Published January 22, 2025

I2C Displays the Time and Date

Introducing I2C display project: Your sleek solution for displaying time and date effortlessly

BeginnerProtip330

Things used in this project

Hardware components

C&K Switches JS Series Switch

DFRobot I2C 16x2 Arduino LCD Display Module

Arduino UNO

Software apps and online services

PCBX Online Simulation

Story

Introduction

1. Switch 1 controls the I2C display date, switch 2 controls the I2C display time

Simulation Online

To create this project, we utilized PCBX, an online simulation platform that enables us to design and test electronic circuits virtually. PCBX provides a user-friendly interface for creating printed circuit board (PCB) layouts, making it easier to visualize how our components will interact. By using this simulation tool, we can ensure that our design is efficient and functional before moving on to physical implementation.

Through this project, we aim to demonstrate the capabilities of I2C communication in managing multiple displays and the ease of integrating user inputs through switches. The combination of PCBX simulation and our I2C display setup offers an excellent opportunity for learning and experimentation in the field of electronics and embedded systems.

Project details here:

https://www.pcbx.com/community-detail/952ec6775d4a440fa2d880b4f567c5c5

Join the PCBX Community to create your own innovation; for every sharing, a surprise bad will be rewarded.

Code

Untitled file

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED显示屏宽度，SSD1306 128x64
#define SCREEN_HEIGHT 64 // OLED显示屏高度

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

const int button1Pin = 2;
const int button2Pin = 3;

void setup() {
pinMode(button1Pin, INPUT_PULLUP); // 使用内置上拉
pinMode(button2Pin, INPUT_PULLUP); // 使用内置上拉

// SSD1306初始化
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // 请确认I2C地址是否为0x3C
Serial.println(F("SSD1306 allocation failed"));
while (true);
}
display.display(); // 显示初始化图像
delay(2000); // 防止困惑的短暂延迟
display.clearDisplay();
}

void loop() {
if (digitalRead(button1Pin) == LOW) {
displayDate();
} else if (digitalRead(button2Pin) == LOW) {
displayTime();
}
delay(200); // 消抖延迟
}

void displayDate() {
display.clearDisplay();
display.setTextSize(1); // 设置字号
display.setTextColor(SSD1306_WHITE); // 设置字体颜色
display.setCursor(0, 0); // 设置显示起始位置
display.println("Date:");
display.setCursor(0, 10);
display.println("2025/01/06");
display.display();
}

void displayTime() {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
display.setCursor(0, 0);
display.println("Time:");
display.setCursor(0, 10);
display.println("12:34:56");
display.display();
}