Vintage Simmons Drums (UK) Users Group

Anyone know if the four e-prom version of the analog/digital voice card for SDS7 where a genuine Simmons product? Or where they aftermarket add-on from 3.party?

I like the idea of these cards, but it seams we could make them more simple, or add more sounds using bigger e-proms and some simple address altering.

Surprisingly many useful 8-bit samples only need 8kB. That's a whopping 64 sounds on a single 512 e-prom that actually will fit in the standard socket. Or 16 long tom decays or cymbal samples.

--h

I could ask Dave on that one.
I don't know myself, only came across one or two at some point on ebay probably...

but yes there must be something interesting to do on the Eproms.
Not the priority yet on the 7 the though.

We need to securise a new memory, and get rid of the battery first.
I've seen you have some solutions about back panel contacts too.
on the top on usual electronic maintenance.

There's still quite some job to do on the (could be) wonderful sds7...

Speak soon
Patrice.


----- Mail d'origine -----
De: hr.public@... [Simmons_Drums] <Simmons_Drums@yahoogroups.com>
À: Simmons Drums <Simmons_Drums@yahoogroups.com>
Envoyé: Sun, 22 Jan 2017 13:35:31 +0100 (CET)
Objet: [Simmons Drums] Q: SDS7 4 e-prom analog/digital card





 

It was a Simmons Group Centre (Simmons USA) product designed to extend the life of the SDS7. The drag about the 2085 card is that you give up Resonance control as that parameter now controls which eprom you're accessing.

Thanks Ed, very informative.

thanks Ed. :)
I forgot that one...
Must be exhausting for the Powersupply 4 eproms to feed , if 12 modules in the brain. ^^

----- Mail d'origine -----
De: edrose1@... [Simmons_Drums] <Simmons_Drums@yahoogroups.com>
À: Simmons Drums <Simmons_Drums@yahoogroups.com>
Envoyé: Sun, 22 Jan 2017 18:43:51 +0100 (CET)
Objet: [Simmons Drums] Re: Q: SDS7 4 e-prom analog/digital card





 



----- Original Message -----

From: Jacquot.Patrice@... [Simmons_Drums]

To: Simmons Drums

Sent: Sunday, January 22, 2017 9:17 PM

Subject: Re : [Simmons Drums] Re: Q: SDS7 4 e-prom analog/digital card

 

thanks Ed. :)
I forgot that one...
Must be exhausting for the Powersupply 4 eproms to feed , if 12 modules in the brain. ^^

----- Mail d'origine -----
De: edrose1@... [Simmons_Drums] <Simmons_Drums@yahoogroups.com>
À: Simmons Drums <Simmons_Drums@yahoogroups.com>
Envoyé: Sun, 22 Jan 2017 18:43:51 +0100 (CET)
Objet: [Simmons Drums] Re: Q: SDS7 4 e-prom analog/digital card





 

It was a Simmons Group Centre (Simmons USA) product designed to extend the life of the SDS7. The drag about the 2085 card is that you give up Resonance control as that parameter now controls which eprom you're accessing.

Den 2017-01-22 kl. 13:35, skrev hr.public@... [Simmons_Drums]:

> Anyone know if the four e-prom version of the analog/digital voice card
> for SDS7 where a genuine Simmons product? Or where they aftermarket
> add-on from 3.party?
>
> I like the idea of these cards, but it seams we could make them more
> simple, or add more sounds using bigger e-proms and some simple address
> altering.
>
> Surprisingly many useful 8-bit samples only need 8kB. That's a whopping
> 64 sounds on a single 512 e-prom that actually will fit in the standard
> socket. Or 16 long tom decays or cymbal samples.

I don't know either, but I like the idea. On a side note; a friend of
mine has a HEAVILY modified Oberheim DMX with rotare switches on top so
that each channel has eight different sounds to choose from, many of
them copies of Linn and Simmons units. Apparently modified back in the
days so there were many third parties doing mods like that.

On the other hand, who here was it that experimented with external prom
image handling on computer? Was it you? I like that idea too, if it's
managable. (Though I personally tend to tweak the analogue part the most.)

--
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se

---

Angaudlinn on iTunes:
https://itunes.apple.com/us/artist/angaudlinn/id582356650

Angaudlinn's playlist på Spotify:
http://open.spotify.com/user/simplyanalogue/playlist/540Srd3zA15pK7G1S8qLHo

Angaudlinn on facebook:
https://www.facebook.com/Angaudlinn

Den 2017-01-22 kl. 14:32, skrev Jacquot.Patrice@... [Simmons_Drums]:

> We need to securise a new memory, and get rid of the battery first.

