[sdiy] cs30 trigger input

[gregory zifcak]

yes, i know. i suppose i wasn't clear: what i am trying to do is internally 
convert the trigger that is extracted from the audio input into one that is 
capable of clocking the sequencer. this is a hardware modification.


>From: Scott Juskiw <scott at tellun.com>
>To: gregory zifcak <zifcak at hotmail.com>, synth-diy at dropmix.xs4all.nl
>Subject: Re: [sdiy] cs30 trigger input
>Date: Fri, 14 Oct 2005 18:29:06 -0600
>
>I don't think this is possible. The sequencer in the CS30 cannot be clocked 
>from any of the jacks on the back, unless you do some hardware hacking on 
>the inside. The EXTERNAL input jack is expecting an audio signal, not a 
>gate signal, which it processes to generate a trigger to fire the EGs, but 
>not the sequencer.
>
>>i am in the process of trying to trigger a yamaha cs30 sequencer from the 
>>external input. it looks like the sequencer needs +15v pulses to step, and 
>>the external input is converted to a trigger that my cheap meter is 
>>reading as negative-going from +10v to +4v. this seems weird to me. i had 
>>heard that the yamaha triggers were 0 to -15 or some such thing. anyone 
>>know what i should be getting? supposing my reading is correct, how would 
>>i go about converting this to +15? i've converted s-trig to v-trig, it 
>>must be similar. any ideas?
>>