STM8 to control an 8x8 WS2812B RGB LED Matrix

I made a custom RGB Message Board / Animated greeting card gift that wishes the recipient a very happy birthday! The device cycles through the letters of the message in pastel colors.

Here are some more images documenting the progress:

Adapter to convert TSSOP SMD part to breadboard friendly 2.54mm pinout Adapter to convert TSSOP SMD STM8S003 part to breadboard friendly 2.54mm pinout

Simple blink program running on the STM8 chip Simple blink program running on the STM8 chip. Multiple caps connected in parallel to reach the minimum VCAP needed to drive the chip, replaced with a 1206 1uF MLCC cap later

3D Printed enclosure and diffuser

3D Printed enclosure and diffuser 3D Printed enclosure and diffuser, from “cjmcu 8x8 ws2812 neopixel led matrix diffuser box” by gumslone

Letter I on the matrix Letter H on the matrix Some more images of the device while cycling through the message “HAPPY BIRTHDAY”