- #COOLTERM INPUT HOW TO#
- #COOLTERM INPUT INSTALL#
- #COOLTERM INPUT SERIAL#
Image:Coolterm Preferences 38400.png|Set Serial Port Image:Coolterm Preferences BT.png|Set Terminal
Port: the port number can be got from the Device Manager of the computer. 
Click Connection -> Choose Options to set several parameters in CoolTerm. Install the driver for the USB to Serial module if it can't be recognized.Īfter connecting the module to computer, we can use CoolTerm software to talk with Bluetooth module.Connect the USB to TTL module to your computer.Turn on the AT mode switch of the Bluetooth module.Plug the Bluetooth module into the USB to TTL module.Software: CoolTerm, you can also use Arduino IDE serial monitor.So if you turn the NO.2 switch on, you can use the AT mode to set the Bluetooth module, e.g. The NO.2 switch is used to turn on/off AT mode of the Bluetooth module (On->Enter 2->Exit).The NO.1 switch is used to set the LINK-LED on/off for power saving.(1 for off, ON for on).The DF-Bluetooth V3 module has two switches on the module.
Set module in AT mode How to enter into AT mode UART Output(TTL Level), connect to MCU RXDĭC3.3V (When there is 3.3V input, the VCC port cannot be connected to power source) UART Input(TTL Level), connect to MCU TXD
Input Voltage: +3.5V～+8V DC or 3.3V DC/50mAģ.5-8V DC (When there is VCC input, 3V3 port can be used as 3.3V power output). Support profiles: Bluetooth serial port. Security: Authentication and encryption. Transmission rate: Asynchronous: 2.1 Mbps (Max)/160 kbps Synchronous: 1Mbps/1Mbps. Transmission Distance: 20-30 in free space. Modulation Mode: GFSK (Gaussian Frequency Shift Keying). Working Frequency: 2.4-2.48GHz unlicensed ISM Band. Bluetooth Protocol: Bluetooth Specification v2.0 +EDR. When two such modules are set as master and slave respectively, they can be paired freely for data transmission, which is very suitable for data communication of two MCUs. AT mode can set the module to AT command mode, and the baud rate and mater-slave mode can be revised by AT command. Turn off the LINK light via LED off to enter power-saving mode. With transparent serial port, it can be paired with all sorts of Bluetooth adapters or phone's Bluetooth for convenient redevelopment. In addition, the module comes with on-board antenna that offers quality singal and longer transmit distance. There are STATE and LINK indicators for displaying the working and connection status of the module (STATE: Search state(high 104ms cycle 342ms flashing 2.9Hz) Connection state(high 104ms cycle 2ms flashing 0.5Hz) LINK: keep ON when paried). The module has two DC input ports and can be powered at 3.5~8V wide voltage range or 3.3V, which allows it to be suitable for various scenarios. DF-BluetoothV3_Bluetooth_module_SKU_TEL0026_-DFRobotĭF-Bluetooth module V3 adopts a unique double-board design to prevent electrostatic damage to the module as well as providing a beautiful appearance.
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