In this tutorial we will use a LED connected to Arduino UNO and Visuino to make dim the LED using Pulse Width Modulation (PWM) and Ramps component.
Watch a demonstration video.
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Step 1: What You Will Need
- Arduino UNO (or any other Arduino)
- Visuino program: Download Visuino
Step 2: The Circuit
Connect LED negative (short) to Arduino pin (GND)
Connect LED positive (long) to Arduino pin (11)
All you need to do is drag and drop components and Connect them together. Visuino will create the working code for you so you don’t have to waste time on creating the code. It will do all the hard work for you fast and easy! Visuino is perfect for all kind of projects, you can easily build complex projects in no time!
Download the Latest Powerful Visuino Software
Step 4: Start Visuino, and Select the Arduino UNO Board Type
To start programming the Arduino, you will need to have the Arduino IDE installed from here: http://www.arduino.cc/.
Please be aware that there are some critical bugs in Arduino IDE 1.6.6. Make sure that you install 1.6.7 or higher, otherwise this Instructable will not work! If you have not done follow the steps in this Instructable to setup the Arduino IDE to program Arduino UNO! The Visuino: https://www.visuino.eu also needs to be installed. Start Visuino as shown in the first picture Click on the "Tools" button on the Arduino component (Picture 1) in Visuino When the dialog appears, select "Arduino UNO" as shown on Picture 2
Step 5: In Visuino Add Components
- Add "Analog Value" component, set value to "0"
- Add "Ramp to Analog Value" component, set Initial value to "1", set Slope to "0.5"
Step 6: In Visuino Connect Components
- Connect "AnalogValue1" component pin[Out] to RampToValue1 component pin [In]
- Connect "RampToValue1" component to Arduino pin  Analog (PWM)
Step 7: Generate, Compile, and Upload the Arduino Code
In Visuino, Press F9 or click on the button shown on Picture 1 to generate the Arduino code, and open the Arduino IDE
In the Arduino IDE, click on the Upload button, to compile and upload the code (Picture 2)
Step 8: Play
If you power the Arduino UNO module, the LED will first turn ON then slowly turn OFF.
Value "0" in "Analog Value" component determines where is the end of LED brightness, in our case its OFF so "0", to play with it change it to another value.
Congratulations! You have completed your project with Visuino. Also attached is the Visuino project, that I created for this Instructable. You can download and open it in Visuino: https://www.visuino.eu