#led
led circuits ready to build, each with a parts list, a schematic and a picture showing how to connect it. Want to change something? Make your own copy in one click.
Newest circuits
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Automatic Night Light
A simple night light that turns on an LED automatically when it gets dark. No microcontroller needed: just a photoresistor, a transistor and two resistors on…
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Variation on Blinking LEDs
This circuit uses no MCU and blinks each of the lights using a capacitor and transistor. I found the original circuit on www.circuitdiagram.com . I used…
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555 Timer: Blink LED
Here's how to build a simple LED blinker using a 555 timer. The 555 timer is configured as an astable multivibrator, which means the output will turn on and…
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Simple Flashlight
This shows a very simple flashlight project with a LED and a resistor. The switch controls if the light is on or off. Build this into a small casing, and you…
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Basic LED circuit
Never built a circuit before? Then start here. You can build this in a couple of minutes. It's a simple LED circuit that's powered by a 9V battery.