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BME680 Digital Humidity Temperature Pressure High Altitude Sensor Module

BME680 Digital Humidity Temperature Pressure High Altitude Sensor Module

₹729.00Price

📌 Overview

The BME680 is a powerful 4-in-1 environmental sensor developed by Bosch Sensortec.

👉 It can measure:

  • 🌡️ Temperature

  • 💧 Humidity

  • 🌬️ Atmospheric Pressure

  • 🌫️ Air Quality (VOC gases)

✔ Also used as a high-altitude sensor due to accurate pressure measurement.

🧠 Working Principle

The module integrates multiple sensing technologies:

  • 🌡️ Temperature → Semiconductor sensor

  • 💧 Humidity → Capacitive sensing

  • 🌬️ Pressure → MEMS barometric sensor

  • 🌫️ Gas → Heated metal-oxide sensor (detects VOCs)

👉 It estimates Indoor Air Quality (IAQ) using gas resistance changes

📊 Infographic Summary

┌──────────────────────────────┐
│ 🌍 BME680 SENSOR MODULE │
├──────────────────────────────┤
│ 🌡 Temp: -40°C to 85°C │
│ 💧 Humidity: 0–100% RH │
│ 🌬 Pressure: 300–1100 hPa │
│ 🌫 Gas: VOC detection │
│ ⚡ Voltage: 3.3V–5V │
│ 🔌 Interface: I2C / SPI │
└──────────────────────────────┘

🔌 Pin Configuration

┌────────────────────┐
│ BME680 Module │
├────────────────────┤
│ VCC → 3.3V / 5V
│ GND → Ground
│ SDA → I2C Data
│ SCL → I2C Clock
│ CS → SPI Select
│ SDO → Address select
└────────────────────┘

⚙️ Key Specifications

  • ⚡ Voltage: 3.3V – 5V (module), 1.7–3.6V sensor core

  • 🌡 Temperature Range: -40°C to +85°C

  • 💧 Humidity Range: 0–100% RH (±3%)

  • 🌬 Pressure Range: 300–1100 hPa

  • 📏 Altitude Accuracy: ~±1 meter (derived from pressure)

  • 🌫 IAQ Index: 0–500 (air quality level)

  • 🔌 Interface: I2C / SPI

🌟 Key Features

  • 🌍 4-in-1 environmental sensing

  • 📊 High accuracy and resolution

  • 🔋 Low power consumption

  • 📡 Digital output (easy integration)

  • 🧠 Supports air quality estimation (VOC detection)

  • 📦 Compact MEMS design

🧪 Applications

  • 🌫 Air quality monitoring systems

  • 🏠 Smart home automation

  • 🌦 Weather stations

  • 📱 Wearable devices

  • 🚁 Drones & altitude measurement

  • 🧠 IoT environmental sensing

🔄 How Altitude Measurement Works

  • Pressure decreases as altitude increases

  • Sensor measures pressure → calculates height

👉 Used in:

  • 🏔️ Altimeters

  • 🚁 Drones

  • 📡 GPS enhancement systems

⚠️ Important Notes

  • ⚠️ Gas sensor needs burn-in time (few hours to days) for accuracy

  • ⚠️ IAQ values are relative, not absolute pollution levels

  • ⚠️ Sensitive to temperature changes (self-heating effect)

  • ⚠️ Requires libraries (like BSEC) for best air quality data

💬 From real-world usage (Reddit insight):

“Sensor may need calibration for accurate humidity and AQ values”

🆚 BME680 vs Other Sensors

SensorFeatures
BME280Temp + Humidity + Pressure
BMP280Pressure only
BME680Temp + Humidity + Pressure + Gas (best choice)

💡 Pro Tip

For advanced projects:

  • Use ESP32 + BME680

  • Add WiFi dashboard (IoT)

👉 Build your own smart air quality monitoring system

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