CPU/Mobo Using Windows Tablet without battery and screen, like SBC or CPU... Help

Skyh3ck

Adept
Hello I had this Unbranded UB15MS10 Windows tablet for long time, purchased from one member here., it worked for few months and later screen broke.

The good thing is only the screen is gone, but when i connect the Tablet with HDMI monitor or TV, it is working fine.

Now i want to use this tablet or its motherboard just like SBC or standalone CPU. Specification of the tablet is as follows


Intel Atom Z 3000 category processor, 2 GB RAM, 32 Storage, Wifi and Bluetooth, 1 Micro HDMI, 1 Micro USB to charge and connect device

It has everything inbuilt to run as a low end or media center or experiement pc..

now, my problem is that i can not use the Charger and usb OTG at the same time, so if i want to use it as a cpu, it should get power from somwehre else other than micro usb.
i am thinking to remove the battery and make something that can power the device from battery connnector on motherboard and use the micro usb to connect usb hub.

here is the pic of motherboard. the battery has 3 cable, Red, Black and White. and the battery states it has 3.7 volt charge, i have never done this before just wanted to know guidance and help here. it s DIY project to make a useful pc out of broken tablet.

please check the images, if my problem is solved, then i will get a box prepared for this.

1. can i just cut open any micro usb cable and connect the cable on the battery connector on motherboard, do i need kind of cirtuit or battery regulator in between
2. is there any way i can expand the current single micro usb to few more by addition or soldering any more card or expansion

please suggest
 

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rsaeon

Disciple
I'm working on something similar with an iBall Slide i701, it's a Z3735 based tablet with the same limitations as yours. I did try with a powered OTG hub, but this method only works with certain revisions of these tablets, and it has not worked for me.

I'm experimenting with powering it with a mini DC-DC buck converter through the battery connection:


I have set to output 4.2v and the tablet does boot into the bios and windows start up repair.

The eMMC appears to be corrupted so most likely I'll have to have it boot off a USB storage device, so this project has been put on hold for a while.
 

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Skyh3ck

Adept
Thanks i am not alone... It's so frustrating ti know that this devices being smart and advanced.. but after breaking if one single thing they just stop working or become useless...

Companies ate designing things so weirdly
Strangely my tablet also always goes in repair mode when I soft restart it.. strange but it's not due to emmc storage fault.. it's something to battery and charging
 

Skyh3ck

Adept
I'm working on something similar with an iBall Slide i701, it's a Z3735 based tablet with the same limitations as yours. I did try with a powered OTG hub, but this method only works with certain revisions of these tablets, and it has not worked for me.

I'm experimenting with powering it with a mini DC-DC buck converter through the battery connection:


I have set to output 4.2v and the tablet does boot into the bios and windows start up repair.

The eMMC appears to be corrupted so most likely I'll have to have it boot off a USB storage device, so this project has been put on hold for a while.

Did you removed battery completely.. and how is that converter working.. also is there any custom 3D printed chassis option..

Also how you can extend the usb ports
 

rsaeon

Disciple
Did you removed battery completely.. and how is that converter working.. also is there any custom 3D printed chassis option..

Yes I removed the battery completely, in my case the battery started expanding which led to the eventual cracking of the screen since I left it plugged in all the time with fliqlo as a clock:

170527-193508.jpg


I did purchase a replacement battery, but I couldn't get it it charge properly because the third wire is a thermistor that isn't the standard 10k ohms for most three wire batteries.

The little dc-dc converter board converts a higher voltage to a lower preset voltage. I'm using a 12V/1A power adapter and I used a basic multimer to adjust the trimmer to 4.2v.

As for chassis, I haven't decided yet, but I do like the enclosures sold by probots.co.in for these kind of projects. 3D printing is cool, but a ready made enclosure or even laser cut acrylic from a sign maker shop is far more accessible.

Also how you can extend the usb ports

I'm using an old powered usb hub

Won't something like this work? It works for a Firestick and allows connecting external 2.5" USB powered HDD when using a 5V 2A power adapter. The USB A female port can also be extended via a hub.

The seller responds in the questions section that it won't work for Android tablets, just the firestick. I really wanted to try it out, but I have a couple of those and it's a hit or a miss if it works with a tablet.
 
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