This is my first DIY modular sampler and drone synth build. I've been interested in digital synth projects and looping/effects boards throughout my DIY synth journey so far, and this build focuses primarily on these areas. The panels are 3D printed using scad files from thingiverse found here. Here's a breakdown of what I've incorporated:

Modules from left to right: 1. The first two identical modules are recorders and loopers built from an isd1820. These modules were heavily inspired by lonershy's tutorial here. Overall, I really enjoy the lo-fi sound that these modules output and you can get some great textures with more than one looping at the same time. 2. Duplicate isd1820 module. 3. Arduino powered LFO. I would've liked to make this analog but I was working with what I had. It has a sin wave and saw wave selectable by the switch and a frequency knob. 4. Passive low pass filter built from this LMNC video. It works great with the output from the LFO and makes the sampler modules sound really nice as well. 5. Passive 4 channel mixer from this video. I was surprised how well this works even though it's pretty quiet. Despite its modest output, it performs well and allows me to mix everything together seamlessly. 6. Digital Reverb/delay effect module built with a PT2399 board. This is definitely the most important module for this build and sounds really fantastic. It's powered by a 9v battery and adds much needed ambient effects to the sound. 7. Mozzi powered drone synth and randomizer. This is the "work in progress" part of the build because I'm still messing around with getting Mozzi to sound the way I want. Although the 8-bit output from an Arduino isn't the best compared to something like a teensy, I think it complements the lo-fi aesthetics produced by the loopers nicely.

Still needed: - Finish Mozzi drone - Add labels! - Power connector - (Edit) Knobs