A versatile "No Load" 8 LED Digital Signal status monitor / a STM8 Microcontroller board / a LED Scanner / a LED Dice etc.
Homepage: https://digicoolthings.com/8-bit-led-thing-this-is-pretty-cool
Firmware is programmed via the SWIM interface, using a ST-LINK V2 USB Programmer (or alternative), via ST Visual Programmer.
Handout provides board connections and operating modes.