However, the USB-C specification only accounts for ... I built a female barrel jack to female Type-C adapter so that I could use nice silicone flexible cables with my Pinecil and a barrel jack ...

You're probably most familiar with the USB-C to female 3.5mm adapter ... Of course, you may also need an adapter that goes the other way around, converting a USB Type-A port into a Type-C port.

Syntech provides a male USB-C and a female USB-A 3.0 connector ... a little bit more flexibility than what a simple Type-C to ...