This is an RP2040-based bling that can detect three keywords: Pi, 3.14, or Irrational
The bling is designed around the RP2040 microcontroller. The following image shows the components of the bling.
The components of the bling on the back side (in numerical order) include:
- RP2040 microcontroller
- Goertek SD18OB261-060 PDM microphone
- Flash memory
- USB-C port
- Li-Po battery port + charger
- IS31FL3737 LED driver
The components on the front side of the bling include 12 WS2812B individually addressable RGB LEDs and 48 RGB LEDs.
Demo
The following video shows the bling in action. It changes color every time a keyword is detected!
A detailed write-up is available from here: Hackster