Arduino & IoT Academy · Lesson

Draw Text in Multiple Sizes

Print labels and values at different scales.

Text Is Just Pixels

The OLED has no letters built in. The GFX library paints each character as a tiny pattern of pixels, so you control exactly how text looks. ✍️

On a monochrome OLED, color means on or off. Call setTextColor with WHITE so your letters light up against the dark background.

display.setTextColor(WHITE);