Uploaded November 2025 | Updated September 2026, 1 week ago
Learn how to create a real-time clock on the Arduino UNO R4 WiFi using both NTP (Network Time Protocol) and the built-in RTC module - all with no external hardware required.
In this tutorial, we’ll show how the UNO R4 connects to the internet to get accurate time from NTP servers, then continues to keep time offline using its onboard RTC. You’ll also see how to control WiFi from the Serial Monitor and display the current time on the LED Matrix.
Perfect for students, educators, and anyone learning about IoT, embedded systems, or Visual Micro debugging in Visual Studio.
🧩 Download the project and portable solution here:
visualmicro.com/page/arduino-uno-r4-wifi-real-time-clock-and-ntp
📺 Chapters:
00:00 Introduction
00:33 What is NTP?
00:43 What is RTC?
01:10 Project Overview
01:56 Upload & Demonstration
02:20 Running Without Internet
💡 Learn, build, and teach Arduino with Visual Micro - the professional IDE extension for Visual Studio.
🔗 Like and Subscribe for more educational Arduino projects and let us know your thoughts in the comments...
Get Visual Micro:
visualmicro.com/page/Arduino-Visual-Studio-Downloads.aspx
Project Description and Download:
visualmicro.com/page/arduino-uno-r4-wifi-real-time-clock-and-ntp
Uno R4 Weather Dashboard Project:
visualmicro.com/page/uno-r4-wifi-weather-dashboard
Learn how to create a real-time clock on the Arduino UNO R4 WiFi using both NTP (Network Time Protocol) and the built-in RTC module - all with no external hardware required.
In this tutorial, we’ll show how the UNO R4 connects to the internet to get accurate time from NTP servers, then continues to keep time offline using its onboard RTC. You’ll also see how to control WiFi from the Serial Monitor and display the current time on the LED Matrix.
Perfect for students, educators, and anyone learning about IoT, embedded systems, or Visual Micro debugging in Visual Studio.
🧩 Download the project and portable solution here:
visualmicro.com/page/arduino-uno-r4-wifi-real-time-clock-and-ntp
📺 Chapters:
00:00 Introduction
00:33 What is NTP?
00:43 What is RTC?
01:10 Project Overview
01:56 Upload & Demonstration
02:20 Running Without Internet
💡 Learn, build, and teach Arduino with Visual Micro - the professional IDE extension for Visual Studio.
🔗 Like and Subscribe for more educational Arduino projects and let us know your thoughts in the comments...
Get Visual Micro:
visualmicro.com/page/Arduino-Visual-Studio-Downloads.aspx
Project Description and Download:
visualmicro.com/page/arduino-uno-r4-wifi-real-time-clock-and-ntp
Uno R4 Weather Dashboard Project:
visualmicro.com/page/uno-r4-wifi-weather-dashboard
