Thanks! Actually I already have the STM32F3DISCOVERY board which the Rust embedded discovery book is based around. So if it fits the requirements for the CV controller, I might just use this one to get started. It’s a bit bulky and has quite a few features that the controller probably won’t make use of, but I can still replace it with a Feather or a smaller STM32 board as soon as I’m more familiar with the Rust embedded toolchain…