An Arduino Due forms the heart of the project, controlling a TEA5767 module, an SH1106 128×64 pixel OLED display and a rotary encoder. The sound signal is passed through an LM4811 headphone ...

So it is no surprise that hams like [jmharvey] will build an antenna analyzer from a DDS module and an Arduino ... another version of the Arduino code that drives an OLED screen, although you ...