When choosing a suitable Bluetooth module, you need to consider the following key factors:
Transmission distance: Choose the appropriate transmission distance according to the needs of the application scenario. The transmission distance of the Bluetooth module is mainly divided into 100 meters and 10 meters. The connection at 100 meters may not be stable, but the connection can be stable above 50 meters.
Communication interface: Choose the appropriate interface type according to actual needs, such as serial interface, digital IO port, analog IO port, SPI programming port, USB interface and voice interface, etc..
Working method: Choose whether the module is a master or a slave according to the specific application scenario. The low-power Bluetooth module can communicate with multiple slaves at the same time, while the classic Bluetooth module is suitable for point-to-point communication.
Power consumption: Smart devices usually require low power consumption, so it is recommended to choose low-power Bluetooth modules (BLE). These modules have significant energy-saving characteristics and are especially suitable for small battery-powered devices.
Transmission content: Select the appropriate module according to the type of data that needs to be transmitted. For example, data transmission modules and modules that support voice transmission use different chips, so users should pay special attention when selecting them.
Package form: Choose the appropriate package form according to the needs of the device, such as direct plug-in type, surface mount type and serial port adapter, etc. Modern smart devices pursue small size and generally use surface mount types.
Master-slave relationship: The master module can actively search and connect to other devices, while the slave module waits to be searched and connected. Generally, smart devices choose slave modules, while the master module is used to control the center equipment.
Supplier selection: Choose a supplier that integrates R&D, production, sales and after-sales to ensure that it can provide complete technical support and after-sales service.
