Comparison page

GC9A01 vs HT16K33

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.

GC9A01

Projects needing Round display and TFT with a commonly available displays part.

HT16K33

Projects needing LED matrix and I2C with a commonly available displays part.

Specification Matrix

DimensionGC9A01 HT16K33

CategoryDisplaysDisplays

MakerGalaxyCoreHoltek

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino

Price$4.00 - $10.00$1.00 - $3.50

Known Tradeoffs

GC9A01

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

HT16K33

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

Open Individual Model Pages

GC9A01

GalaxyCore

Round color TFT controller popular in watch-style circular display modules.

China-madeDisplays72% confidence

HT16K33

Holtek

I2C LED matrix and segment driver used in backpack display modules.

China-madeDisplays78% confidence