Blinkt! APA102 RGB LED Hat for Raspberry Pi

Eight super-bright RGB LED indicators that are ideal for adding visual notifications to your Raspberry Pi without breaking the bank! Blinkt! offers eight APA102 pixels in the smallest (and cheapest) form factor to plug straight onto your Raspberry Pi.

Each pixel on Blinkt! is individually controllable and dimmable allowing you to create gradients, pulsing effects, or just flash them on and off like crazy. The data and clock lines are connected to GPIO #23 and #24 respectively but for simplicity you can just use Pimorini's Python library to drive them.
Features:

• Eight APA102 RGB LEDs
• Individually controllable pixels
• Sits directly on top of your Pi in a tiny footprint
• Fits inside most Pi cases
• Doesn't interfere with PWM audio
• Blinkt! pinout
• Compatible with all 40-pin header Raspberry Pi models
• Python library
• Comes fully assembled

Useful Reference: Blinkt! Python library