.... Also, the serial USB adapter part of this lets you use some cool cross-development and remote debugging tools that we use internally.
Are those Windows only or can they be used with a Mac as well?
The tools are developed for and running on Linux, Windows and macOS.
The cases looks great!
Just one question:
Is the port for the rear sd card holder a breakthrough port or does that looks only so in the picture?
here is a more detailed look at inside of the microSD port, this is the SLA printed case so in the final case this might look a tad different.
Matthias I don't have a C65 or exact measurements here but I took pictures of one. Not sure if that will be exact enough for your needs. The squares on paper are 2.5cm wide.