A DIY 7-segment clock built with WS2812b neopixels, ESP-32, FastLED library and 3D printed parts.

Code and Build Intructions 

Features: 

• Fully 3D printed, using only 2 types of PLA filament and a few M3 screws.
• 3d printable on small 3d printers like the BambuLab A1 mini.
• Powered via USB-C.
• Uses ESP-32 S3 (Seedstudio XIAO/WaveShare ESP32-S3 Mini)
• Syncs time with NTP using WiFi and Arduino's Time library
• Hugely customizable due to individually addressable LEDs (WS2812b) paired with the FastLED library
• Auto brightness using Ambient Light Sensor [APDS9930].

Print Quantity: 

• Digits_Top - x2 
• Digits_BottomPlate - x2
• MiddleBox_Bottom - x1
• MiddleBox_FacePlate_Light - x1
• DiffuserCells_Vertical - x16
• DiffuserCells_Horizontal - x12
• [optional] Wallmount - x2

Print Instructions: 

• Only 2 types of filament required: 
  • Body: Any opaque filament (I used Cool White PLA)
  • Diffusers: Transparent colorless filament (I used Natural PLA)
• For the Diffusers, have no more than 2 top and bottom layers. This makes them semi-transparent, and you can then experiment with infill percentage and pattern to give it a pretty nice effect
• For the Digits_Top file, have solid walls. 

Hardware Required: 

• 3D printed parts as mentioned. 
• ESP 32 board in a small size (preferrably Waveshare ESP32 S3 mini OR SeedStudio XIAO)
• WS2812b neopixel strip 1m 60 LED/metre
• (optional) APDS9930 I2C ambient light sensor (or any other ambient light sensor - modify code accordingly)
• (optional) TTP223 touch switch (or similar) 
• M3 screws: 10mm and 25mm
• Solid core wire for connecting LED segments (I used some old ethernet cables)
• Flexible (silicone) wire for connecting various components
• USB-C cable for powering the clock