Stock, this radio module is just okay, but with a few modifications, it can be turned into a very good receiver with a spectrum analyzer and ... and by adding a simple Arduino, the complete ...

For the hardware side of the spectrum analyzer, [Ariel] equipped an Arduino Nano with an ADXL335 accelerometer, which is able to pick up vibrations within a frequency range of 0 to 1600 Hz on the ...

Spectrum Analyzer modes: Peak Max ... however we will offer a fully open Arduino compatible internal expansion module so you can complement, extend or even override original firmware with your ...