September 15, 2017 Frank from The VFD Collective Guides & Tutorials, Articles The VFD Clock Software September 15, 2017 Frank from The VFD Collective Guides & Tutorials, Articles OpenVFD incorporates a full Arduino® Uno® compatible platform and is built upon the Arduino® environment. The code is written in Arduino® C for everyone to understand, to take apart and to participate.We show you how the OpenVFD software works!