Welcome to Bluetooth 4.0 module repository
Introduction of Bluetooth4.0 module
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.
PCB size: 37mm*16mm
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
5.Application circuit diagram
!!!Note:The application circuit diagram is a Bluetooth serial port circuit diagram.
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.
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
Send search for:
+INQSrn --------- start
+INQ:0 0x001583000001rn -------- Bluetooth devices name0
+INQ:0 0x001583000002rn -------- Bluetooth devices name1
+INQErn --------- End