32 replies to this topic

[ilmenator]

Back from business trip and the protoboard has arrived
 MIDIbox SCE board.JPG   324.01K   118 downloads
I hope to find the time to solder it over the weekend. Laen's PCB service was excellent as always - thanks!

[TK.]

Wow, great work!

Best Regards, Thorsten.

[schmidtc]

Nice one! I've always wanted to check out the Wavestation, especially now. BTW what kind of buttons are those? They look like the same type the oberheim xpander uses.

[ilmenator]

The board is not soldered yet - no time...

The buttons are recycled from a video editor - they are absolutely great. I forgot who manufactures them, but I think they are still available new. Unfortunately, their footprint is not compatible with the ones commonly used in MBSEQ and the Sammiches.

[ilmenator]

BTW what kind of buttons are those? They look like the same type the oberheim xpander uses.

Just to follow up: these are Marquardt switches, model 6425 - you can find them for example at Distrelec, and they can be had with or without LED. You can also get a version that is double the width, which makes for a nice ENTER button. The datasheet is here.

[ilmenator]

I got some questions about the status of this project, so here is a little update: there is some weird problem preventing the new protoboard from working properly. I am not sure what the problem is here, so I'll have to get out the logic analyzer to look into the signals on the address and data buses. I had to move my stuff around in the house, so my "lab" is not fully functional right now. I am still at it, and it will be solved, I just need some time to look into it properly.

Best, ilmenator

[bazrush]

Don't forget about this one: it looks like a great thing. My wavestation is purring at the thought of new PCM data! ;-)

[ilmenator]

I know it sounds lame, but my logic analyzer - another DIY project - broke down. Now I have two issues to solve. It's not forgotten!

[jhulk]

I know it sounds lame, but my logic analyzer - another DIY project - broke down. Now I have two issues to solve. It's not forgotten!

i create korg format pcm files in a dsm1 sampler and then load them into my t1 and t3ex samplers

there is a limit of 100 samples and 1mb of 8bit memory which gives you 512k of 16bit sample memory

with the limit of 100 samples if you use the multisound format of standard korg multisamples they are in multipuls of 8 so you can get roughly 12 multisounds

this will give you the full range of the keyboard

but i have found that just using 4 multisound c4 c5 c6 c7 work fine so you can get 26 multi sounds on one pcm disk

now the difference with the sr is that it has a 2mb 16bit storage internal ram so that the card adapter is a pcmcia 16bit format card

the pcm data is the same format just that it can read more waveforms

they stick to the 32khz which allows them 1 octave pitch above root key

so whether you could do a dual card format

it should be easier for the pcmcia 16bit card adapter as its still in production and in use still as the card bus system uses it

i was toying with the same structure but with a fpga design with sdram cards and a switching circuit but could not fathom the card format

you having a sadok sam1 would make it easier

and hearing your own pcm samples with the synths engine is amasing as it sound sweet

but being able to do it in an m1 or wavestation is great as they dont have a pcm internal support like the t1 series did nore does the o1w which to me they went backwards as they did it in there t1 series and should of kept it and expanded it as they were going it was not until the trinity did they bring it back

[ilmenator]

I know it sounds lame, but my logic analyzer - another DIY project - broke down. Now I have two issues to solve. It's not forgotten!

Just a quick update as already mentioned over at Vimeo: I got another logic analyzer and the RAM card section is up and running again. There is still some problem in the PCM card section that I have to work on.

[jhulk]

if you have the sam1 it reads dsm1 multisounds like the t1 does i could do you floppy images with omniflop and you could load them in with the sam1 and transfer to your new machine

Edited by jhulk, 17 March 2012 - 23:21.

[vargus]

This looks like an awesome project. I have the SAM-1, but its a PITA to use. This looks excellent. I'd be first in line if it was for sale. How's the project going?

[ilmenator]

It's still on my list of things to do - I have been asked by a lot of people about this project, and it will be finished eventually. There is still a bug somewhere that prevents the PCM data card simulation from being properly acknowledged by the WS.

You see from my profile that I am located in the north of Europe, and here summer is usually the time to enjoy the sun - in winter there is very little sun available, so one has to enjoy while it's there. It also means that - come winter - I will return to the SCE project. Just hold on a little longer .