Use your PC Soundcard as an Oscilloscope, a Signal Generator, and a Spectrum Analyzer (Arta, REW)

Oscilloscopes and signal generators are handy tools in our labs. Unfortunately, they are not cheap. What if you had such devices already and did not know?
All newer PCs have loudspeakers and a microphone. So they can create sound as well as record it. And usually in decent quality. Like oscilloscopes and signal generators! We only need a connection and software to create the desired waveforms and visualize the measured voltages. Fortunately, such software is available. And the best: We can use it free of charge!
I am a proud Patreon of @GreatScott!, @ElectroBOOM , @Electronoobs , @EEVblog , and others.

6.3mm jacks: https://s.click.aliexpress.com/e/_AMkazC
3.5mm jacks: https://s.click.aliexpress.com/e/_A534ES
26AWG shielded cable: https://s.click.aliexpress.com/e/_9xlU3c
Screw terminals: https://s.click.aliexpress.com/e/_9yTvmW
Prototype PCB: https://s.click.aliexpress.com/e/_Abfqzg
Power Op-Amp: https://s.click.aliexpress.com/e/_ANmdtc
Cheap sound card: https://s.click.aliexpress.com/e/_98MB8i or https://amzn.to/3q5nLKe or https://bit.ly/34naYue
Reference microphone: https://amzn.to/3F7KFVL
Focusrite Scarlett: https://amzn.to/3HPgsg2
Powerstation Kickstarter: https://www.kickstarter.com/projects/wissa/mini-power-station

Good audio video (German): https://youtu.be/-81GDvqCoqE
Good audio video (English): https://youtu.be/Gc3l40Hge2Y?t=241

REW Software: https://www.roomeqwizard.com/
Arta Software: https://artalabs.hr/
Arta Box (German): https://www.artalabs.hr/AppNotes/AN1_SwitchBox-Rev05Ger.pdf
Arta Box (English): https://www.artalabs.hr/AppNotes/AN1-MeasuringBox-Ver2-Rev2Eng.pdf
How good is your oscilloscope: http://www.unitest.com/pdf/How-Good-is-your-Oscilloscope.pdf

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Supporting Material and Blog Page: http://www.sensorsiot.org
Github: https://www.github.com/sensorsiot
My Patreon Page: https://www.patreon.com/AndreasSpiess
Discord: https://discord.gg/JfgDSa8
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