Basics

In this example we will create a basic library, a few examples on this site flash LEDs. We will create a library that will contain a couple of functions, we will then use these in our sample sketch. You need…

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

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…

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

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…

The DS18B20 is a  temperature sensor that can be used in various simple projects.  This part uses the 1 wire (I2C) bus and you can connect multiple sensors up to your Arduino. The part is also relatively low cost and only…

The ability to flash an LED is the most basic ‘hello world’ type of program you can write and run on your arduino. Most Arduino’s have an LED attached to D13, rather than take the easy option we will attach…