Smart Temperature Logger with Humidity and BLE Connectivity
Product / Demo information:
• The Smart Temperature and Humidity logger featuring the nRF52832 Development Kit paired with the Neevee Accessory Shield.
• It is ideal for smart homes and offices, enabling users to monitor ambient temperature conditions for comfort and energy efficiency.
• Integrates the precision Si7006 temperature sensor via the Neevee Accessory Shield for accurate environmental data capture.
• The 1.9-inch E-paper display uses Microencapsulated Electrophoretic Display (MED) technology and serves as the screen for showcasing temperature and humidity values.
• Ensures clear and real-time visualization of temperature values.
Applications:
• The integrated system described above, consisting of the nRF52832 Development Kit, NEEVEE Accessory Shield, Si7006 temperature sensor, and 1.9-inch E-paper display, has a broad range ofapplications, including:
1. Smart Home Automation.
2. Industrial IoT.
3. Scientific Research.
4. Healthcare Facilities.
5. Smart Agriculture etc...
High level components:
• nRF52832 Development Kit: nRF52832 Development Kit: A versatile System-on-Chip (SoC) with powerful processing capabilities, serving as the core component for various applications. It provides essential features for development and testing, prioritizing efficiency and performance. Supported by a rich ecosystem, it offers a wide range of resources for developers to create innovative solutions.
• Si7006 Sensor: Known for its accurate temperature and humidity measurements, this sensor communicates efficiently with the nRF52832 using a digital I2C interface. Its small size and energy-efficient design make it suitable for use in different devices and environments.
• E-Paper Display: Using Microencapsulated Electrophoretic Display (MED) technology, this screen provides high-contrast visuals and saves energy. With a compact size of 1.9 inches and a wide 180-degree viewing angle, it ensures clear visibility in various lighting conditions. Connected to the nRF52832 through the I2C protocol, it receives real-time updates, and its small size makes it easy to carry for space-limited applications. Interfacing information nRF52832 & Si7006:
• Communication Protocol: The nRF52832 communicates with the Si7006 sensor using the I2C protocol, a common way for microcontrollers to connect with peripheral devices.
• Unique Addressing: Each Si7006 sensor has a unique I2C address, allowing the nRF52832 to
communicate with it without conflicts, even when multiple devices share the same I2C bus.
• Read and Write Operations: The nRF52832 can both read from and write to the Si7006 sensor over the I2C bus. To obtain sensor data, the nRF52832 sends a read command, and the Si7006 responds with the requested information.
• Efficient Data Retrieval: Acting as the master device, the nRF52832 efficiently fetches temperature and humidity data from the Si7006 sensor via I2C communication. This data can then be processed and used for display or transmission purposes. E-Ink Display Integration with nRF52832
through NEEVEE Peripheral Shield:
• Communication Setup: The nRF52832 establishes communication with the E-Ink display using the I2C protocol, configuring parameters for two-way data exchange.
• Display Controller Interpretation: The E-Ink display has a built-in controller that interprets commands and data from the nRF52832. This communication protocol is optimized for compatibility with the display controller, ensuring smooth updates.
• Data Transfer: The nRF52832 interacts with the display buffer of the E-Ink display, sending relevant data for visualizing temperature and humidity values. This process involves coordinating data transfer to specific memory locations.
• Power Management: The nRF52832 manages power consumption of the E-Ink display by coordinating low-power modes when the display is not actively updating. This optimization enhances overall energy efficiency.
• Addressing: Each E-Ink display connected to the nRF52832 is assigned a unique I2C address. This allows the microcontroller to differentiate between multiple displays on the same bus, supporting the integration of various peripherals.
Functional Demo:
• They communicate smoothly using a protocol called I2C, ensuring they exchange data effectively.
• The nRF52832 chip understands the data from the sensor, picking out the exact temperature and humidity levels.
• After some processing to make sure the values are accurate, the data is sent to a 1.9-inch E-paper display.
• The nRF52832 chip then talks to the E-Ink display, updating it with the latest data for us to see.
• It’s smart about when it updates the display to save power while still keeping things up to date.
• The display presents the temperature and humidity in a clear and easy-to-understand manner.
• Users can keep an eye on the current conditions on the display.
• Additionally, the nRF52832 chip can share this data with other devices using Bluetooth, so we can check it remotely or integrate it with other systems.
