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Note: Gravity: BLE sensor beacons need to be configured using the 3.3V USB-TTL tool. This Gravity wireless BLE Sensor Beacon with built-in 11-bit ADC is ...

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Note: Gravity: BLE sensor beacons need to be configured using the 3.3V USB-TTL tool.

This Gravity wireless BLE Sensor Beacon with built-in 11-bit ADC is capable of collecting data from digital and analog sensors and broadcasting via Bluetooth. And users can access the sensor data within broadcasting range on a Bluetooth-equipped device like a smartphone, ESP32, etc.

Integrated with low-power BLE 5.3 technology, the BLE sensor beacon supports both LE and private-protocol broadcasting, and its data format works well with iBeacon, Eddystone, and other mainstream protocols. Besides, users can configure data format, broadcast content, and time intervals on a graphical interface as per their needs.

After configuration, it will run as a Bluetooth beacon when powered on, and collect and broadcast data automatically according to the settings. These sensor beacons can be used IoT sensor nodes for data collection in many scenarios such as smart farms, offices, factories, and warehouses.

Pinout


Features
  • Bluetooth Low Energy 5.3 Compliant

  • Applications
  • IoT Application
  • Smart farms
  • Smart offices
  • Smart factories
  • Smart warehouses

  • Specification
  • Operating Voltage: 3.3-5.5V DC
  • Beacon Operating Current: <5µA
  • Input Signal: digital/analog signal
  • Operating Frequency Range: 2.4GHz ISM
  • Modulation: GFSK
  • Transmitting Power: +5.0dBm
  • PCB Size: 27mm*33.5mm/1.06*1.32"
  • Mounting Hole Size: inner diameter of 3.1mm/outer diameter of 6mm

  • Documents
  • Product wiki
  • Schematics

  • Shipping List
  • Gravity: BLE Sensor Beacon ×5
  • 4Pin Connector ×5
  • Jargon buster

    Plain-language definitions for the technical terms used above.

    ADC
    An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
    BLE
    BLE stands for Bluetooth Low Energy, a Bluetooth mode designed for lower power use and modern phone compatibility. It matters because BLE support can make the module easier to use with Apple devices and battery-powered projects, though it may behave differently from classic serial Bluetooth.
    Bluetooth beacon
    A Bluetooth beacon is a device that repeatedly broadcasts a small wireless signal so nearby phones, receivers, or gateways can detect its presence. It is useful for proximity, tracking, and simple location projects, but it is not the same as a full two-way Bluetooth data connection.
    Eddystone
    Eddystone is a Bluetooth beacon format originally defined by Google for broadcasting identifiers or small pieces of data. Support for Eddystone matters if your project needs to work with software or receivers that expect that beacon format.
    ESP32
    ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
    Gravity
    Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
    iBeacon
    iBeacon is Apple’s Bluetooth beacon format for broadcasting an identifier that nearby devices can recognise. Support for iBeacon matters when building proximity or location projects that need compatibility with apps or systems using that format.
    IoT
    Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
    PCB
    A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.

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