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Description |
The DHT11 is a basic, ultra-low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and outputs a digital signal on the data pin. It’s simple to use but requires careful timing to grab data. It’s perfect for DIY projects, weather stations, and other applications where accurate and reliable temperature and humidity readings are needed.
Key Features:
- Temperature Range: 0-50°C with ±2°C accuracy
- Humidity Range: 20-80% RH with ±5% RH accuracy
- Low Power Consumption: Efficient for battery-operated applications
- Single Wire Digital Interface: Easy to interface with microcontrollers
- Pre-calibrated: No need for additional calibration
- Compact Size: Suitable for compact projects and devices
Technical Specifications:
- Temperature Range: 0-50°C (32-122°F)
- Humidity Range: 20-80% RH
- Temperature Accuracy: ±2°C
- Humidity Accuracy: ±5% RH
- Operating Voltage: 3.3V to 5.5V
- Max Current: 2.5mA
- Output: Digital signal via 1-wire protocol
- Dimensions: 15.5mm x 12mm x 5.5mm
Applications:
- Weather Stations: Monitor and log temperature and humidity levels.
- Home Automation: Control HVAC systems based on environmental conditions.
- Greenhouses: Maintain optimal growing conditions for plants.
- DIY Projects: Perfect for hobbyists building custom sensors and gadgets.
- Data Loggers: Record environmental data over time for analysis.
- Educational Projects: Teach students about sensors and data acquisition.
Usage:
- Wiring: Connect the VCC pin to 3.3V or 5V, GND to ground, and the DATA pin to a digital input on your microcontroller.
- Library Integration: Use libraries available for platforms like Arduino or Raspberry Pi to simplify reading data from the sensor.
- Coding: Write code to initialize the sensor and read temperature and humidity data.
- Data Processing: Process and use the sensor data in your application as needed, such as displaying it on an LCD or sending it to a web server.
Caution:
- Power Supply: Ensure the sensor is supplied with the correct voltage to avoid damage.
- Environmental Conditions: Keep the sensor in a dust-free, non-condensing environment for accurate readings.
- Wiring Length: Minimize the length of wiring between the sensor and the microcontroller to maintain signal integrity.
Datasheet:
For detailed technical specifications, refer to the DHT11 Datasheet.
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The BMP180 is a high-precision digital barometer and altitude sensor from Bosch, designed to measure atmospheric pressure and temperature. It is commonly used in applications requiring accurate altitude measurement and weather monitoring. The BMP180 provides reliable data for various applications including GPS, weather stations, and altitude tracking in wearable devices.
Key Features:
- Accurate barometric pressure and temperature measurement
- Digital interface with I²C or SPI communication
- High resolution with 0.03 hPa pressure measurement accuracy
- Compact and low-power design
- Built-in calibration for precise readings
- Wide operating temperature range
Technical Specifications:
- Sensor Type: Barometric Pressure and Temperature Sensor
- Communication Protocol: I²C (default), SPI (optional)
- Pressure Range: 300 hPa to 1100 hPa
- Pressure Accuracy: ±1 hPa (typical)
- Temperature Range: -40°C to +85°C
- Temperature Accuracy: ±1°C
- Resolution: 0.03 hPa for pressure
- Operating Voltage: 1.8V to 3.6V
- Current Consumption: 3µA (typical in sleep mode), 10µA (typical in measurement mode)
- Package Type: LGA-8 (Leadless Grid Array)
Applications:
- Altitude and weather tracking
- GPS altitude calibration
- Pressure-based data logging
- Environmental monitoring
- Wearable devices and consumer electronics
Usage:
- Connect the BMP180 sensor to your microcontroller or development board using I²C or SPI interface.
- Power the sensor with a voltage within the operating range (1.8V to 3.6V).
- Use the appropriate library or driver for the I²C or SPI protocol to interface with the sensor.
- Retrieve and process pressure and temperature data according to your application needs.
Caution:
- Ensure proper voltage supply to avoid damage to the sensor.
- Handle the sensor carefully to prevent mechanical damage or contamination.
- Verify correct wiring and communication protocol settings for accurate readings.
Datasheet:
For detailed technical specifications, refer to the BMP180 Datasheet.
