Making your own synth is a fairly tall order for most of us, but this new PCB from Polykit features all the elements you need to make your own monophonic or polyphonic synth! It features a single VCO with triangle, saw and pulse waveforms, with a ADSR, multiple VCAs, and a pole mixing multi-mode filter with 8 filter responses.
It also has inputs for PWM, FM and synchronization - as well as an external audio input. It seems like a very affordable way to start building your own synth.
More info on the project here: https://github.com/polykit/polykit-x-voice-card
About the author [midierror]: midierror makes nifty Max For Live devices, innovative music hardware, award winning sample packs and hosts a podcast speaking to people in the music world.
Developments for Korg's instrument have been slow but promising.