eurorack-awesome
EuroPi
eurorack-awesome | EuroPi | |
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11 | 34 | |
332 | 398 | |
- | 3.5% | |
1.8 | 8.6 | |
over 1 year ago | 5 days ago | |
Python | ||
MIT License | Creative Commons Zero v1.0 Universal |
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eurorack-awesome
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DIY Recommendations
For open source gerbers you can send off to get made there is lots of stuff out there. This is a big list on Github. I've built the nickajeglin analog logic module which is really good. Maasijam has some really good stuff as well.
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Hardware List
There's a good list in Eurorack-awesome although many are analog designs.
- OpenSource ??
- Best examples of open source synth projects?
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[HELP] Multiple MIDI-2-CV OUTs circuit with Teensy
if you’re okay with 0-5v cv there are lots of references like https://github.com/mattb/teensy-cv. more here https://github.com/newdigate/eurorack-awesome
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Where can I learn how to build synths ?
A good place to start is sdiy and the legendary modwiggler forum modwiggler or github. github
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Getting Started: Questions about DIY.
With that background, if you're comfortable with schematics and doing pcb layouts, open-source modules can be the cheapest way to go. Here is a link with a bunch of github repos. Some have gerber files, you can send off to somewhere like JLCPCB to have the panels and PCBs made. Minimum order is 5 I think.
- Which companies make their modules open source?
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Questions before I take the plunge
You can get a lot cheaper with some of the open source stuff out there. Here is a link with a lot of stuff. You'll have to source companies to do panels and pcbs.
- I want to start diy synth building but where do I start?
EuroPi
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Using a Raspberry Pi Pico as a cheap multi-channel DAC for pitch CV
Hi all, I'm making a Eurorack sequencer module with 4 pitch CV outputs (NOT audio) and I've noticed that DACs are kind of a pain due to being expensive, SMT-only & still requiring buffering with op amps. I figure that a good alternative would be to buy a Raspberry Pi Pico for $4 which will give me 8 PWM outputs that I would then hook up to an output stage like the one in the europi (shown here: https://github.com/Allen-Synthesis/EuroPi/blob/main/hardware/EuroPi/schematic/europi_schematic.pdf)
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What is your favorite open source eurorack module? And the best documented?
Bom has links for sourcing parts
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Is it really necessary to put opamps in front of my ADC inputs?
Up until now I've been using the analog input stage from the EuroPi schematic as my model for a CV in. You can see it here:
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Easiest/cheapest way to get multiple (9-12) analog cv outputs (0-5V volt) from a single microcontroller/arduino
There is no super cheap way to get a lot of analog outputs from an MCU. Filtered PWM is your best bet for cost effectiveness (I recommend looking at the EuroPi from allen synthesis : https://github.com/Allen-Synthesis/EuroPi). Otherwise if PWM doesn't work for you, you'll need to look into DAC chips. The MCP4728 is a good spot to start, it's 12-bit and has 4 channels: https://www.adafruit.com/product/4470. Since it's I2C controlled you can have multiple of them on one bus. Maybe looking into a 16 channel PWM driver for a lot of outputs: https://www.adafruit.com/product/815. Hope this helps!
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My Raspberry Pi Pico based Eurorack module has a new software release!
The project is completely open-source and open hardware, and the contributors together have made this big list of scripts that you can run using a menu system!
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My reprogrammable DIY module (EuroPi) has just had a new free software release!
The project is entirely open-source but I do also sell the Panel+PCBs on my site!
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Best microcontroller for DIY modules?
Check out the EuroPi project https://github.com/Allen-Synthesis/EuroPi
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Firmware hacking with Uncertainty
EuroPi Turing Machine script is feeding the Uncertainty cv input with pulse 1 opening an envelope on Maths for voice 1 & 2, pulse 2 opens the second Maths envelope for sub osc voice 3. A little delay added for texture. That's pretty much it!
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Hardware List
EuroPi - A reprogrammable Eurorack module based on the Raspberry Pi Pico
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A Question, for anyone that knows how MI firmware code works
The patch.init() is still a great way to start, but you could save some money ditching the audio i/o and build yourself an EuroPi. However, that requires DIY, obviously.
What are some alternatives?
awesome-open-source-supporters - ⭐️ A curated list of companies that offer their services for free to Open Source projects
typhoon-manual - Manual / Cheatsheet for Typhoon module
Quatro - QUATRO is a quad VCA and mixer based on Veils, by Mutable Instruments. Original design by Émilie Gillet - CC BY-SA 3.0. Through-hole remix by Kevin Olivella.
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
schema-cave - Various old schematics of retired and unreleased modules.
thonny - Python IDE for beginners
bookmarks - :bookmark: :star: Collection of public dev bookmarks, shared with :heart: from www.codever.dev
squares-and-circles - squares-and-circles is an alternate firmware for the Eurorack module O_C, targeting Teensy 4.
SWN - Spherical Wavetable Navigator source code
Apeks - 12-bit through-hole adaptation of Mutable Instruments Peaks
DLD - Dual Looping Delay module
TuringMachine - Turing Machine Mk 2 Main Module