RGB LED has four terminals: Red, Cathode, Blue, and Green. LED pins are connected to Arduino pins 11, 9, and 8. Resistor is connected between LED anode and Arduino output pins. Resistor prevents LED from burning due to high current
Tutorial requires Arduino Uno, RGB LED, resistors, potentiometers, breadboard. RGB LED comes in common cathode or common anode types. Common cathode LED connects longer pin to ground
Upgraded version of original ReSpeaker Mic Array v1.0 with XVF-3000 chipset. Features 4 high-performance digital microphones and 12 programmable RGB LEDs. Supports USB Audio Class 1.0 and works on Windows, macOS, and Linux. Includes voice recognition algorithms like Direction of Arrival and Acoustic Echo Cancellation
WS2812B RGB LEDs, ESP32 board, and I2S mic needed. ESP32 must be connected via USB and connected to 2.4 GHz WiFi. Installation requires firmware flashing and Wi-Fi credentials
Project controls RGB LED colors through smartphone and HC-06 Bluetooth module. Six colors controlled through buttons or three sliders. Colors displayed on layout and values shown in labels. Values from 1 to 6 sent to Arduino via Bluetooth
Power Pi is a wireless-powered Raspberry Pi with built-in battery pack. Version 2 features five sections including RGB LED base and fan assembly. System works with Raspberry Pi 4, Pi1, Pi2, Pi3, and Pi5