Category: Electronics Projects

How to Interface Multiple I2C LCD to Arduino

Engineeering Projects
interfacing multiple i2c lcd with arduino

Sometimes, we must connect multiple LCDs to Arduino to display parameter readings or messages. In the tutorial “How to Interface Multiple I2C LCDs to Arduino,” you will learn how to interface multiple 16×2 I2C LCDs to your Arduino. After completing this tutorial, you will able to know: Select a different address for a 16×2 or 20 x 4 I2C LCD. How to interface multiple I2C LCDs with your Arduino? How to select a different address for different 16×2 LCD We have to configure some hardware to select the address of…

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Interfacing the CHT8305 Sensor with ESP32: Real-Time Temperature and Humidity Display

Engineeering Projects
cht8305 i2c temperature and humidity sensor

The CHT8305 sensor is a reliable temperature and humidity sensor popularly known for its high accuracy and low power consumption. It uses I2C to talk, and the device interfaces easily with most microcontrollers like Arduino and ESP32. Adding a 20×4 I2C LCD display to your setup is a great way to easily monitor real-time temperature and humidity values. In this article, I’ll walk you through how to interface the CHT8305 sensor with both Arduino and ESP32, and we’ll also incorporate the LCD display. I’ll break down each step, provide the…

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How to Set Up a Real-Time Clock (RTC) with ESP32 and DS3231 Using NTP Time Synchronization

Engineeering Projects
How to Set Up a Real-Time Clock (RTC) with ESP32 and DS3231 Using NTP Time Synchronization

Introduction Accurate timekeeping is crucial for electronics and IoT projects. A Real-Time Clock (RTC) is essential for maintaining precise time, especially during power outages. However, more than relying solely on the RTC module might be required for long-term projects due to drift over time. This is where Network Time Protocol (NTP) comes in. By synchronizing the RTC with an internet time server, you can ensure that your system stays perfectly in sync, regardless of how long it runs. In this guide, we’ll show you how to set up a Real-Time…

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Multi-Switch Relay Control with EX-OR Gates

Engineeering Projects
relay control with ex or gate

Many electronics enthusiasts love to design their custom control circuits. Today, we’re exploring an interesting circuit that accomplishes single relay control through multiple switches. This circuit accomplishes this achievement and introduces the utilization of EX-OR gates within control systems. Check out the article on “How to make relay switch circuit” Before we delve into the circuit’s details, let’s first understand what an EX-OR gate is. Exclusive OR Gate An exclusive OR gate, often abbreviated as EX-OR performs the following logic “The output of a 2-input Exclusive OR gate assumes the…

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Simple Intruder Alarm Circuit

Engineeering Projects
receiver unit of intruder alarm circuit

In a world where safety and security are a major concern, imagine having a reliable intruder alarm system that can offer peace of mind. Here is a simple intruder alarm circuit that does not need a deeper understanding of electronics. These homemade security solutions are cost-effective also. So, if you are a DIY enthusiast or just curious about creating your own security setup. Here is a customized intruder alarm circuit that suits your needs perfectly. Let’s dive into its description and working methodology. Circuit Description of Intruder Alarm Circuit The…

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Exploring the ICL8038: Building an Audio Function Generator Circuit

Engineeering Projects
audio function generator circuit

Introduction: In the world of electronics, different types of waveforms are essential for testing various circuits. A sine wave signal is commonly used for assessing linear circuits such as amplifiers and filters. In contrast, a square wave input becomes crucial when testing digital circuits like flip-flops, counters, and registers. In this article, we’ll delve into constructing and operating an audio function generator utilizing the specialized integrated circuit, ICL8038. Notably, this audio function generator circuit offers not only sine and square waves but also triangle waves. Circuit Description and Operation of…

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Making Your Own Dual-Tone Doorbell Circuit Diagram

Engineeering Projects
dual tone doorbell circuit diagram

Imagine opening the door to a gentle ding-dong sound that evokes the charm of classic electric bells. With our simple tutorial, you can create a simple yet attractive dual-tone doorbell circuit diagram that generates this lovely sound. Let’s plunge into the details of the circuit. Description of Dual-Tone Doorbell Circuit Diagram Our inventive dual-tone doorbell circuit diagram is assembled around the versatile IC CD40106, also known as a hex Schmitt-trigger inverter (referred to as U1). For precise triggering and to prevent any unintended activations, we’ve cleverly integrated an R-C filter…

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How to: AC Voltage Measurement using Arduino without Transformer

Engineeering Projects
ac voltage measurement using arduino without transformer

In electronics, Arduino has reshaped how we tinker with technology. Voltage measurement is a core aspect, but dealing with AC voltage adds complexity, especially without a transformer. Usually, transformers isolate high AC voltages for measurement. But when space or components are limited, Arduino offers an alternative. In this article, we’ll unravel measuring AC voltage using Arduino without the bulky transformer. Component Requirements for AC Voltage Measurement using Arduino without Transformer Arduino Board x 1 Grove- AC Voltage Sensor x 1 I2C LCD x 1 Circuit Description of AC Voltage Measurement…

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Building a Programmable Touch Power Supply Circuit

Engineeering Projects
Building a Programmable Touch Power Supply Circuit

Today, many gadgets use touch control – a simple touch makes things happen and adds a modern touch. People who enjoy electronics are creating their power supplies with LM317 variable IC regulators and special switches for power adjustments. There’s a cool project here called the “Programmable Touch Power Supply Circuit” It’s not just a regular power supply – it has touch magic. You can change settings by touching it, mixing tech with simplicity. Imagine devices without buttons – this project uses touch sensors. No searching for buttons – just touch…

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Optimizing Speaker Performance with Woofer and Tweeter Matcher Circuit

Engineeering Projects
woofer and tweeter matcher circuit diagram

Discover how a woofer and tweeter matcher circuit enhances audio systems by producing balanced sound. Learn how specialized components optimize low and high frequencies, leading to an enjoyable listening experience. Introduction: A speaker’s frequency response plays a crucial role in delivering high-quality sound across the audible spectrum. However, not all speakers can reproduce frequencies uniformly, leading to an imbalanced sound output. To overcome this challenge, audio systems incorporate specialized components known as woofers and tweeters, each optimized for handling specific frequency ranges. Woofer and Tweeter Function: Woofer: A woofer is…

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