Arduino Nano Every V_in Stability

Are there any limits to the Nano Every DC-DC converter in terms of the stability of the power supply?

I am looking to power an Arduino from an automotive electrical system, and the power is not smooth like it would be from a bench power supply. I can incorporate some sort of smoothing circuit if need be.

Thanks.

.txt of typical voltage values against time attached

vbatt.txt (488 KB)

https://www.google.com/search?q=+automotive+electrical+system+filter+noise

https://product.tdk.com/info/en/products/emc/emc/3tf/technote/solution/3tf01/index_mytdk.html

https://incompliancemag.com/article/noise-mitigation-analysis-of-a-filter-for-an-automotive-control-module/

What you are seeing on the scope display is alternator hash, your system is relative clean. Expect battery to range from about 6.5 to 24 volts. Load dump spikes of + or - 80 Volts depending on make and model of vehicle. You have a lot of work ahead of you. Your statement: "I can incorporate some sort of smoothing circuit if need be." indicates you have no experience in automotive systems. For starters try this link: https://www.sae.org/binaries/content/assets/cm/content/standards/p90475.pdf
That will give you an idea of what the requirements are and what you are against with your design. Then Get the Arduino cookbook by Michael Margolis and read it. You will find on line many videos etc showing the Arduino and how to do use it some of it may be what you want. This additional information will go a long way in getting your problem solved. There are also many videos showing how to read a data sheet. Once you get past this you then need to select your sensors and actuators. At that point you could start on the hardware design and write your software.