Summary: A 25kHz PWM signal (5VDC peak Vpp), using a simple RC low-pass filter, needs to be converted to an analog voltage to be measured using an Arduino MEGA 2560. The filter (with a cutoff frequency of ~25Hz) is assembled on a breadboard with component values of C = 2000uF and R = 3.24Ohms). The …

25kHz PWM signal to analog voltage (DC) using low-pass filter: Weird output

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