About this 3D model
Small and neat case / enclosure for USB to TTL adapter: http://got.by/3mso9k (USB to UART: RX-TX for Arduino Pro Mini and other boards with COM port) Works fine, protects the board from accidental shortcuts. No screws, just a lock to hold the cover (see a picture with a section) UPDATE: Shared Fusion360 source file for you to be able to adapt it for your particular requirements... If you like my design, please, consider making a small "cup of coffee" donation using PayPal