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Fig1: BLE4.1 Minimum System Schematic

Smartphone Bluetooth Connection

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Android Terminal and IOS Terminal

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BlunoBasicDemo Android, Android source code (DFRobot)

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LightBlue IOS

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Blynk IOS

Different from the traditional Bluetooth (such as Bluetooth headset), BLE4.1 need specified

eigenvalue and device service ID to connect smartphone. The direct connection between BLE and

smartphone device manager will lead to communication problems. Therefore, it needs a the third

party APP, such as BunoBasicDemo (published by DFRobot), BLE Device Monitor from TI .etc.

In this section, we'll take BunoBasicDemo published by DFRobot as an example.

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Set BLE4.1 as peripheral device with command AT+ROLE=ROLE_PERIPHERAL. Set connection

mode as P2P by AT+NETWORK=P2P command and restart BLE4.1 (power off and restart).

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Open BunoBasicDemo app, click SCAN, then we'll see the scanned BLE4.1 device .