liquid level sensor
. Use keys, single chip microcomputer and LED to complete digital input and display. Compare the set water level with the value of the night sensor to get the water level error, and use the amplified signal of this error to control the opening and closing of the solenoid valve! (you can use it.
PID algorithm
) in order to control the water level at the set value.
Population aging is the basic national condition of our country, and the change of population structure brings pressure and challenge to social pension. The follow