I had a thought today about how to make sure my coffee machine is off when it’s empty.
I think I have found the solution, FSR.
My coffee machine stands on three “legs”.
Is it advantage to have FSR’s on each leg?
I’m thinking of using a WeMos D1 and esphome with the resistance sensor.
My plan is to sense when the pressure is low, meaning little or no coffee in the machine for 2 minutes and then turn off the Sonoff that is built in to the coffee machine (this will also cut the power to the WeMos).
The FSR’s are not expensive, but each FSR cost as much as an WeMos here (~$10).
But as said, is there an advantage with two or three is series or on different pins?
I have never used FSR that is why I’m hoping someone with experience can share their thoughts.