Big bulky speakers are a thing of the past for sound systems. Today, most systems use a special part called a complementary output stage to make them smaller and work better. This article will take a look inside a small 1 watt amp and show you how it works, step by step. What is a […]
Making a Sound Operated Music Bell Circuit
Have you ever wished everyday sounds could be like music? Well, with a sound operated music bell they can be! These bells use special parts to pick up noises and play a little tune instead of just ringing. You can build your own with some creativity and a few things you can buy at an […]
Designing a Simple Solar-Powered Plant Watering Alarm Circuit
Solar power is a clean and never ending source of energy we can use for many things. This article shows you how to build something cool with solar power: a plant waterer that works by itself and tells you when your plants are thirsty. It is a fun project that combines using the sunsenergy with […]
Building a Water Level Indicator Buzzer Circuit
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 […]