With this kit, you have learned how to use your mobile phone as a Human-Machine Interface (HMI) to communicate with your XBee 3 BLU device over Bluetooth, read sensor data, and perform actions such as toggling an LED. In other terms, you have extended the capabilities of devices lacking a native HMI, showcasing the practical applications of Digi’s technology in industrial and consumer electronics.
| To get more in-depth information about the use case of this demo, see XBee to phone/tablet communication. |
Key achievements
As part of this guide, you have:
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Deployed a configuration setup onto the XBee 3 BLU device using the Quick Setup feature of XBee Studio.
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Utilized the Remote HMI demo from the Digi XBee Mobile app to:
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Interact wirelessly with the module plugged into the XBIB-C development board to read temperature and humidity values from its embedded I2C sensor.
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Manage the status of the User LED, simulating control of industrial machinery or consumer electronics.
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Demo components review
Here is a brief explanation of the role of each component that took part in the communication:
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The MicroPython Application running on the XBee 3 BLU device:
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Listens for commands from the XBee Mobile app.
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Reports temperature and humidity values every 5 seconds.
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Allows for the changing of the User LED status on the board.
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The Digi XBee Mobile App:
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Scans for BLE devices.
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Establishes a secure communication with the selected device.
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Interprets the received sensor readings from the device.
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Sends commands to the device to toggle the User LED of the XBIB-C development board.
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