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| license: apache-2.0 |
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| # Pebble Tracker |
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| Pebble is a battery-powered, cellular-based, multi-sensor development board designed by [IoTeX](https://iotex.io/) and [Nordic Semiconductor](https://www.nordicsemi.com/), combining tamper-proof hardware and tamper-proof software to generate verifiable data. Built around Nordic Semiconductor’s latest low-power nRF9160 System-in-Package (SiP) and driven by open-source firmware, Pebble Tracker is equipped with GPS support, a variety of rich sensors, NB-IoT/LTE-M connectivity, and advanced security features that make it ideal for sophisticated logistical applications where trust is paramount. In combination with the IoTeX blockchain, its on-board capabilities allow developers to design and build innovative, decentralized IoT solutions that go well beyond conventional asset tracking. More information about Pebble Tracker can be found at https://docs.iotex.io/ecosystem/powered-by-iotex-devices/pebble-tracker. |
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| ## Integrated Sensors |
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| Pebble combines an environmental sensor (temperature, relative humidity, barometric pressure, altitude, and volatile organic compounds - VOCs), a motion sensor (3-axis gyroscope, 3-axis accelerometer), and an ambient light sensor. It's also equipped with cellular network connectivity and integrated GPS supporting precise, long range tracking of asset data using established cellular infrastructure. |
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| | Sensor | Details | |
| | -------- | ------- | |
| | Environmental Sensor BME680 | Relative humidity <br> Barometric pressure <br> Ambient temperature <br> Air quality (VOC) | |
| | Motion Sensor ICM-42605 | 3-axis gyroscope <br> 3-axis accelerometer | |
| | External GPS TD1030 | Position accuracy: 3m <br> Speed accuracy: 0.1 m/s <br> Data frequency: 1 hz to 10 Hz| |
| | Ambient Light Sensor AMS TSL2572 | 45,000,000:1 Dynamic Range <br> Operation to 60,000 lux in Sunlight <br> Very High Sensitivity <br> Package UV Rejection Filter | |
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| # IoTeX Pebble Dataset |
| <!-- Provide a quick summary of the dataset. --> |
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| This dataset contains data from the real physical world collected by Pebble devices. |
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| ## Dataset Structure |
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| | Sensor Data | Data Type | Description | |
| | -------- | ------- | ------- | |
| | Snr | string | Signal-to-noise ratio of NB-IoT/LET-M | |
| | Vbat | string | Voltage of battery | |
| | GasResistance | string | Air quality (indoor) | |
| | Temperature | string | Environmental temperature | |
| | Pressure | string | Air pressure | |
| | Humidity | string | Environmental humidity | |
| | Light | string | Ambient Light | |
| | Gyroscope | string | Angular velocity around the X-axis, Y-axis and Z-axis | |
| | Accelerometer | string | Acceleration along the X-axis, Y-axis and Z-axis | |
| | Latitude | string | GPS latitude | |
| | Longitude | string | GPS longitude | |
| | Timestamp | int64 | Timestamp of sensor data sampling | |
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