Mcu32
Member

OOh, next time i have to quote the whole article? ehh, no , sorry. Yes, the article mentions - in contrast to you - a duty cycle EOD.

Plus, is not from me.

Just listen. You are a new user. Your question does not indicate how much experience you have. There are beginners (as in every forum) who have never heard of a lowpass. And your question reads like this. And no,...

Correct, great. Does not matter here.. but a zero is a zero. Correct, great. Eh. Not great. SensorPin has a value, which you can find in this thread. Correct, great. Correct, great. Let me extend this:...

LOL ....... :-) Your answer has absolutely nothing to do with "if (analogRead(sensorPin == LOW)) { ..." Then: What's the difference of a digital zero and a analog zero? Hm.... Must be something new? ;-) . ...

Or just use serial.

A true square wave (you did not mention any duty cycle) is : (surprise) fixed square. 50%. An ADC has an integrator, with parameters that are good for it's intended sampling frequency, not your square wave. A low...

Google "capacitor" + "low pass filtering". -> No microcontroller required.

And the audio funcionality could better(+with better audio quality) be done with an ordinary usb-audio stick.

Serial.print(LOW). Logic says, it should be zero. But try yourself.

Yes, it's possible. You can use the Audio-Lib for input, upsample + filter with CMSIS, and add a modified I2S output. Note for the Audio-Lib you'll need an additional input or output which provides the timing for usb. ...

It reads from PIN 0.