Magnetic Float Sensor FS37A (Vertical)

Magnetic Float Sensor FS37A (Vertical) Documentation

Overview

The Magnetic Float Sensor FS37A (Vertical) is a binary sensor used to detect the presence or absence of a liquid in a tank or container. The sensor consists of a magnetic float that rises or falls with the liquid level, triggering a reed switch to open or close. This documentation provides a comprehensive guide to using the Magnetic Float Sensor FS37A (Vertical) in various IoT applications.

Pinout and Connections

The Magnetic Float Sensor FS37A (Vertical) has two pins:

VCC (Power Supply): Connect to a 5V power source.
 OUT (Output): Connect to a digital input pin on a microcontroller or development board.

Code Examples

### Example 1: Basic Liquid Level Detection using Arduino Uno

In this example, we will use the Magnetic Float Sensor FS37A (Vertical) to detect the presence of a liquid in a tank and toggle an LED indicator.
```c++
const int sensorPin = 2;  // Connect to OUT pin of the sensor
const int ledPin = 13;   // Connect to an LED indicator

void setup() {
  pinMode(sensorPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int sensorState = digitalRead(sensorPin);
  if (sensorState == HIGH) {
    digitalWrite(ledPin, HIGH); // Liquid detected, turn on LED
  } else {
    digitalWrite(ledPin, LOW); // No liquid, turn off LED
  }
  delay(100);
}
```
### Example 2: Liquid Level Monitoring using Raspberry Pi and Python

In this example, we will use the Magnetic Float Sensor FS37A (Vertical) to monitor the liquid level in a tank and send notifications using Python and the RPi.GPIO library.
```python
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
sensor_pin = 17  # Connect to OUT pin of the sensor
GPIO.setup(sensor_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True:
    sensor_state = GPIO.input(sensor_pin)
    if sensor_state:
        print("Liquid detected!")
        # Send notification using email or messaging service
    else:
        print("No liquid detected.")
    time.sleep(1)
```
### Example 3: IoT Liquid Level Monitoring using ESP8266 and Blynk

In this example, we will use the Magnetic Float Sensor FS37A (Vertical) to monitor the liquid level in a tank and display the status on a Blynk dashboard using an ESP8266 board.
```c++
#include <WiFi.h>
#include <BlynkSimpleESP8266.h>

char auth[] = "Your_Blynk_Token";
char ssid[] = "Your_WiFi_SSID";
char pass[] = "Your_WiFi_Password";

const int sensorPin = D5;  // Connect to OUT pin of the sensor
WidgetLED led(V0);

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  pinMode(sensorPin, INPUT);
}

void loop() {
  int sensorState = digitalRead(sensorPin);
  if (sensorState == HIGH) {
    led.on(); // Liquid detected, turn on LED on Blynk dashboard
  } else {
    led.off(); // No liquid, turn off LED on Blynk dashboard
  }
  Blynk.run();
  delay(100);
}
```
Notes and Precautions

Ensure the sensor is properly calibrated and adjusted to the desired liquid level threshold.
 Use a suitable power supply and voltage regulator to power the sensor and microcontroller/development board.
 Avoid exposing the sensor to harsh environmental conditions, such as extreme temperatures, humidity, or mechanical stress.
 Follow proper safety precautions when working with electrical components and liquids.