[Android Q&A, Help & Troubleshooting] Nsowon:
Hi, (Edited with merged post below and new information.)

I have an Onda Vi140 10" tablet and the capacitive touchscreen is useless for real writing apps.

Is there any way to add a graphics tablet like Wacom to Android via USB?

I know they work in Linux, but I wouldn't have a clue how to port a driver to Android.

Is there a technical (battery drain?) reason why this isn't feasible?

I've searched the web and trawled through countless pages, so whether I'm searching wrong, or it's an option only a few people would want and therefore of no interest, I'm not sure.

There are a few questions dotted around the web, but no answers.

For me, I'm about to buy an A5 tablet for Photoshop, so slipping it into my android sleeve and using it in meetings would be a bonus.

If it's just drivers, maybe someone would know how to try? I just need the basic writing ability. All other features wouldn't be needed, or supported by apps.

Any advice would be appreciated.

David.

Sorry if this is in the wrong thread, but although not specific to my device, the earlier thread mentions a specific area of Android I'm interested in. If it's in the wrong place, please post it here - where I've so far had no luck. I don't want to double-post. Here, user d10221 seems to know what he's doing.

From this earlier post in this thread by user d10221 it seems that an external USB HID compliant graphics tablet might work.

1) I have a cheap graphics tablet which appears to be HID compliant and works as a mouse in Windows & without drivers.

2) My HID compliant mouse works perfectly on my ICS tablet.

Does anyone know why, if it's HID compliant, the pen/tablet is recognised in WIn7, but not in Android; but a similarly compliant mouse does?

I just need the mouse functions.

My /proc/bus/input shows:

I: Bus=0019 Vendor=0001 Product=0001 Version=0100

N: Name="sun4i-keyboard"

P: Phys=sun4ikbd/input0

S: Sysfs=/devices/virtual/input/input0

U: Uniq=

H: Handlers=kbd event0

B: PROP=0

B: EV=3

B: KEY=2000000 0 800 c0040 0 0 10000002

I: Bus=0019 Vendor=0001 Product=0001 Version=0100

N: Name="axp20-supplyer"

P: Phys=m1kbd/input2

S: Sysfs=/devices/platform/sun4i-i2c.0/i2c-0/0-0034/axp20-supplyer.28/input/input1

U: Uniq=

H: Handlers=kbd event1

B: PROP=0

B: EV=7

B: KEY=100000 0 0 0

B: REL=0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000

N: Name="ft5x_ts"

P: Phys=

S: Sysfs=/devices/virtual/input/input2

U: Uniq=

H: Handlers=event2

B: PROP=0

B: EV=b

B: KEY=400 0 0 0 0 0 0 0 0 0 0

B: ABS=2650000 0

I: Bus=0018 Vendor=0000 Product=0000 Version=0000

N: Name="mma7660"

P: Phys=

S: Sysfs=/devices/virtual/input/input3

U: Uniq=

H: Handlers=js0 event3

B: PROP=0

B: EV=9

B: ABS=7

Which, as far as I can tell, are all standard devices from the tablet. So, I'm guessing ICS isn't picking the HID drawing tablet up in the same way as windows.

Anyone any ideas? Can I force Android to look and set it up this way? I dabble a bit in Ubuntu and have already modified my Onda Vi40 tablet to read/write to my external TF and USB sticks. However, I'm lost - although I think it may be possible.

Thanks for any help in advance.

David.

Update edit:

Using this USB scanning App I got this:

Device List 1-1

Device Info

Device Path: /sys/bus/usb/devices/1-1/

Device Class: Use class information in the Interface Descriptors (0x0)

Vendor ID: 0b57

Vendor Name (reported): Han Wang Technoloy Center

Vendor Name (from DB): Beijing HanwangTechnology Co., Ltd

Product ID: 8004

Product Name (reported): JB8 USB Tablet

Product Name (from DB): not in db

Additional Info

USB Version: 1.00

Speed: 1.5

Protocol: 00

Maximum Power: 40mA

Serial Number:

The Android scan option found nothing: This is from the Linux Kernel scan.

So, it seems the Linux Kernel finds something, but not Android.

Am I any closer?

David. Edit: (Thanks mods for merging these posts.)