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Arduino & IoT Academy · Lesson

Lines, Rectangles & Circles

Draw shapes to build a simple UI.

Beyond Text

Text alone gets dull. The GFX library also draws shapes, so you can frame data, build meters, and design a real little interface. 🎨

The Pixel Grid

Every shape lives on a coordinate grid. Point (0,0) is top-left; x runs right and y runs down, just like the text cursor you already used.

All lessons in this course

  1. Wire & Init an SSD1306 OLED
  2. Draw Text in Multiple Sizes
  3. Lines, Rectangles & Circles
  4. Animate a Bar Graph
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