Does power cycling shorten Arduino lifetime

Projects General Guidance
1

How often would you have to cycle the power to an Arduino to have any significant impact on the lifetime of the device?

2

Powercycling does not impact the lifetime of the board ( In the absence of other issues)

3

To the best of my knowledge it shouldn't have any effect ,you are probably concerned about power spikes would be my guess here.

4

ardly:
How often would you have to cycle the power to an Arduino to have any significant impact on the lifetime of the device?

Depends on the environent.

Whilst power cylling on its own should not have a significant impact on lifetime in itself, it could have an impact if as a result of the power cycling the 'Arduino' goes through significant temperature cycling, continuously heating up from very cold for instance.

5

Depends on the environent.

I was thinking switching the Arduino at room temperature might have an effect but most people seem to think it will not or be negligible. I had not considered that the ambient temperature might be quite low, in which case it probably would have an effect.

Does anybody know what the normal running temperature of an Arduino is if the ambient temperature is 20C?
If the Arduino had reached its peak temperature how long would it take to cool to the ambient of 20C?

6

Does anybody know what the normal running temperature of an Arduino is if the ambient temperature is 20C?

No nobody knows that because you supply insufficient information. Not only do you need to know the input voltage the current being sourced by the Arduino to other devices, but you also need to know the thermal coupling between your Arduino and the environment, normally measured in degrees centigrade per watt. Finding that involves a lot of measurement.

If the Arduino had reached its peak temperature how long would it take to cool to the ambient of 20C?

Exactly the same information for the above question. These are things that are so specific to the particular setup that you are simply wasting your time asking.

Anyway what are you going to do with the answer, it has no relevance to your question.