HC05 Bluetooth communication module wireless serial communication Arduino/Mixly//Python programmable accessory

The Bluetooth sensor is a master-slave Bluetooth serial port module. When the Bluetooth device is successfully paired and connected, the Bluetooth internal communication protocol can be ignored and Bluetooth is used directly as the serial port. When a connection is established, the two devices share a channel, that is, the same serial port. One device sends data to the channel, and the other device can receive the data in the channel. Of course, there are certain conditions for establishing this kind of channel connection, which is to set the AT mode of Bluetooth to enable pairing connection.