Fortunately, [Jason] has applied his knowledge to build a SI5351 library for the Arduino and a breakout board for the chip. The SI5351 is a programmable clock generator. It can output up to ...

[Tom] used a Teensy 3.1 Arduino compatible ... In addition, the Si5351 will generate three separate clock outputs. [Tom] walks through the code for his VFO and provides it via GitHub.