Displays

7-segment displays are one of the simplest and most effective ways to display numbers in electronic projects. They are bright, easy to read and widely used in clocks, meters, counters and measurement devices. This article explains how 7-segment displays work, the different types available and how they are used in embedded systems. What Is a […]

Driving multi-digit 7-segment displays directly from a microcontroller can quickly become complex due to multiplexing, current control and timing requirements. Driver chips simplify this by handling most of the low-level work. This article explains how common driver chips work and compares CH423, TM1637 and MAX7219. Why Use a Driver Chip? A raw multi-digit 7-segment display

LED dot-matrix displays allow you to show text, symbols and simple graphics using a grid of LEDs. They are brighter than most LCD or OLED displays and are ideal for scrolling text, indicators and visible status displays. This article explains how LED matrix displays work and compares common driver solutions: MAX7219, TM1640 and IS31FL3731. What

WS2812B LEDs are one of the most flexible ways to create colorful visual output in embedded systems. Unlike traditional displays, each LED can be controlled individually, allowing full RGB color control and dynamic effects. This article explains how WS2812B LEDs work and how they are used in strips and matrix displays. What Are WS2812B LEDs?

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