Turn off light with Blynk after PIR detects motion

[John93]

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Fix BLE Connection problem Packet too big on BBC Microbit, RFDuino, nRF51822,

When using BLE on boards using the library arduino-BLEPeripheral, the Blynk connection request nearly always fails with the message “Packet too big”. Following boards are using the library arduino-BLEPeripheral when using Blynk: BBC Microbit RF Duino BLE RedBearLab nRF51822 and other nRF51822 based boards nRF8001 based boards Cause The main cause of this problem is the size of the receiving buffer, which has only has a maximum size of 20 bytes. Other Blynk implementations of BLE boards howe…