I am new to to arduino but i have a project where i need to be able to timestamp when 3 independent circuits are broken.
First i need the help to get the correct components to start the experiment.
Functionality:
The idea in the end is that the unit should be able to run on battery with minimum 1 year of uptime meaning low power consumption required.
The second requirement is that as soon as the circuit is broken it will timestamp that moment.
It need to be 3 different circuits. in the end i want to capture at what interval the circuits broke.
for example. first circuit broke 2023-07-06 second 2023-08-15 and third 2023-12-17.
Third: Somehow be able to wirelessly send the information or collect it using NFC or similar.
You need to tell us more about how you are going to identify if the circuits are broken or not!
Also, do you have a Wi-Fi connection near the place where it's going to be placed?
Do you need the time when it brokes or just the interval?
Is it going to be accessible when running? Or not? (I mean, why you want to retrieve the data wirelessly?)
To clarify. I am thinking a wire from control unit in a loop back to same control unit with a low voltage current and if broken add a time stamp when that happens.
Use relays in the circuit to be monitored , drop out when power is lost .
The contacts are fully isolated so it’s a quick and easy route .
You need a real time clock .
I’d work through that bit and also look at low power techniques , using you relay contacts to wake up the processor .
That should keep you occupied for a while .
Then look at the other parts .
Battery won’t be easy as a lot will self discharge over a year Or if lithium will need a proper charger .
