Now that you've seen how to blink your Arduino's LED, we'll use one final, slightly more complex example: we'll use a third-party UNO breakout board and an external traffic light sensor board to ...

LEDs are a wonderful technology. You put in a little bit of power, and you get out a wonderful amount of light. They’re efficient, cheap, and plentiful. We use them for so much! What you migh… ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot ...

He ended up using multiple 74138 decoder/multiplexer IC’s to control the LED’s. Since the columns have inverted outputs, he couldn’t just hook them straight up to the LED’s.

After some searching, I ended up using a microcontroller and a piece of code borrowed from the web that I tweaked and adapted. The microcontroller-based concept was chosen because I wanted to scale ...

You can use any knit sweater, but light-colored ones work best, as the LED light will bounce around more. A loose fit is key, too—it’ll prevent the string of lights from showing and it’ll be ...

How to Light Your Jack-o'-Lantern the Arduino Way. ... If you want to try this out using a resistor and an LED, here is a simple Arduino UNO Sketch that will dim and brighten the LED in this circuit.