Outcome

Initial Goal: Display information on the screen

Realized Outcome: Success

Steps to achieve outcome

1. Step 1
   • [ ] Install Arduino IDE
2. Step 2
   • [ ] Install display Repo
3. Step 3
   • [ ] Edit, upload, and run

Overview

A round LCD display is a screen with a circular, rather than a traditional rectangular, form factor, offering innovative design and often better space efficiency in compact devices. They are used in a wide range of applications, including wearables like smartwatches, automotive dashboards for speedometers and gauges, medical devices for clear interfaces, smart home appliances, and industrial control panels. Round displays can also enhance user experience with intuitive navigation and a unique aesthetic for products that use a circular layout.

A round LCD displays information using a fixed grid of pixels, similar to a square display, with a specific resolution like 240x240. To display information, you connect the display to a microcontroller (like a Raspberry Pi or Arduino), use a graphics library, and send pixel data through a serial interface, often SPI or I2C, which tells each pixel what color to show.

Pixels on a Round LCD

• Resolution:. Despite the round shape, the display has a rectangular grid of pixels internally, with a common resolution being 240 pixels by 240 pixels. Only the center pixels are visible.
• Sub-pixels:. Each pixel is made up of three sub-pixels (red, green, and blue), which are combined to create a full spectrum of colors.
• Driver IC:. A dedicated driver integrated circuit, such as the GC9A01, controls these pixels, and its capabilities dictate the display's features like color depth and refresh rate.

How to Display Information

1. Wire the round LCD display's SPI or I2C pins to a compatible microcontroller like an Arduino, Raspberry Pi, or ESP32.
2. Install Libraries: Use the appropriate graphics library for your chosen microcontroller and display driver (e.g., for CircuitPython or Arduino). These libraries simplify sending commands and pixel data to the display.