This article shows you how to build a circuit that automatically turns things on and off depending on how light it is outside. You only need a few parts: a special switch called a triac, a light sensor LDR and a resistor and capacitor. This circuit can be used to turn on lamps at night […]
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Simple USB Lamp Circuit
This circuit shows you how to build a mini nightlight powered by your computers USB port. All you need is a few basic parts: A USB plug like the one on the end of your phone charger. An LED a small light that does not use much power. A resistor a tiny part that controls […]
Simple Triac Flasher Circuit
This article shows you how to build a circuit that makes a normal light bulb blink on and off. You can use a knob to control how fast the light blinks, from about 2 times per second to 10 times per second. What is a Triac Flasher Circuit: A Triac flasher circuit is an electronic […]
Simple 220V AC Light Dimmer Circuit
This post shows you how to build a 220V AC light dimmer switch for your home lights. This dimmer works by chopping up the electricity at just the right moment allowing you to control how bright the lights get. Building circuits with high voltage can be dangerous. Only do this with adult supervision and a […]
Simple Neon Tube Flasher Circuit
Neon lights are cool, but they usually need a lot of power to work. This article shows you how to build a special circuit that lets you use a small battery pack low voltage DC power supply to make a neon light flash on and off. WARNING: Building circuits with high voltage can be dangerous. […]
Simple Music Level LED Indicator Circuit
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 […]