ESP32 Flow Sensor Project

This project demonstrates how to interface a flow sensor with an ESP32 microcontroller to measure flow rates. Flow sensors are essential in applications where monitoring liquid flow is crucial, such as in water management systems, industrial equipment, and environmental monitoring.

Components Needed

• ESP32 Microcontroller
• Flow Sensor
• Jumper Wires
• Breadboard

Circuit Setup

1.Connecting the Flow Sensor to ESP32:

Connect the digital output pin of the flow sensor to GPIO pin 18 on the ESP32.

Ensure a stable power supply and common ground (GND) connection between the ESP32 and the flow sensor.

Instructions

1.setup:

Initialize serial communication at a baud rate of 115200 using Serial.begin().

Configure the flow sensor pin as an input with internal pull-up resistor using pinMode().

2.operation:

Define an interrupt service routine (pulseCounter()) to count pulses from the flow sensor. This routine increments pulseCount each time a pulse is detected.

In the loop() function:

• Calculate the flow rate in liters per minute based on the accumulated pulse count and a calibration factor.
• Print the calculated flow rate to the Serial Monitor every second.

3.considerations:

Calibration Factor: Adjust the calibrationFactor based on your specific flow sensor's calibration to ensure accurate flow rate measurements.

Interrupt Handling: Use interrupts (attachInterrupt() and detachInterrupt()) to accurately count pulses without missing any transitions.

Power Requirements: Ensure the ESP32 and flow sensor are powered adequately to maintain reliable operation.

Applications

Water Management Systems: Monitor water flow in irrigation systems, water meters, and plumbing systems.

Industrial Equipment: Measure flow rates in manufacturing processes and equipment.

Environmental Monitoring: Monitor flow rates in environmental monitoring stations and research projects.

Notes

Flow Sensor Output: The flow sensor provides digital pulses that can be counted to determine flow rate.

Real-Time Monitoring: Continuous monitoring of flow rates allows for timely adjustments and interventions based on the measured data.