According to the writeup – its formatted fat16…

Posted at 8:35 am on Jul 31st, 2008 by Frollard

What would be really cool is this. Instead of storing the data on the card and making it play back, it would be way fun to make it so you could send it data in real time and carry on conversations with people through the wacky elvis head. Just think of all the little kids you could scar for life by scaring them with that thing!

Posted at 10:19 am on Jul 31st, 2008 by mike

I’m seeing visions of Halloween, screaming kids, and Elvis rising from the dead.

Posted at 10:56 am on Jul 31st, 2008 by cberkop

Mike, I am working on this. I am building a ‘bed of nails’ for the CPU right now. It uses a sunplus CPU which isn’t very well documented. So, lots of reverse engineering is involved. Real-time control is my overall goal, even if it means building a replacement CPU board (which once everything is mapped shouldn’t be too difficult.) I can’t find any documentation for the MP3 codec chip, either.

Posted at 11:25 am on Jul 31st, 2008 by Scott McDonnell

scott this is awesome.
Please keep us updated because if you didn’t read previously this is awesome.

Posted at 1:17 pm on Jul 31st, 2008 by strider_mt2k

We need this badly. Would be great to integrate a wireless connect. Remote Elvis would be the must have..

Posted at 2:34 pm on Jul 31st, 2008 by Hamsterfunk

frollard, that is correct. it is formatted fat16. fat32 will not work.

Posted at 4:02 pm on Jul 31st, 2008 by Scott McDonnell

thanks, strider. this should make for some awesome halloween displays. what i am really going to need help with is a decent animation program like VSA (visual show automation) to let you synch the scripts with the audio.

Posted at 4:04 pm on Jul 31st, 2008 by Scott McDonnell

Crazy thought, but isn’t it possible to create some interface that emulates an XD card? Then you could (maybe, theoretically) just ’stream’ the next bit of mp3 file as the elvishead reads the previous, and so still control it realtime. Sort of.

Posted at 4:06 pm on Jul 31st, 2008 by graey

graey,

Technically, it is possible and was discussed briefly on the thread. The only real thing getting in the way is that you also need to emulate FAT. One of the other members there mentioned he would try that.

Personally, I want to see how far the built in hardware can take us, and then I will probably just design a new controller board for it.

Posted at 7:48 pm on Aug 4th, 2008 by Scott McDonnell

Re: emulating the xD card. If one were to go through all that trouble, it would probably be easier to just replace the CPU board entirely. The motor signals are all just digital out on the cpu board and these go to H-Bridge drivers on other boards. The only other thing of interest on the CPU board is the MP3 codec IC, and there are several of those around. In the end, I will probably do this. I am just having some fun trying to learn something about reverse-engineering by seeing how far I can take the original hardware.

Posted at 7:45 am on Aug 5th, 2008 by Scott McDonnell

That Elivis is one sweet bot! He makes my motors run and my dram smoke.

Posted at 9:33 pm on Jan 22nd, 2009 by Robot Betty9