Looking for a simple circuit to control the light intensity of Light Emitting Diodes (LEDs) or similar lighting sources? Here is an Arduino based circuit with three independent pulse width modulated ...

Intensity of light (on LDR) ↓ - Resistance↑ - Voltage at analog pin↓ - Duty cycle (PWM)↑ - Brightness of Power LED ↑ If its full bright outside (when analog value increases more than 500) the power ...

In this tutorial, we are going to look at how to interface RGB Neopixel LEDs with an Arduino. We will be interfacing the WS2812B LEDs which are also known as NeoPixel.

To build a system where an LED blinks whenever the IR sensor detects an object within its proximity range. This can be used in various applications, such as a simple object detection system or a ...

The Arduino then controls the state of the LED using the active high enable line from the column multiplexer chip. [Alex] wanted more than just a static image to show off on his new display, so he ...

This project demonstrates how to control the built-in LED on an Arduino Uno using a Python-based graphical user interface (GUI). The Python script communicates with the Arduino over a serial ...

Recently, we published an entry-level Arduino project with a single seven-segment LED display. Although it’s an amazing DIY project, we noted that most of the readers are looking for more advanced ...

His test circuit uses six 2N2222 transistors to protect the Arduino from excessive current. You can see six red LEDs above which are inline with the base of teach transistor.