This project lets you build a circuit with LEDs that light up in order as the music gets louder or softer. The circuit reacts quickly to changes in music volume making the lights move like a wave. We will take a closer look at how the circuit works and what parts you need to build […]
Indicator Circuits
Simple Temperature Indicator Circuit using a Single Transistor
Building a basic temperature sensor is easier than you might think. This post shows you how to make one with just a single transistor, a diode and a few other simple parts. What is a Temperature Indicator Circuit using a Single Transistor: A temperature indicator circuit using a single transistor is a simple electronic circuit […]
Simple 4 LEDs Water Level Indicator Circuit
Saving water is important, and electronics can help. This guide shows you how to build a simple water level indicator circuit yourself. It uses common parts and is much cheaper than buying one in a store. This circuit uses LEDs to show you how much water is in something like a tank or barrel. It […]
IC LM35 Temperature Indicator Circuit
Keeping track of temperature is important for a lot of things, but sometimes you do not need a fancy computer to do it. This guide shows you how to build a simple temperature sensor with an LED light using a common chip called the IC LM35. It only uses a few parts and does not […]
3 LED Battery Voltage Level Indicator Circuit
A healthy battery is important for your car or any machine with a battery to run well and avoid problems. This post shows you how to build a tool that checks your battery voltage and tells you if it is low, good or overcharged. It works with most 12V car batteries, but with a small […]
How to Build a Two LED Temperature Indicator Circuit
This guide will show you how to build a cool circuit that uses two LEDs to show temperature. It can be used for all sorts of things, like: Checking the water temperature in your shower to avoid getting scalded Making sure your electronics are not getting too hot, like amplifiers, heaters, computer parts or even […]