Available as an assembled Module and as a DIY project.
This Module is currently available.
Lo-fi delay & filter
Lunar Delay is a combination delay and multimode filter. It is inspired by the Korg Monotron Delay, and uses the classic PT2399 chip as the core of the delay. The filter is smooth and offers one pole and two pole response for low pass, band pass, and high pass each, as well as two notch filters. But with the resonance cranked, this thing can really scream. Deep space echoes, overdrive distortion, and harsh noise feedback loops - Lunar Delay does it all.
Available as a built module or DIY kit.
Read an in depth exploration of the circuitry on the design blog.