BBD chip based analog Flanger and Delay Module with LFO and CV.
https://www.ericasynths.lv/diy-bbd-delay-flanger-full-kit-358/
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The module has built in LFO with selectable shape and dedicated LFO output, delay time CV input with an attenuator, selectable feedback overdrive and feedback Send-Return connectors, so you can apply external effects on feedback signal. Maximums feedback settings put the module in self oscillation, so it can be used as an experimental sound source, as well.

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