A raspberry pi pico would probably fit in the space available and have all the capability you might need to run mycroft on it. The pi pico has 26 gpio pins whic

A raspberry pi pico would probably fit in the space available and have all the capability you might need to run mycroft on it. The pi pico has 26 gpio pins which should be plenty for what you need as well. And it has a usb on-the-go port.