Engineering Projects

Temperature and humidity monitoring is an essential aspect of IoT, smart agriculture, industrial automation, and home automation systems. DHT11 and DHT22 are two widely used low-cost temperature and humidity sensors that offer digital output and are easy to interface with microcontrollers like Arduino, ESP32, and Raspberry Pi. We’re gonna tear these sensors apart (not literally, please), see how they tick, and, most importantly, learn how to hook ’em up with Arduino for your next project. By the time you finish this guide, you’ll know: How these sensors actually work. The…

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Electricity is a mystery. We use it, we pay for it, but do we really understand how much each device is consuming? Ever felt like your electricity bill was higher than it should be, but you couldn’t pinpoint the culprit? Well, my friend, today we’re gonna unmask those energy-hogging appliances by building an AC Power Monitor using Arduino and ACS712! This little DIY project is like giving your home X-ray vision for power usage. You’ll be able to measure voltage, current, and power consumption in real time. And, as a…

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This project is perfect if you’ve ever wondered how to build a user-friendly countdown timer with an interactive menu, memory storage, and buzzer alerts. This step-by-step guide will walk you through creating an Arduino countdown timer using an I2C 20×4 LCD, push buttons, and a buzzer. The functions of this timer include setting and saving the countdown time, pausing and resetting, and even with buzzer notifications loudly when the time is up. This project is great for beginners, but it’s also feature-packed for advanced makers. In addition, it uses EEPROM to store your settings, so your countdown configuration will survive even when power is lost. Let’s get started! Why Build an Arduino Countdown Timer? Timers are an integral part of a wide variety of activities, from cooking and workout routines to the operations in industry. While there are many timers commercially available, building your own enables feature customization, serves as an introduction to learning about…

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Ever found yourself squinting at a bright day, thinking, “How much light is actually hitting my face?” Well, using an Arduino light meter that guesswork is gone. You’re practically giving your Arduino a pair of shades, but this one isn’t there to block the light-it’s there to measure it. Sounds cool, right? Let’s dive in. Why Build a Light Meter? Imagine having a gadget that tells you how bright your workspace is, or whether your plants are getting enough sunlight. That’s the power of this little project. Using an ambient…

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