This is a circuit that tells you how much water is in a tank. It beeps like an alarm when the water level gets too high or too low. We will build one using transistors electronic parts that will only beep when there is water between two metal sensors placed inside the tank. This guide […]
How to Build Basic Fire Alarm Circuit
Every home needs a fire alarm! It is a small device that can save lives by letting you know about a fire early. This article shows you how to build a basic fire alarm circuit yourself. It is perfect for smaller places like homes, offices or workshops that do not need a super complex system. […]
Building a Laser Alarm Circuit for Security
Want to be your own home security hero? This guide will show you how to build a basic laser alarm circuit, like something a real spy might use. It is a fun project you can do yourself to protect your stuff, and it is easier on the wallet than fancy store bought alarms. What is […]
Simple Rain Detector Alarm Circuit
Do not want your laundry getting soaked in a surprise downpour? This article can help. We will show you how to build a simple rain alarm circuit. This circuit uses a sensor to detect raindrops and then sounds an alarm so you know to bring in the umbrellas or anything else outside. Rain detector circuits […]
Automatic Street Light Circuit using LDR
In this post we learn how to build an automatic street light circuit using LDR and relay. Introduction: Saving energy is important, so lots of places are using special street lights with LEDs that turn on by themselves! These lights sense darkness using a light sensor called an LDR, which helps save power. This article […]
Adjustable Timer Circuit using 555 IC with Buzzer
In this article, I will show you how to create a timer circuit that can be adjusted with a buzzer using the IC 555. To me a timer is like a miniature clock designed for electronics. These timers have the ability to switch things on and off at predetermined times. We come across them in […]