The VFD was a 16 character, 14 segment display, all controlled via serial input. The main control board is, of course, an Arduino with a WizNet 5100 Ethernet board.

Experts examine the procedure of commissioning, running it up and checking it out, medium-voltage VFDs rated 250 hp (186.4 kW) and larger at a minimum 2.3 kV voltage level. Equipment commissioning is ...

VFDs are available in different colors. VFDs are popular for clocks, ranging from very polished looking ones, to something similar to this one, but with an MSP430.