Comparison page

PCA9685 vs WS2812B

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

PCA9685

Projects needing PWM and Servo with a commonly available power part.

WS2812B

Projects needing Addressable LED and RGB with a commonly available power part.

Specification Matrix

DimensionPCA9685 WS2812B

CategoryPowerPower

MakerNXPWorldsemi

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduino, MicroPythonArduino, MicroPython

Price$1.50 - $5.00$0.03 - $0.20 per LED

Known Tradeoffs

PCA9685

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

WS2812B

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

PCA9685

NXP

16-channel PWM controller used for servo control, LED dimming, and robotics projects.

China-madePower88% confidence

WS2812B

Worldsemi

Addressable RGB LED with integrated controller used in strips, rings, and matrices.

China-madePower82% confidence