This was a quick test for a multi color LED. Pins 2, 3 and 4 were used   [c] int red = 2; int green =3; int blue =4; int j; void setup() { pinMode(red,OUTPUT); pinMode(green,OUTPUT); pinMode(blue,OUTPUT); } void loop() …

random LEDs on using the LOLShield and an Arduino   Switch LEDS off and on by column [c] #include <Charliplexing.h> void setup() { LedSign::Init(); // initializes the screen } void loop() { for (int x=0; x<14; x++) { for (int …

The LoL Shield is a charlieplexed LED matrix for the Arduino. The LEDs are individually addressable, so you can use it to display anything in a 9×14 grid. Scroll text, play games, display images, or anything else you want to …

The Colour LCD Shield provides an easy method of connecting the popular Nokia 6100 LCD to your Arduino. The board comes as shown with the 128×128 mini colour LCD, as well as a backlight driver circuit (boosts to 7V), and three momentary push-buttons (tied …

This example shows how to connect a joystick to your Arduino. This could be used for games or perhaps navigating through a menu for example. This is a basic analog 2-axis joystick which has two 10K ohm pots for vertical and …

In this example we connect a photoresistor to an Arduino, the value read from the photoresistor corresponds to the amount of light present. The photoresistor is connected to analog pin 0 in this example. A photoresistor (or light-dependent resistor, LDR, or photo-conductive cell) is a …

An RGB led is a combination of a Red, Green and Blue LED’s in one package, they can be common cathode or common anode types In the example I used an RGB LED breakout. The LED was wired up as …

Another simple example is to hook up a speaker to your Arduino.   Schematic Layout     Code A simple example.   [c] int pin = 8; int note = 988; void setup() { } void loop() { //3 dots …

In this example we will show a basic example of connecting a DHT11 Temperature and Humidity Sensor to your Arduino. This is a very nice little, low cost sensor which requires only a pull up resistor to VDD. This can …

In this example we will connect a Piezo buzzer to our arduino and play some basic sounds, this uses the PWM functionality of the Arduino. A piezoelectric element may be driven by an oscillating electronic circuit or other audio signal …

The touch sensor is connected to D3 and we attach an LED to D13   Code [c] #define TOUCH_SENSOR 3 //the touch sensor is connected to D3 int led = 13; // pin for the LED void setup() { pinMode(led, …

In a previous example we showed you a basic usage of a DS18B20 which outputted the temperature to the Serial output. A simple addition to the code can show a practical example, in this case if the temperature exceeds a …