Hello! I'm new here, and I'm not sure if I'm asking in the right place. My sister-in-law asked me if it's possible to monitor the usage of the laundromats in her shop. My plan is to create a system where every time the laundromat is used, the information will be saved in a database. This way, my sister-in-law can verify if the daily profits reported by her hired staff are accurate. Is this possible with arduino?
Loosely speaking, yes.
You need to provide quite a bit more information.
What is the interface to the laundry equipment?
Where is the database being stored?
What sort of data / statistics are you looking for ?
What’s your experience with electronics, Arduino and connecting to mains powered equipment.
There are numerous ways to do it. The tricky bit, if your SIL feels that such a system is necessary, is to do it in such a way that it's hard for the employees to game the system.
I'd look at how other laundromat owners solve the problem.
Hi,
Doesn't each machine have an internal counter?
Tom.. 
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