Software and assembly video here:
Case is ideally held together by either melting with a soldering iron or just using glue.
Electronics Used (Including Purchase Links)
WeAct Studio STM32 Core (STM32F405RGT6): https://www.aliexpress.com/item/1005006051651136.html 0.96 SSD1306 SPI OLED: https://www.aliexpress.com/item/1005006595232906.html Tactile Buttons: https://www.aliexpress.com/item/1005004971266223.html 30 AWG Flexible Silicon Wire: https://www.amazon.com/BNTECHGO-Silicone-Flexible-Resistant-Insulation/dp/B01M70EDCW/
The author marked this model as their own original creation.