Si5351 Arduino Controlled GPS Corrected VFO (QEX July/August 2015) A VFO that provides 1 to 112.5 MHz signals on two independent outputs. Use it as a stand alone unit or with a GPS receiver to improve frequency accuracy. UTC and six digit grid square locations are also displayed in the GPS Mode
Sketch Si5351_vfo_v5_3c-I2C.ino contributed by K7ILO provides I2C control of the display.