KY-034 Automatic Flashing RGB LED Module

The KY-034 Automatic Flashing Color LED Module is a self-contained, eye-catching breakout board built around a 5mm auto-flashing RGB LED that cycles through multiple colors automatically — no programming or PWM control required. Designed for Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontroller platforms, this module is ideal for attention indicators, decorative lighting, visual alerts, and creative maker projects where dynamic color effects are desired with minimal setup effort.

Unlike standard RGB modules, the KY-034 features a built-in integrated circuit inside the LED itself that drives the automatic color-changing sequence, freeing up your microcontroller resources entirely. Simply apply power through its 3-pin interface and the module begins flashing through its vivid color cycle instantly.

Perfect for beginners looking to add visual flair without complex code, or for experienced makers who need a reliable, low-overhead indicator light, the KY-034 delivers vibrant, continuous color transitions in a compact plug-and-play format that fits any project enclosure.

Specification:

• LED Type : 5mm Auto-Flashing RGB LED (Built-in IC)
• Color Sequence : Automatic multi-color cycling
• Operating Voltage : 3.3V – 5V
• Forward Current : 20mA
• Pins : 3 (Signal, VCC, GND)
• Compatibility : Arduino, ESP32, ESP8266, Raspberry Pi
• PCB Dimensions : 18.5mm × 15mm
• Weight : ~1g