have the TC77 with identical Port. I want to make a USB cable for ADB/Fastboot Connection.
To you know what the Data pin's are in your Picture?
For this new Port I don't find any technical information.
Thanks in advance
Blizzrar
But I think better is to buy cable for few usd
autoid_OS said:
But I think better is to buy cable for few usd
Click to expand...
Click to collapse
Yes, this is what I did for the USB cable.
I have another question, do you know how the serial cable works for the TC7x series?
I mean the part number CBL-TC7X-SERL1-01
It seems to connect to the same connector but the serial connector seems to be very big so I guess it is using some circuit like USB to serial for computer? I cannot find it anywhere to buy it that's why I am asking.
Can some one make me a charge cable and send to me.
I do not want to pay $100.0 of $30.0 for the cable the tc70.
Could someone please give a old geezer a hand fixin this thing. Its been a few years since I've mucked around with it and not sure what new stuff all the cool kids are rockin these days. I do have a usb thats hooks to the back I do hear the windows sound but gives some sort of error in device manager & nothing I've tried will connect to it. Weird thing is this is the screen when android is supposed to boot
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Can I try using a stm32 programmer to the test pins on the main board ? If so which pins I have gnd M_RST SWCLK SWDIO & 3.3V on the main board and the programmer has 3.3v rx rst IO0 en IO2 tx gnd
Cheers
Is MCU isn't android.
Refer my threads https://forum.xda-developers.com/an...px3-5-headunit-mod-recover-flash-som-t3766892
marchnz said:
Is MCU isn't android.
Refer my threads https://forum.xda-developers.com/an...px3-5-headunit-mod-recover-flash-som-t3766892
Click to expand...
Click to collapse
Thanks buds but the link to the driver is stale & not sure what its called do you have a name or a good link ? Oh and do you know where the maskrom short would be ?
TY
Also does anyone know where these pins go to on the board ? The traces are gone & shining a high powered light thru the board doesnt show anything that they were connected to..