Si5351A based Frequency Generator. The range is from 1 to 160 MHz . Works with Arduino Uno, Nano and bare bones ATmega328P-PU chip.
Updated version.
Full project article is kindly hosted by fellow Radio Amateur Makis, SV1AFN at https://www.sv1afn.com/en/rf-signal-generator-vfo/si5351a-clock-generator-module.html !
New version with OLED 128x64 to follow soon.