Introduction

HLK-B50S is a Bluetooth serial port transparent transmission module developed and produced by Hailingke Electronics, supporting BR/EDR and BLE5.3 dual-mode Bluetooth, various

Devices with serial ports can easily and quickly use Bluetooth wireless data transmission and reception through this module.

This product supports BLE master-slave integration and can be set as a BLE slave device or host device for use.

By using the serial port Bluetooth bidirectional transparent transmission function of this module, users do not need to understand the complex Bluetooth protocol stack, only need to connect the customer's device or the MCU's serial port is connected to this module, and the module will automatically complete bidirectional data forwarding between the serial port and Bluetooth (GATT or SPP). GATT and SPP can be connected simultaneously, acting as a bridge between the user's MCU serial port and Bluetooth device, enabling the user's serial device to add Bluetooth wireless transmission function.

Support AT commands, which can be used to query or set basic parameters of the module, such as device name, serial port baud rate, etc., through serial port AT commands.

Support configuring module parameters wirelessly via Bluetooth BLE and upgrading module firmware wirelessly via OTA;

This module provides rich testing tools and user documentation, including a mobile app demo, making it easy for users to quickly familiarize themselves with and apply this module.

The module has abundant on-chip resources and external pins, which can provide flexible and in-depth software and hardware customized development services according to the specific needs of customers

Working principle

Product characteristic

• Built in 32-bit ARM CortexM3 core, with a clock speed of up to 48MHz

• Fast and stable Bluetooth serial port transparent transmission, with a serial port baud rate of up to 921600

• Master slave integrated Bluetooth BLE5.3, can be set to master or slave mode, supports binding encryption

• Dual mode Bluetooth, capable of data transmission through GATT or SPP, and can be connected simultaneously

• Built in Watchdog, reliable for long-term operation

• Wide operating voltage of 2.1~3.6V, typical value of 3.3V

• Rich output pins (UART, I2C, SPI, GPIO, ADC, PWM, I2S, etc.), providing flexible and in-depth software and hardware support

• Customized development services

Using application

The serial Bluetooth bidirectional transparent transmission provided by HLK-B50S provides a simple and flexible data channel, which can be widely applied to various needs in products that transmit data wirelessly via Bluetooth.

At the same time, this module is equipped with a 32-bit ARM CortexM3 core, as well as rich peripheral and interface resources, which can replace some microcontroller functions directly  used as the main controller to reduce costs and improve integration for customers' products.

The commonly used application scenarios are as follows:

• Smart home/home appliances

Control smart sockets, smart lights, smart door locks, etc. through mobile phones

• The Internet of Things

Mobile phones and devices, wireless transmission of data between devices

• Bluetooth speaker

• Instruments and meters

Read data wirelessly through Bluetooth, configure parameters, etc

• Industrial and agricultural control

Connect various control or sensing devices wirelessly via Bluetooth for reading and control

• Medical and health care

Health data monitoring, wireless monitoring devices, etc

• Automotive Electronics

Wireless detection and control, etc

• Toys and entertainment

Bluetooth remote control, wireless control and transmission

More possibilities are waiting for you to unlock

Module dimension and pin definition