Welcome to Bluetooth 4.0 module repository

Introduction of Bluetooth4.0 module

1. Introduction:

This Bluetooth module is designed for smart wireless data transmission. It adopt CC2541 chip, 256KB space, and follows the V4.0BLE Bluetooth specification. It support AT command, users can change the serial port baud rate, device name, pairing password and other parameters as needed. This module supports UART interface and supports SPP Bluetooth serial port protocol, which can realize its powerful functions with only a few peripheral components.

2. Specifications:

PCB size: 37mm*16mm

Weight: 4g

Transmission distance: 10~20m

Reaction rate: <0.4s

Operating frequency: 2.4GHz ISM band

Modulation method: GFSK (Gaussian Frequency Shift Keying)

Sensitivity: ≤ -84dBm at 0. 1% BER

Transmission rate: Asynchronous: 6 kbps Synchronous: 6 kbps

Security features: Authentication and encryption

Support Services: Central & Peripheral UUID FFEO, FFE1

Power consumption: In the automatic sleep mode, the standby current is 400uA^ 1. 5mA, and the transmission is 8. 5mA.

Power supply: +3. 3V DC 50mA

Appearance size: 26. 9mm x 13mm x 2.2 mm

Function: master-slave

3.Physical characteristics

4.Electrical characteristics

5.Application circuit diagram

!!!Note:The application circuit diagram is a Bluetooth serial port circuit diagram.

6.Dimensions

The AT command set commonly used by this Bluetooth 4.0 module:

Method of enter AT's command : After the Bluetooth module is powered on normally, if it is not paired with other devices, it is in AT mode.

1).test instruction:

2).Get the version number:

3).Get the Bluetooth module address:

4).Set/Inquire Device name:(Restart takes effect)

5). Set/Inquire Pairing password:(Restart takes effect)

6).Set/Inquire Module authentication work type:(Restart takes effect)

7).Set/Inquire Serial port baud rate:

8).Set/Inquire Serial port stop bit

9).Set/Inquire Serial parity bit

10).Start work order

11).Set/Inquire Master-Slave mode

After the role is set, it needs to be restarted to take effect. When the hardware sets the master-slave mode state, you can use AT+ROLE to query. The setting command cannot change the master-slave mode.

12).Search for Bluetooth devices

Example:

Send search for:

     AT+INQrn

Back:

OKrn

+INQSrn                                 --------- start

+INQ:0 0x001583000001rn    -------- Bluetooth devices name0

+INQ:0 0x001583000002rn    -------- Bluetooth devices name1

      ............

          +INQErn                                   --------- End