This article shows you how to build a circuit that can turn things on and off with sound. It uses a special part called a relay to control things that use more power, like lights or motors. This could be useful for things like: We will show you exactly how to build it and how […]
Sensors and Detectors
Simple Non Contact AC Mains Voltage Detector Circuit
Electricity powers our world, but it can also be dangerous. This post shows you how to build a handy tool that can detect live wires without touching them. This is a great safety tool for people who work around electricity, but also for anyone who wants to be careful at home. WARNING: Even with this […]
Simple Soil Dryness Detector Circuit
Plants need water to grow healthy and strong, just like people do! It can be tricky to know when to water your plants, though. This article shows you how to build a soil moisture sensor. This device will tell you when your soil is dry and needs watering. The guide even includes some easy to […]
Simple ON OFF Touch Switch Circuit with Relay
Nowadays, touch buttons are widely used since they are a cool method to control devices. This article shows how to use a common chip known as the 555 IC to create a simple touch switch. To make it work you do not require any costly or difficult parts. For beginners or those who enjoy electronics […]
Simple Rain Detector Alarm Circuit
Do you wish to avoid a sudden downpour from wetting your clothes? This article can teach you something. We’ll show you how to build a simple rain detector alarm circuit. In order to warn you when to bring umbrellas or other outside objects inside, this circuit uses a sensor to detect rainfall and then sounds […]