Building and playing the LMN-3 DIY open source synthesiser
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 Published On Aug 28, 2022

The #LMN3 #raspberrypi #synthesizer made quite the splash in the media some weeks ago. In this video (sponsored by https://www.pcbway.com, a service for PCBs, 3D printing, CNC and more), I build it and explore the DAW a bit. Is this really an "OP-1 - killer" that some on social media make it out to be? Index:

00:00 sponsored by @PCBWay
00:12 introduction
00:57 getting the PCB and the enclosure
04:04 other hardware needed (and current prices)
05:24 soldering the diodes
06:19 ... the Teensy 4.1
07:39 ... the microswitches
08:25 ... the joystick and the encoders
08:43 assembling screen and case and Pyssla ;-)
11:18 keycap stickers & Barry
11:48 compiling and installing the Teensy firmware
13:18 installing Debian Bullseye on the Raspberry PI
14:00 installing the LMN-3 DAW
14:19 adjusting touch screen settings
15:17 important considerations
16:00 booting the synth (real time)
17:23 uploading samples, creating a .yaml file for drum sets
18:00 UI overview
18:30 adding a plugin (4OSC virtual analog synth)
18:53 short 4OSC plugin overview
20:18 adding effect plugins
20:56 step sequencer
22:25 adding a drum track
23:37 adding a (chromatic) sampler track
24:16 ... improvising on a track ...
24:46 conclusion / my personal opinion on this device and current internet discussions / whom is this for? / call for developers
26:28 demo track 2 (muting and unmuting while playing)
27:53 demo track 3 (Vangelis impression using an external reverb pedal)
29:38 outro, summary

Links & Resources
The LMN-3 project homepage https://github.com/FundamentalFrequency
PCB Way https://www.pcbway.com/ (thanks again for sponsoring this video)
Raspberry PI 4 https://amzn.to/3AwFhLk
Teensy 4.1 https://amzn.to/3TgoRj3
Visual Studio Code https://code.visualstudio.com/
Raspberry PI installer https://www.raspberrypi.com/software/
The touch screen https://amzn.to/3PXEpVM
Joystick https://amzn.to/3wAOkK8
Nuts https://amzn.to/3RfaJEJ
Bolts (long) https://amzn.to/3Cz0BCR
Bolts (short) https://amzn.to/3R1r6oL
Diodes https://amzn.to/3RdMQgT
Keycaps https://amzn.to/3e5quzG
Switches https://amzn.to/3TqMoho
Encoders https://amzn.to/3wAr7b7
Soldering iron https://amzn.to/3RcdQxT

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Here's what I have in my setup at the moment. Want to have that, too? Please use the followings links and support me:

Yamaha EX5 https://www.ebay.com/sch/i.html?_nkw=...
Kasser Synths Arcade https://www.tindie.com/products/kasse...
MPC One, Novation PEAK, Reface DX, Strymon Nightsky, Strymon Volante, Strymon Iridium, Zoom MS 70 CDR, Korg NanoKontrol 2, Korg NanoKey, Akai EWI USB, Zoom R24, Zoom H5, Yamaha MT7:
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Some bands / artists I've been following for a long time are (among others) Massive Attack, Pink Floyd, Pet Shop Boys, Archive, A-Ha, Yes, Porcupine Tree, John Mellencamp, Jean-Michel Jarre, Metallica, Peter Gabriel and Perturbator. So my music will kind of sound like those (without ever reaching the greatness of those artists, of course). :-)

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