Fermion MEMS Gas Detection Sensor Ammonia (NH3)

Fermion MEMS Gas Detection Sensor Ammonia (NH3) Documentation

Overview

The Fermion MEMS Gas Detection Sensor Ammonia (NH3) is a highly sensitive and accurate gas sensor designed to detect ammonia (NH3) concentrations in the air. This sensor utilizes Micro-Electro-Mechanical Systems (MEMS) technology to achieve high performance, low power consumption, and compact size.

Technical Specifications

Operating voltage: 3.3V to 5V
 Operating current: 10mA to 20mA
 Sensitivity: 10 ppb to 1000 ppm
 Accuracy: 10% of measured value
 Response time: 10 seconds
 Interface: IC, UART, and Analog output
 Operating temperature: -20C to 50C
 Humidity range: 20% to 80% RH

Code Examples

### Example 1: Interfacing with Arduino Uno using IC

In this example, we will connect the Fermion MEMS Gas Detection Sensor Ammonia (NH3) to an Arduino Uno board using the IC interface.

Hardware Connection

VCC to Arduino Uno's 5V pin
 GND to Arduino Uno's GND pin
 SCL to Arduino Uno's SCL pin (pin 13)
 SDA to Arduino Uno's SDA pin (pin 12)

Software

```c++
#include <Wire.h>

#define FERMION_SENSOR_ADDR 0x1A // IC address of the Fermion sensor

void setup() {
  Serial.begin(9600);
  Wire.begin(); // Initialize IC
}

void loop() {
  int ammoniaconc = readAmmoniaConcentration();
  Serial.print("Ammonia concentration: ");
  Serial.print(ammoniaconc);
  Serial.println(" ppm");
  delay(1000);
}

int readAmmoniaConcentration() {
  Wire.beginTransmission(FERMION_SENSOR_ADDR);
  Wire.write(0x00); // Command to read ammonia concentration
  Wire.endTransmission();
  Wire.requestFrom(FERMION_SENSOR_ADDR, 2);
  int conc_LSB = Wire.read();
  int conc_MSB = Wire.read();
  int ammoniaconc = (conc_MSB << 8) | conc_LSB;
  return ammoniaconc;
}
```

### Example 2: Interfacing with Raspberry Pi using UART

In this example, we will connect the Fermion MEMS Gas Detection Sensor Ammonia (NH3) to a Raspberry Pi using the UART interface.

Hardware Connection

VCC to Raspberry Pi's 3.3V pin
 GND to Raspberry Pi's GND pin
 TX to Raspberry Pi's RX pin (GPIO 15)
 RX to Raspberry Pi's TX pin (GPIO 14)

Software

```python
import serial
import time

# Open the serial connection
ser = serial.Serial('/dev/ttyS0', 9600, timeout=1)

while True:
    # Send the command to read ammonia concentration
    ser.write(b'x01x02')
    response = ser.read(2)
    ammoniaconc = (response[0] << 8) | response[1]
    print(f"Ammonia concentration: {ammoniaconc} ppm")
    time.sleep(1)
```

Note: In this example, we assume that the UART interface is configured to use GPIO 15 as RX and GPIO 14 as TX.

Additional Resources

Datasheet: [Fermion MEMS Gas Detection Sensor Ammonia (NH3) Datasheet](https://example.com/fermion-nh3-datasheet.pdf)
 User Manual: [Fermion MEMS Gas Detection Sensor Ammonia (NH3) User Manual](https://example.com/fermion-nh3-user-manual.pdf)

By following these examples, you can integrate the Fermion MEMS Gas Detection Sensor Ammonia (NH3) into your IoT projects to detect and monitor ammonia concentrations in various environments.