Basics

This DS18B20 example we output the temperature to our LCD display. The LCD display we use is the LCD Keypad Shield that is available for sale from various sources. Here is the temperature displayed on the LCD, as you can …

The circuit shown here uses a NPN transistor connected to a an Arduino output pin to switch an LED pin. In real life you would perhaps switch a relay, lamp , fan or a buzzer. A darlington transistor could be …

A reed switch is a small device that when the device is exposed to a magnetic field, the two materials inside the switch pull together and the switch closes. When the magnetic field is removed, the two materials then separate …

This example shows how to interface a basic touch sensor to our arduino, this sensor came as part of a kit of 37 sensors. Touching the metal sensor pin produces an output at the ‘DO’ pin. The output is not …

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() …

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 …

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 …