It has been a while since I had the idea in my head of building and eurorack modular synthesizer. But since is so expensive, I’ve been thinking of building some modules by myself.
And some weeks ago I was contacted by Digitspace with the intent of making a sponsored project using parts from their website. Digitspace is an online store aimed for makers and electonics enthusiasts that offers a wide range of products from devboards like Raspberry PI’s, Arduinos, ESP’s and other Iot devices, electronics components, prototyping tools and more. Here’s a short intro taken from Digitspace’s Website:
Digitspace is an open source hardware provider catering to future creators. We supply innovative, user-friendly open source hardware products ranging from boards to corresponding components and kits for worldwide community of engineers, designers, inventors and makers who love creating electronics.
This was the perfect moment to get the VCO project started. Digitspace was kind enough to supply some components and prototyping tools for this project. Whenever an item from Digitspace is mentioned, I will include a link for it on the Digitspace store.
As I mentioned before, I will be designing and building an eurorack VCO module. This will be used to synthesize audio signals with basic shapes like sine, square, sawtooth, triangle and maybe more. The frequency of the signal can by changed by using a course and fine-tune potentiometers or by a control voltage (CV) 1V/Octave input. This allows the module to be controlled by another VCO or device that supports CV. Apart from the CV input, there’s also a frequency modulation (FM) input that allows to make changes to the current frequency. I would also like to add a sync input for synchronization with other devices. I’ve made a quick mock-up for the front panel just to have an idea (nothing here is permanent and will most likely change).
And now the twist: I want to make this completely digital. After taking a DSP course in university I’ve been wanting to apply what I learnt to some projects, and this one would be the perfect candidate for it.
So on the following weeks (months?) I will be building on this project and posting updates on design choices, tests and general updates. So keep tuned for the next posts!
As always, all the files for this will be present and being updated on its GitHub Page