Saving electricity is important especially in cities where there is not enough to go around anymore. This article shows you how to build a simple automatic light switch that turns things on, and off depending on how light or dark it is outside. This can help you save money on your electric bill. What is […]
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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 […]
Simple Wireless LED Light Circuit
Wireless charging is everywhere these days, from your phone to fancy medical devices. This post shows you how to build a simple wireless LED light circuit using a common chip called the IC 555. It will let you see how wireless charging works by lighting up an LED without any wires! What is a Wireless […]
Red Blue Police Light Flasher Circuit
This article shows you how to build a flashing LED light like police cars use. It uses two common chips called IC 555. These chips are set to different speeds. They are connected to two sets of LEDs wired in a special way antiparallel. This makes the LEDs in each set flash back and forth […]
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 Make a Simple LED Bulb Circuit
LED lights have become super popular lately. They are also called solid state lamps or LED bulbs. These lights are great for saving money on electricity because they use much less power than other bulbs, typically only 0.5 to 3 watts. In 2010, they were not quite as bright as some other bulbs, but this […]