Research on the Application of ST7789 Display in IoT Sensor Monitoring System

# Introduction

## 1.1 Research Background

With the rapid development of Internet of Things (IoT) technology, sensor monitoring systems have been widely applied in various fields. Sensors can collect various environmental parameters in real-time, providing vital data support for users. In these monitoring systems, displays play a crucial role as an essential means of information output. This article aims to explore the application of ST7789 displays in IoT sensor monitoring systems, examining their advantages and characteristics in information display and user interaction.

## 1.2 Research Significance

The application of IoT sensor monitoring systems has penetrated every aspect of life, such as smart homes, industrial production, and environmental monitoring. By studying the application of ST7789 displays in these systems, we can provide more ideas and technical support for system design and development, enhancing user experience and system performance.

## 1.3 Research Objectives

The purpose of this research is to explore the specific application methods and effects of ST7789 displays in IoT sensor monitoring systems, to verify their advantages in information display and data interaction, and to provide references and insights for research and applications in related fields.

## 1.4 Research Content and Structure

This article will first introduce the current state of development of IoT sensor monitoring systems and the importance of displays within them. Then, it will provide a detailed introduction to the functions and characteristics of the ST7789 display. Next, it will analyze application cases of the ST7789 in IoT sensor monitoring systems, followed by an explanation of research methods and experimental design, and finally, a conclusion and discussion of future prospects.

# Overview of IoT Sensor Monitoring Systems

### 2.1 Overview of IoT Technology Development

With the rapid advancement of IoT technology, various smart devices and sensors are widely used in monitoring systems, enabling real-time monitoring and remote control of environments and equipment.

### 2.2 Application of Sensors in Monitoring Systems

Sensors play a vital role in monitoring systems, by perceiving environmental data and transmitting it to the monitoring system, thus enabling real-time monitoring and analysis of the monitored object's status.

### 2.3 Introduction to ST7789 Display Technology

The ST7789 display is a commonly used color LCD that features high definition, vibrant colors, and supports SPI interfaces, making it suitable for display needs in various embedded systems.

### 2.4 Importance of Displays in IoT Sensor Monitoring Systems

In IoT sensor monitoring systems, displays are crucial in presenting monitored data to users in an intuitive manner, enhancing user understanding and application of the monitoring system data.

# Functionalities and Characteristics of ST7789 Displays

ST7789 displays, as commonly used displays, possess a wealth of functionalities and characteristics, which will be detailed in this chapter.

#### 3.1 Basic Principles of ST7789 Displays

ST7789 displays employ TFT liquid crystal technology, displaying images by controlling the color of each pixel. The basic principle involves using the