Bluetooth Transceiver Module

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Gibt es bei ebay unter dem Namen:

  • Wireless Bluetooth Transceiver Module RS232 / TTL

zu Preis von etwa 5€

Basic AT commands

  • Master or Slave
Command Parameters Response
set AT+ROLE=(num) num: "0" for slave, "1" for master OK
query AT+ROLE? NULL +ROLE=num


  • UART set and query
Command Parameters Response
set AT+UART=(rate),(num1),(num2) rate: 4800, 9600, 19200, 38400, 57600,115200, 230400, 460800, 921600, 1382400

(any one of these would be OK)
num1: Stop bits. “0” for 1 stop bit; and “1” for 2 stop bit
num2: Parity. “0” for none; “1” for odd parity; “2” for even parity

OK
query AT+ROLE? NULL +UART=(rate),(num1),(num2)