The sceen is a 128x64 1.3inch OLED, it's supposed to be a SSD1306 but it'll only work as SH1103.

Behind the screen there's a Wemos D1 Mini Pro, it turns on when the box opens.

Still a work in progress.

Greetz:

• Microstrat https://www.youtube.com/user/microstrat (Space Invaders Arduino code)
• Anewsome https://www.thingiverse.com/thing:82620 (3D printable buckle box)