Second iteration - Going into business

The coffee machine is not free anymore! One tea is 0,4 euro, a coffee is 0,6 euro, a chocolate is 0,5 euro.

The drink maker will now only make a drink if enough money is given for it

Use cases


Remember that the drink maker forwards any message received onto the coffee machine interface for the customer to see.

If too much money is given, the drink maker will still make the drink according to the instructions. The machine will handle the return of the correct change. So do not worry about that.

You don't need to worry if there is too much money inserted. Just make sure, the minimum amount of money is set.