The bar graph is basically a series of LEDs in a line, this is a common hardware display for analog sensors. It’s made up of a series of LEDs in a row, you simply treat these as you would do …

This is just another simple app to control an RGB led, this time the app is a color picker Schematic Arduino Code [codesyntax lang=”cpp”] const int RED_LED = 9; const int GREEN_LED = 10; const int BLUE_LED = 11; void …

This example was just a modification our LM35 sensor example at http://www.arduinolearning.com/code/lm35-temperature-sensor.php. This time we will create an app to read the value sent rather than using the serial monitor. Arduino Code Slight change in that we removed some of the …

In this example we will connect an RGB LED to our Arduino and control it via a C# winforms app that will send commands down to the Arduino via the com port. In this example we keep the commands very …

In this simple project we will create a simple morse code flasher, you will use the serial monitor to type in a message and this will then be flashed in morse code on an LED. If you wish to learn …

In this example we will connect an LM35 temperature sensor to our Arduino The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus has an advantage over linear …

On one of my recent visits to an electronics website I saw this voltage sensor, intrigued I bought it and wondered how it worked, there didn’t seem much to it. As an Arduino is limited to 5v maximum on its …

The Pulse Sensor Amped is a a plug-and-play heart-rate sensor for Arduino and Arduino compatibles. It can be used by people who want to easily incorporate live heart-rate data into their projects. You gently place the sensor on any area …

In this example we will connect an L298 to our Arduino and drive a motor. A switch will change the direction of the motor The L298 is an integrated monolithic circuit in a 15-lead Multiwatt and PowerSO20 packages. It is …

I have a few examples of interfacing a PC to an Arduino over the com port, typically you use a program written in a language such as VB.net or C# and either send or recieve data back and forth. One …

In this example we fit the Digit shield to our Arduino Uno and then connect the HC-SR04 ultrasonic module as per the previous example You can read about the digit shield here   Requirements HC-SR04 Ultrasonic module Arduino Uno and USB cable …

This was a module that I bought called the SPI RGB 5V 4xSMD 5050 LED Light Module for Arduino. Sadly I could not find a great deal of information for it but eventually got it to work. Looking at the …