[NTLK] Wacom tablets (was: Okay, that apears to be working, now for the question)

[Davis Remmel]

I actually have some experience with ADB, and I’d love to lend a helping hand. A few years ago I reverse/re-engineered the ADB protocol and implemented it into an ADB–USB translator with an Arduino (sample code here [1]).

Another hacker, Spritesmods, did the same thing with two ATiny ICs [2]. I actually find his solution “better", because his dual-controller solution lends itself better to the protocol’s asynchronicity. However, his method translates ADB to USB on the chip (versus the computer’s CPU), so it’s harder to prototype with.

There are a ton of invaluable resources hidden across the web, but the bible of ADB is Chapter 8 of "Apple Guide to Macintosh Family Hardware” [3]. Smaller resources, such as Technical Note HW01, are easy to find.

If I can lend any assistance, please let me know!

—
Davis

[1]: https://github.com/davisr/Arduino-ADB
[2]: http://spritesmods.com/?art=macsearm&page=4
[3]: http://www.archive.org/stream/apple-guide-macintosh-family-hardware/Apple_Guide_to_the_Macintosh_Family_Hardware_2e#page/n325/mode/2up




On Mar 2, 2014, at 6:32 AM, Mark Crutch <mark.crutch at gmail.com> wrote:

> Simon Stapleton wrote:
> 
> I'm in the process of reverse engineering the protocol used by the ADB
>> Intuos tablets.  It's slightly[1] more complex than that for the Ultrapad /
>> ArtZ tablets that I worked out a while back, but I'm convinced it's
>> do-able. That said, I've been convinced it's do-able for some time - I've
>> been titting about with this, on and off, for a couple of years now...
>> 
> 
> 
> This may be of no help whatsoever, but I recently managed to get my old
> RS232 serial port Intuos working under Linux care of the drivers and info
> at these links:
> 
> http://sourceforge.net/apps/mediawiki/linuxwacom/index.php?title=FAQ
> https://github.com/RoaldFre/wacom_serial5
> http://www.cipht.net/2011/07/02/wacom_serial-initial-release.html
> http://ubuntuforums.org/showthread.php?t=1780154
> 
> 
> Now I know that ADB and RS232 aren't the same thing. Neither is Linux and
> MacOS. But something there might help to give you a starting point in
> understanding the Wacom protocol, assuming it's similar at that level. I
> just hope I'm not sending you on a wild goose chase.
> 
> 
> Mark
> 
> 
> -- 
> Co-creator of *The Greys* and *Monsters, Inked* webcomics
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