The FSC-DB200 Arduino audio development board includes a Bluetooth module, LINE in, Headphone audio output, MIC input, Type-C power supply, USB-to- UART, LED status indicator, external antenna connector, Arduino reset button, Bluetooth module reset button, CTS/RTS select, SDID output, I2S/SPI select, NEXT/VOL+/Back/VOL-, ON/OFF/PLAY, etc.
FSC-DB200 only occupies ~10 and ~11, other I/Os are open to developers.
We also provide the Arduino example source code to guide developer to program with the Feasycom Bluetooth module.
A: Please check whether the hardware connection between Arduino development board and FSC-DB200 is correct. When FSC-DB200 is working normally, the blue indicator light will flash. When Serial Monitor app prints "mySerialbaudrate = 38400", it means the connection is successful.
A: Please check whether the other software has occupied your serial port. If occupied, please close that software.
A: Please check whether the AT command you sent is correct, . Illegal command will never be responded to. All AT commands should be ended up with New Line and Carriage Return, so select Both NL & CR at the bottom right of the Serial Monitor.