Comparison page

GC9A01 vs ST7735

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.

ST7735

Projects needing TFT and Color with a commonly available displays part.

Specification Matrix

DimensionGC9A01 ST7735

CategoryDisplaysDisplays

MakerGalaxyCoreSitronix

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino, MicroPython

Price$4.00 - $10.00$2.00 - $6.00

Known Tradeoffs

GC9A01

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

ST7735

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

ST7735

Sitronix

Small color TFT LCD controller found in many 1.8-inch SPI display modules.

China-madeDisplays80% confidence