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How does a flow sensor work with Arduino Uno?
In this tutorial we will be hooking up a Flow Sensor to an Arduino Uno to measure liquid flow. This type of flow sensor is designed to measure the volume of liquid traveling past a given point, a great way to keep tabs on how much water your drip irrigation system is using, or any other project were the flow of liquid needs to be tracked.
How does an Arduino connect to a Raspberry Pi?
Connect the two LEDs and PIR sensor to the Arduino, as shown in the circuit diagram. Once you’ve wired up the Arduino to the circuit, attach it to one of the Pi’s USB ports. This provides power to the Arduino, as well as a data connection between your Raspberry Pi and the Arduino board.
How does Arduino work with water level sensor?
Now Arduino prints the message “WATER LEVEL – LOW” and turns LED off. When water level reaches sensor level “buttonState” sensor output goes low and Arduino prints the message “WATER LEVEL – HIGH” message in serial monitor and simultaneously LED glows. The program repeats reading the button state with a delay of 1 second.
Is the Arduino Uno pin 2 the same as the interrupt 0?
So that last little bit may require a little more explanation: The first thing we should be clear about is on the Arduino Uno pin 2 is Interrupt 0, so both lines of code we have added are referring to the same physical pin on the Arduino. Basically the pin needs to be set as an input before setting up the interrupt.
When to turn on water pump on Arduino Uno?
If the soil is dry than soil moisture sensor senses high moisture level of soil and if the soil is wet than soil moisture sensor senses low moisture level of the soil. If the light dependent resistor senses value greater than the threshold value than the pump should be switch on only when soil moisture sensor senses high moisture in the soil.
How does a relay work on an Arduino Uno?
“Relay” is electromechanically or electrically operated switch which is operated by a relatively small amount of electric current which can control the switching activity of the large electric current operating devices. Arduino Uno is not able to control high value of voltage and current.
How to calculate the flow rate with Arduino?
We know that this sensor will output a pulse to Arduino pin 2 every time the flapper rotates and every and that every rotation means 2.25mL of fluid has passed the sensor so calculating the flow rate is really just a matter of counting the revolutions per minute and multiplying by 2.25mL . So, what is the best way to count RPM with an Arduino?