What is the Optimal Electrode Shape for Non-Contact Water Level Sensors in a Coffee Machine?
I am trying to design an automatic water filling system for my coffee machine. I need to design and make two non-contact non-immersion level sensors for the water tank. Ideally these should use electrodes on a thin printed circuit mounted just behind the tank. It needs to detect two levels:
A low level "turn the water on" sensor
A high level "turn the water off" sensor
What is the best shape to make these electrodes?
where green is ground, red is live. Or something else.
I have not determined what circuit to use for the detector yet. I have a schematic for a RC oscillator design. But if you have a better idea, please describe.
A low level "turn the water on" sensor
A high level "turn the water off" sensor
What is the best shape to make these electrodes?
where green is ground, red is live. Or something else.
I have not determined what circuit to use for the detector yet. I have a schematic for a RC oscillator design. But if you have a better idea, please describe.
