After the hours I've spent trying to find the error I really assume to "disable" the digital part, add CV and gate input sockets and connect it directly with my Doepfer Dark Time.
i had an idea with adding a meeblip this what they told me
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My question to one of the guys
can another filter be connect to a Meeblip like anther vcf filter
as i have korg ms 20 vcf clone i am making ..
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Reply
Yes, it's possible to drive an analog filter from Meeblip. There are two 8-bit outputs on the DAC chip - they're currently both used to generate the audio waveform. It's possible to use just one output to generate an 8-bit waveform. That leave the other output to provide 0-5V cv to control filter cutoff on an analog filter.
It works even better with a higher resolution DAC. Or so a little bird tells me
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any idea if this would work for the freebass