the Arduino nano does it, and a dozen other boards do it. [Alex] and [Alexey] aren’t content with just a simple microcontroller breakout board so they’re adding a radio, an OLED, an SD card ...

[DuWayne] made a 63 dB step attenuator by putting two smaller units in series, with an Arduino Nano in control ... [DuWayne] used are essentially breakout boards for the PE4302 digital RF ...