cdm324_backpack
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Bad output
I made exactly as you did. With the same components, and I get nothing. If I connect fOut to analog pin I can see values from 509 to 512. CMD324 is the radar.
The cdm324 from https://www.limpkin.fr is not well documented.
f.e. I miss:
- breadboard cabeling
- example Arduino sketches (the one from https://github.com/limpkin/cdm324_backpack/tree/master/arduino/freq_counter give no result...)
- detailed information about the capabilities of the onboard connectors (https://www.limpkin.fr/index.php?post/2022/03/31/CDM324-Doppler-Motion-Sensor-Backpack%2C-now-with-FFTs%21) especially this picture https://www.limpkin.fr/public/cdm324_v2/exp_pinout.png
See also: https://github.com/limpkin/cdm324_fft/issues/2
this repository is for a previous version of the cdm324 project.