With this project you can measure a frequency from less than 1 Hz to about 6.4 MHz, with atomic clock accuracy (fclk_I_O / 2.5 according to the datasheet, which is 16 MHz / 2.5 = 6.4 MHz, but 7.5 MHz ...

Navigation system with 8" colour touchscreen with proximity sensor, 3D Map display, DAB, AM/FM Radio, 3 USB, Aux-in, 8 speakers, SD card Steering wheel mounted audio/telephone controls WLTP - CO2 ...