Good evening. I would like to know how to calculate Mean Time Between Failures = MTBF = Time between two consecutive failures of a component for Arduino + led + PIR sensor + switch button + resistor or if someone can help me.

Do you have the needed MTBF for each of the individual components? Overview of definitions and typical calculations.

Just offer a warranty period :wink: .

To calculate MTBF , divide the total number of operational hours in a period by the number of failures that occurred in that period. MTBF is usually measured in hours. For example, an asset may have been operational for 1,000 hours in a year. Over the course of that year, that asset broke down eight…

Then you need to match the MTBF for the component with the worst failure rate. Paul

Honestly, I don't know how to do this.

Start with the active components in your project. They will have the worst MTBF. Data sheets or other documents should give you a number. You do know how to make a list, and pick the lowest number. Paul

[image] bogdanm98: Honestly, I don't know how to do this. That is not good. Can you tell us why you need this? I suspect you need something simple. Companies that have a reputation of high reliability spend quite a lot of time and resources to investigate this. e.g., reading data sheets, p…

Ex-Reliability Engineer, here! What you've asked is more complicated than you might first think. I'm going to simplify it by making some assumptions you don't need to worry about. To work out the MTBF for a system, you first need to know the MTBF for each component. This involves Google searches…

Hi, Is this a school/college/university project? Thanks.. Tom... :smiley: :+1: :coffee: :australia:

Calculated MTBF Mean Time Between Failures

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bogdanm98 June 23, 2021, 8:43pm 5

No, I need to do some sort of reliability calculation for the components in my project.

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Calculated MTBF Mean Time Between Failures

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