[Arduino Super Introduction #13] Lighting an External LED | Let's Build Our First Circuit on a Breadboard

Last time, we learned about the anode and cathode of an LED, how to distinguish their orientation, and the role of a resistor in limiting current.This time, we will combine an Arduino, a breadboard, ...

[Arduino Super Introduction #24] Mini Project: Automatic Lighting | Let's Automatically Turn on an LED When It Gets Dark

In the previous chapter, we used a light sensor to read the ambient brightness as a value from 0 to 1023.This time, we will ...
EDN

Photoresistor and Led Experiment with Arduino – Tutorial #11

In this experiment we are going to use a element called photoresistor. This sensor allows us to interact with the external environment, through intensity of light. The photoresistor is based on light ...
Hackaday

LED Tester Also Calculates Resistor For Target Voltage

[mircemk] built a slick-looking LED tester with a couple handy functions built in. Not only can one select a target current to put through an LED, but by providing a target voltage, the system will ...
EDN

Arduino Icicle Lights with LEDs

I had the idea of building this Arduino icicle lights project during the making of the light dimmer circuit and the result can be seen below. Is not a complicated project so it can be done easily by ...