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Circuitbenders Forum => Circuitbending discussion => Topic started by: oscillate_wildly on August 03, 2008, 11:40:52 PM

Title: Casio Sk-1 gate output and CV input
Post by: oscillate_wildly on August 03, 2008, 11:40:52 PM

Does anyone know it a gate output or CV input exist on the casio Sk-1, if so where to find them? thanks x

Title: Re: Casio Sk-1 gate output and CV input
Post by: gmeredith on August 04, 2008, 07:25:31 AM

It doesn't have a CV input in the traditional sense of an analog synth control - it does however use a CV signal to create the ADSR shape of each preset - but not the pitch of the note, as in a traditional CV signal.

If you want to control the SK note pitch externally, I highly recommend you go with a MIDI in kit, by Highly Liquid:

http://highlyliquid.com/kits/skm/

It works really well, much better than any CV/gate setup could ever do, if it were possible to do on the SK (which it isn't)

Regarding a gate output, you could use the envelope CV line and select the default preset envelope, which would be most similar to a gate output shape, with a fast attack and decay. The CV line outputs a +2.5V DC maximim signal.

Cheers, Graham

Title: Re: Casio Sk-1 gate output and CV input
Post by: oscillate_wildly on August 04, 2008, 04:44:55 PM

Ok sure do you know where about the preset envelope is on the board, form the service manual? thanks x

Title: Re: Casio Sk-1 gate output and CV input
Post by: gmeredith on August 06, 2008, 05:04:23 AM

On the SK1 board, the points were mentioned here:

http://www.circuitbenders.co.uk/forum/index.php/topic,704.0.html

Hope that helps, I don't have an SK-1 myself to show you exactly.

Cheers, graham