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Cgs sequencer/ programmer

Cgs sequencer/ programmer

2016-03-08 by Valdemar Kristensen

Hi,
Today I finished a 4 step Cgs sequencer/ programmer. It is working fine except for one thing: with a clock sent to "up" the sequencer gets stuck everytime it reaches step one. If I plug a cable from the pulse out of step one To the pulse in of step two I get a step sequencer of three steps, starting at step two.

Any clues on where to look? I'd expect this to happen with no connection between point "g" and "h" or "h" and "j" between the A boards of the two first steps. Those connections seem fine, though.

Any help is appreciated.
Thanks.

Best,
Valdemar

Re: Cgs sequencer/ programmer

2016-03-08 by Ken Stone

Also check the PNP transistors associated with the 470pF capacitor on the preceeding stage.
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On Wed, Mar 9, 2016 at 6:09 AM, Valdemar Kristensen valdemar.kristensen@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

Hi,

Today I finished a 4 step Cgs sequencer/ programmer. It is working fine except for one thing: with a clock sent to "up" the sequencer gets stuck everytime it reaches step one. If I plug a cable from the pulse out of step one To the pulse in of step two I get a step sequencer of three steps, starting at step two.

Any clues on where to look? I'd expect this to happen with no connection between point "g" and "h" or "h" and "j" between the A boards of the two first steps. Those connections seem fine, though.

Any help is appreciated.
Thanks.

Best,
Valdemar




--
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

Re: Cgs sequencer/ programmer

2016-03-09 by valdemarkristensen

Thanks, Ken. I went through it all and didn't find anything suspicious. I plugged it back in to the modular, to test with an oscilloscope, but now it works :D strange.

Best, Valdemar

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