Features: For STM32F042F6P6 for MCU with internal oscillator. For SWD header for easy debugging (not populated by default). Dual USB port (Vertical or Horizontal) with breakout pin header for USB header. I2C Screen connections for 1.3inch display with jumpers on back for selecting which pins (1 or 2) are power and ground. EN11-style click encoder support. Reset button. Specifications: Material:P C B Size:approx. 8X3.5cm/3.15x1.24in 3 GPIO pin header 1 on-board for Neopixel with data line broken out for expansion In addition to the parts for PCB and parts for SMD (see for BOM), you will need: Device for Encoder/for DigiKey Reset Switch 6mm Tactile buttons 4.3mm Tall An OLED display 1.3inch Pin Header Assortment Male forDupont-Style and/or for JST-XH Style (Can be nice for USB as it is polarized) Optionally you can get: For Neopixels or look on other platform for bare 5050 for Neopixels Micro USB port (for Horizontal for Molex 105017-0001 or equivalent) or (for Vertical for Molex 105017-0001) Note: Due to the lighting effects and shooting angles, there might be some color difference, please understand. Due to manual measurement, there might be a tolerance in the product size. Package includes: 1PC x Screen Display