User's Manual

User Manual of HC-02 V1.1 Bluetooth Serial Port Communication Module Gathering information and Carrying Dreams
Website: http://www.hc01.com
Guangzhou Huicheng Information Technology Co., Ltd.
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Sales hot line: 020-8408-3341
Address: Room 608, No.19, Jiangong Road, Tianhe Software Park, Tianhe District, Guangzhou City, Guangdong Province Technical customer service: 445253184
2. Connection Description
2.1 Operating Principle
Note:
As shown in the figure above, the HC-02 module is used together with the HC-06 master module to replace the
physical connection during full duplex communication. The equipment on the left sends UART data to the module.
After receiving UART data, the RXD port of the module automatically sends the data to the air in the form of radio
waves. The module on the right can automatically receive the data and restore the UART data originally sent by the
left device from the TXD. The same is true from right to left.
2.2 Connection between the module and other equipment like MCU
①: When the module is connected to the MCU with the power supply system of 3.3V, the serial ports can be cross -
connected. (The RX of the module is connected to the TX of the MCU, and the TX of the module is connected to the RX of
the MCU)