This is a little modification of our DS18B20 example, outputting via the serial monitor is great but of little practical use. In this example we will output the temperature to…

The motor driver board contained a ULN2003 This is mainly one of the default examples that comes with the stepper library Code #include <Stepper.h> const int stepsPerRevolution = 512; //…

The circuit shown here uses a NPN transistor connected to a an Arduino output pin to switch an LED pin, obviously this is just an example. In real life you…

User submitted example for a HC-SR04 Ultrasonic Sensor   #define echoPin 7 // Echo Pin #define trigPin 8 // Trigger Pin long duration, distance; // Duration used to calculate distance…

This code example switches on all the LEDS on a 8×8 LED matrix, this is controlled by a MAX7219 You will need the Led Control library #include “LedControl.h” /* Max7219_pinCLK…

When you are looking for low cost sensors to begin experimenting with then a PIR is a nice low cost option. In the following example we will demonstrate the HC-SR501 PIR sensor,…

This example shows how to drive a seven segment display, this is the most basic example in which we use various digital pins as outputs, 7 in this case. In…

Connect an LED to digital pin 3 void setup() { pinMode(3, OUTPUT); } void loop() { for (int a = 0 ; a < 256 ; a++) { analogWrite(3, a);…

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…

In a sensor pack we recieved recently there were a large amount of sensors but little documentation. One of the sensors that caught our attention was a touch sensor. These…