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The SD Card Module is a compact and efficient solution for adding storage capabilities to your microcontroller or development board projects. It allows you to read from and write to SD cards, making it ideal for data logging, file storage, and other applications requiring large amounts of memory. The module supports various SD card formats and interfaces seamlessly with popular microcontrollers like Arduino, Raspberry Pi, and others.
Key Features:
- Storage: Supports SD, SDHC, and MicroSD (with adapter) cards
- Interface: SPI interface for easy integration
- Voltage Compatibility: Operates at 3.3V and 5V
- Onboard 3.3V Regulator: Ensures stable operation
- Card Detection: Built-in card detection switch
- Compact Design: Small footprint for easy incorporation into projects
- File System: Compatible with FAT16 and FAT32 file systems
Technical Specifications:
- Supported Cards: SD, SDHC, MicroSD (with adapter)
- Operating Voltage: 3.3V/5V
- Interface: SPI
- Current Consumption: < 100mA
- File System: FAT16, FAT32
- Dimensions: 42mm x 24mm x 12mm
Applications:
- Data Logging: Store sensor data and logs in embedded systems.
- File Storage: Save files for multimedia applications and projects.
- Firmware Updates: Load new firmware from the SD card for microcontrollers.
- DIY Projects: Perfect for hobbyists needing additional storage.
- Educational Projects: Commonly used in learning modules for data storage and retrieval.
Usage:
- Wiring: Connect the SD card module to your microcontroller using the SPI interface (CS, MOSI, MISO, SCK, VCC, GND).
- Power Supply: Ensure the module is powered with 3.3V or 5V, as required.
- Card Insertion: Insert a formatted SD card into the module.
- Programming: Use libraries (e.g., SD library for Arduino) to initialize the SD card and read/write data.
- Data Handling: Store or retrieve data files from the SD card as needed by your application.
Caution:
- Voltage Levels: Ensure proper voltage levels to avoid damaging the module.
- Handling SD Cards: Handle SD cards with care to prevent data loss or corruption.
Datasheet:
For detailed technical specifications, refer to the SD Card Module Datasheet.
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The PIR (Passive Infrared) Motion Sensor is a reliable and efficient sensor used to detect motion by measuring changes in infrared radiation levels emitted by surrounding objects. It is widely used in security systems, automatic lighting controls, and other applications requiring motion detection. The sensor is designed to detect human movement and can trigger alarms, lights, or other systems in response to detected motion.
Key Features:
- Type: Passive Infrared (PIR) motion sensor
- Detection Range: Up to 7 meters
- Detection Angle: 120 degrees
- Output: Digital high/low signal
- Operating Voltage: 5V to 20V
- Adjustable Sensitivity: Allows customization of detection range
- Adjustable Time Delay: Configurable delay before resetting
- Compact Design: Small and easy to integrate into various systems
Technical Specifications:
- Operating Voltage: 5V to 20V
- Current Consumption: < 60µA
- Output Type: Digital (high/low)
- Detection Range: Up to 7 meters
- Detection Angle: 120 degrees
- Trigger Time: Adjustable from 5 seconds to 5 minutes
- Operating Temperature Range: -20°C to +50°C
- Dimensions: 32mm x 24mm
Applications:
- Security Systems: Use in burglar alarms and surveillance systems.
- Automatic Lighting: Control lights in homes, offices, and public spaces.
- Energy Saving: Automate lighting and devices to save energy.
- Consumer Electronics: Motion-activated gadgets and appliances.
- Industrial Automation: Detect movement in industrial processes and machinery.
Usage:
- Installation: Mount the PIR sensor at the desired location, ensuring a clear line of sight for detection.
- Power Supply: Connect the sensor to a power source within the operating voltage range.
- Output Connection: Connect the output pin to the desired control circuit or microcontroller.
- Adjustment: Use the sensitivity and time delay adjustments to fine-tune the sensor’s performance.
Caution:
- Environmental Factors: Avoid placing the sensor near heat sources or in direct sunlight to prevent false triggering.
- Proper Wiring: Ensure correct wiring to avoid damage to the sensor and connected devices.
Datasheet:
For detailed technical specifications, refer to the PIR Motion Sensor Datasheet.
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