IoT

Explore IoT tutorials and projects @Nenadsky.com. Learn about the latest IoT technologies, development techniques, and innovative applications

Controlling Lightbulb: A Beginner’s Guide to Using Relays

Nenadsky
2024-12-122024-12-11
Arduino

Arduino microcontroller and guides and video tutorials

Introduction to Relays and Arduino

Relays are electrically operated switches that allow low-voltage circuits to control higher-voltage devices. In the context of using Arduino, a popular microcontroller, relays serve as a crucial interface between the low voltage output of the Arduino and the high voltage required by lightbulbs. This capability is essential for projects that involve home automation or any applications requiring control over high-power devices while ensuring user safety and device integrity.

Nenadsky
2024-08-312024-08-31
Arduino

In this post, you’ll learn how to use a shift register (IC 74HC595) and a 7-segment display (model 5161AS) to track people entering and leaving a room. With these components and a few buttons, you’ll build a system that displays the current number of people in the room. Previously, I covered using the 7-segment display and shift register separately; now, I’ll show you how to combine them and add some cool effects to the display.

Nenadsky
2024-02-082024-07-04
ESP32

Alright, let’s cut to the chase. You’ve heard the buzz about the ESP32 microcontroller, and you’re itching to get your hands dirty with it, right? Well, you’re in luck! We’re about to embark on a geeky adventure through the circuit basics, breaking down the nitty-gritty of this tiny yet mighty powerhouse. We’ll take a gander at what makes the ESP32 tick, its pinout that’s as vast as the ocean, and why it’s the go-to chip for hobbyists and pros alike. So buckle up, ’cause this ride’s going to be electrifying!

Nenadsky
2024-01-022024-07-04
Arduino

This project, although simple, contains several elements essential for working with Arduino and in general with microcontrollers. In addition to working with the RGB diode, the project involves using the analogWrite function to work with (certain) digital pins. Using this function implies the use of PWM signals, and also includes usage of user functions.

Nenadsky
2023-10-192024-07-04
Arduino

In the age of classic cameras and darkrooms, photography involved developing images in light-proof rooms using chemical mixtures. To ensure successful image development, preventing light from entering the darkroom was crucial. This project involves developing an electronic circuit to control the operation of two LEDs, indicating the darkroom’s availability.

Nenadsky
2022-09-302024-06-30
Arduino

Measuring the distance between two objects is important when talking about the organization and planning of space. This project makes it possible to do it in a simple, easy and relatively inexpensive way using an Arduino and an ultrasonic sensor HC-SR04. The only limitation imposed by the application of this sensor is the maximum range of 4m. For the needs of a hobby project in the household, it can get the job done, and quite well.

Nenadsky
2022-08-052024-06-30
Arduino

Although this assigment raises some ethical issues that I disagree with, I will deal with solving and explaining this problem. The assigment is to design a game of chance for elementary school students (assigment says so), where a randomly chosen number from 1 to 6 will be printed on the LCD display – in simpler terms, it is a simulation of throwing a dice.

Nenadsky
2022-07-192024-06-30
Arduino

Summer has started and hiding from the heat, a new video tutorial arrives. The project of creating a simple advertisement using the MAX7219 integrated circuit – LED matrix driver, LED matrix module and Arduino. This task can be solved in a simple way by using external libraries for working with the MAX7219 and the LED matrix in a few lines of code. As a result, an attractive text animation is obtained. It is possible to connect several LED matrix modules, the complete impression would be better.

Nenadsky
2022-07-122024-06-30
Arduino

For the purposes of creating a simple advertisement, i.e. for a project in which an LED matrix will be used to display animated text, I used two additional libraries. I chose them because I think it was the simplest solution for working with the MAX7219 IC and animating the text. To begin with, a little about the libraries themselves, and the project will be described in the following text. The libraries in question are MAX72xx and Parola.

Nenadsky
2022-04-122024-06-30
Arduino

The assignment is the realization of New Year’s LED lighting that will have certain light effects while the user is enabled to control the brightness intensity in the range from 0 to 100% with two push buttons. Here you will find detailed instructions and explanations of the program. I started with the 6th task from the collection, and there will be more similar texts soon. The practice so far has been to make a video clip and explain the task through text on the blog, and now a document will be available for download.

IoT

Controlling Lightbulb: A Beginner’s Guide to Using Relays

Introduction to Relays and Arduino

DIY Arduino Project: Room Occupancy Counter with 7-Segment Display

ESP32 Microcontroller: Master the Basics

Learn Arduino with RGB Traffic Lights

Arduino Project: Access Granted Indicator

Build an Arduino Ultrasonic Ranging Device

Arduino Dice Roller: Random Number Display on LCD 1602

Simple Arduino Advertisement Display Project

Parola and MAX72xx Libraries for Arduino

Arduino LED Brightness Control with Buttons