Grayscale is now developing modules that are compatible with the Buchla 200/200e series. The lineup will include original designs along with adaptations of the open-source modules created by Mutable Instruments and others. A full website is coming soon. Until then, visit ModularGrid for a preview of what's in development.
Dual Algorithmic Oscillator
The first release is the Dual Algorithmic Oscillator, based on Braids by Mutable Instruments. Compatible with Buchla 200/200e cases and voltage standards. This is a preorder. The second batch of DAO modules will be shipping in April/May 2018.