Displays

Power consumption is one of the most underestimated aspects when selecting a display. Many display problems are not caused by software or wiring, but by insufficient or unstable power supply. This article explains how different display types consume power and what to consider when designing a reliable system. Why Power Matters Displays are often one […]

ePaper displays, also known as electronic paper displays (EPD), are fundamentally different from LCD, OLED or LED-based displays. Instead of emitting light, they reflect ambient light like printed paper and can hold an image without continuous power. This makes them ideal for low-power and always-on applications in embedded systems. What Is an ePaper Display? An

Display technologies are one of the most visible parts of an electronics project. A display can show sensor values, menu settings, status messages, graphics, animations, warnings or decorative effects. This article gives an overview of the most common display types used in Arduino, ESP32, Raspberry Pi Pico and embedded projects, including LCD, OLED, ePaper, 7-segment

Many display problems are not caused by software or wiring mistakes, but by incorrect voltage levels. Modern microcontrollers and displays often use 3.3V logic, while older modules and Arduino boards use 5V. This article explains when level shifting is required, which methods work reliably and which solutions should be avoided. Why Level Shifting Is Important

Choosing the right display is not only about size or price. The best display depends on what the project needs to show, how often the information changes, how much power is available, how many pins are free, and which software libraries are available. This article explains the most important practical selection criteria for LCD, OLED,

Display issues are among the most common problems in embedded systems. A display that stays blank, flickers or shows corrupted data is often caused by simple hardware or configuration mistakes rather than complex software bugs. This article covers the most common display problems and how to diagnose them efficiently. Display Stays Blank A completely blank

Displays are not only defined by their size or technology, but also by how they communicate with the microcontroller. The interface determines how many wires are needed, how fast data can be transferred, and how complex the software becomes. This article explains the most important display interfaces used in Arduino, ESP32, Raspberry Pi Pico and

Small color TFT displays are among the most popular display types in Arduino and ESP32 projects. They are inexpensive, widely available and capable of showing full-color graphics, menus and simple user interfaces. This article explains how TFT LCD displays work, compares the common ST7735 and ST7789 controllers, and shows when to use each type. What

Monochrome graphic LCDs are a practical middle ground between simple character displays and full-color TFT screens. They allow pixel-level control without the complexity, cost and power consumption of color displays. This article explains how graphic LCDs work and compares two common controller families: ST7567 and ST7920. What Is a Graphic LCD? A graphic LCD allows

Round TFT displays are becoming increasingly popular in modern embedded projects. Unlike traditional rectangular screens, they offer a distinctive visual appearance that is well suited for gauges, dials and compact user interfaces. One of the most common controllers used in these displays is the GC9A01. This article explains how GC9A01-based displays work and where they