RGB LED Matrix Shield for Arduino Nano ESP32

RGB LED Matrix Shield for Arduino Nano ESP32 WiFi-controlled 13×8 WS2812B LED matrix shield with 104 RGB LEDs. Features web-based control, multiple lighting effects (rainbow, heartbeat, smiley, chase, breathe), and adjustable brightness/speed via built-in HTTP server.

Features

• 104 WS2812B LEDs in 13×8 matrix layout with serpentine column wiring
• WiFi web interface for real-time control from any browser
• Multiple built-in effects: Rainbow, Heartbeat, Chase, Breathe, Theater, Larson, Twinkle, Smiley (static/blink), and Rainbow OP
• Adjustable brightness and speed via web UI
• RMT peripheral for reliable WS2812B timing

Hardware

• Arduino Nano ESP32 (Nano Nora)
• 104× WS2812B RGB LEDs (D11 data pin)
• 8×13 matrix with serpentine column wiring

Web API

Endpoint	Description
/api/state	Get current state (effect, brightness, speed)
/api/power?on=1/0	Power on/off
/api/effect?name=	Set effect mode
/api/brightness?v=0-255	Set brightness
/api/speed?v=1-10	Set animation speed

Effects

• rainbow — Classic rainbow flow
• rainbow_op — Rainbow-colored "OP" letters with hollow interior
• heartbeat — Pulsing red heart
• smiley / smiley_blink — Yellow smiley with red eyes
• chase, breathe, theater, larson, twinkle — Standard patterns
• solid — Static red

Wiring

LED Matrix	Nano ESP32
DIN	D11
5V	5V
GND	GND

Wiki

52Pi Wiki