I did this Pi 4 Roadtest a few years back: /products/roadtest/rv/roadtest_reviews/685/roadtest_the_raspber
I can’t remember now but would guess it took at least 24 hours.
The Pi4 was also a component in the Sound and Vibration Measurement Hat for Raspberry Pi.
I didn't spend too much time reviewing the Pi, but it got used in anger while I focused on the DAQ hat. Using the Pi4 for the 1st time, with the Buster OS, was easy.
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