For those of you who program in the world of Visual Basic, it is still easy to control an Arduino or compatible board that's connected via USB for interactive hardware projects and more. This has been demonstrated by Instructables member 100FUBU100 who has published some simple VB code that does just that.
Their example involves controlling RGB LEDs - the app allows the user to pick 8-bit RGB colour values which are then sent to the Arduino which in turn controls the LEDs. The data is sent as text from the PC to the Arduino and confirms how easy this is.
If you're interested in experimenting with RGB LEDs as demonstrated above, we're offering large and bright 8mm diameter RGB LEDs:
They're in the common-anode format and look great when lit up. Ideal for colour-mixing and creating displays of all sorts. For more information and to order, visit the product page.