This application note describes quick start for using Feasycom dual-mode Bluetooth data-transceiving modules, including BT616, BT646, BT686, BT816S, BT826, BT836, BT906, BT909, etc. These modules share a pin-to-pin compatible package, and can be directly soldered on FSC-DB005 USB-to-TTL adapter.
. If you have already-on-hand USB-to-TTL cable other than FSC-DB005, you can simply wire TXD, RXD, GND, VDD pins of Bluetooth module with RXD, TXD, GND, VDD pins of your USB-to-TTL cable.
. Smart Phone in the diagram could be Android device (SPP, BLE, HID) or iOS device (BLE, HID).
. Certainly, this is just one of the application scenarios, you can wire the Bluetooth module with any other devices, Printed Circuit Boards (PCB) that meet the requirments (RXD and TXD for UART communication, GND and VDD for power supply).
. While wiring PIN32 and PIN33 of Bluetooth module with LEDs, connection status of Bluetooth module will be represented by LEDs for direct vision.
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