Replacing it with something better is easy and a new socket could even
be mounted on the outside. But, as I guess you mean, a flash memory
would be even more reliable.

--
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se

---

Angaudlinn on iTunes:
https://itunes.apple.com/us/artist/angaudlinn/id582356650

Angaudlinn's playlist på Spotify:
http://open.spotify.com/user/simplyanalogue/playlist/540Srd3zA15pK7G1S8qLHo

Angaudlinn on facebook:
https://www.facebook.com/Angaudlinn

I love to pick Thierry’s brain, but never been able to get in contact with him. If anyone knowing him could reach out and hear if he interested to add to the conversation?

 

I believe I dissected enough information to hook up an Arduino developer board to the SDS7 bus. http://snw.lonningdal.no/sds7.php#15CV  Programming shouldn’t be very difficult.

 

What’s holding me back are the edge connector, I don’t want to solder inside my SDS and need to design an edge connector and get it manufactured.

If possible I want to make one that can be used in all position incl. CPU/Memory. Not decided how much active electronic I should design for on the connector, a power supply/protection would make sense. Maybe only have the connector made with mounting holes for a frame to hang any crazy idea on J  But then it also need to be designed not to fall out of the socket.

 

 

BTW: Any contributor should understand I post under open source hardware. In short meaning anyone can take from this project and make their own luck, but they also have to share what they add to the project for other to do the same. I will not be in a position to order, build or otherwise function as a distributor of parts or finished products. If I finish any software or a PCB design I’ll post files and anyone can order from their favorite PCB manufacturer. I very much like the idea of sites like https://oshpark.com

Here's the link to the video of a Moates Ostrich replacing the eprom. 

That was the video I remembered! :)
--
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se

---

Angaudlinn on iTunes:
https://itunes.apple.com/us/artist/angaudlinn/id582356650

Angaudlinn's playlist på Spotify:
http://open.spotify.com/user/simplyanalogue/playlist/540Srd3zA15pK7G1S8qLHo

Angaudlinn on facebook:
https://www.facebook.com/Angaudlinn



Den 2017-01-23 kl. 15:54, skrev edrose1@... [Simmons_Drums]:

>
>
> Here's the link to the video of a Moates Ostrich replacing the eprom.
>
> iCloud Photo Sharing <https://www.icloud.com/sharedalbum/#B0g5NI45Miw0j7>

cool... :)
I know another french one who talked to me about it for a while. but he has no time for this ...
so it might just never happen ^^


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De: 'Michael Buchner' buchnerelectronics@... [Simmons_Drums] <Simmons_Drums@yahoogroups.com>
À: Simmons Drums <Simmons_Drums@yahoogroups.com>
Envoyé: Mon, 23 Jan 2017 09:14:52 +0100 (CET)
Objet: Re: [Simmons Drums] Re: Q: SDS7 4 e-prom analog/digital card





 

I love that video !!
thanks Ed :)

----- Mail d'origine -----
De: edrose1@... [Simmons_Drums] <Simmons_Drums@yahoogroups.com>
À: Simmons Drums <Simmons_Drums@yahoogroups.com>
Envoyé: Mon, 23 Jan 2017 15:54:56 +0100 (CET)
Objet: Re: [Simmons Drums] Q: SDS7 4 e-prom analog/digital card





 

ha ha :)  I was sure you'd notice that one Alfonso . ;)


----- Mail d'origine -----
De: ALFONSO PACHES alfpaches@... [Simmons_Drums] <Simmons_Drums@yahoogroups.com>
À: Simmons Drums <Simmons_Drums@yahoogroups.com>
Envoyé: Mon, 23 Jan 2017 16:01:59 +0100 (CET)
Objet: Re: [Simmons Drums] Q: SDS7 4 e-prom analog/digital card





 

I just had a eureka moment.

 

Preparing notes for the EPROM project I had a look at the schematics and then it hit me.

Practical problem with EPROM emulation are the 2-byte wide parallel interface needed.

What if we skip that side of the memory control and let the clock on the voice card simply control a modern serial EEPROM, or better - a (micro)SD memory card?

 

Write up and notes on its way, updated frequently so for those interested please refresh. And as always, corrections and direction are welcome.

http://snw.lonningdal.no/sds7eprom.php#sd

 

--hans