HM-10 Bluetooth

HM-10 Bluetooth 4.0 Low Energy (BLE) Module

The HM-10 is a popular and versatile wireless data transmission module based on the Bluetooth Specification V4.0 BLE (Bluetooth Low Energy) standard. It is ideal for embedded systems and Internet of Things (IoT) projects that require low-power communication.

Key Features and Specifications

• Bluetooth Standard: Bluetooth Specification V4.0 BLE (Low Energy).
• Core Chip: Typically based on the Texas Instruments CC2541 System on Chip (SoC).
• Operating Voltage: The module itself typically runs on 3.3V DC, but most breakout boards (like the one shown) include a voltage regulator, allowing for 5V DC input (compatible with Arduino/most microcontrollers).
• Low Power Consumption: Its BLE design makes it suitable for battery-powered projects, featuring ultra-low power consumption in sleep mode (as low as $50\mu\text{A}$ to $400\mu\text{A}$).
• Communication Interface: Uses a Serial UART (Universal Asynchronous Receiver/Transmitter) interface for transparent data transmission with microcontrollers (like Arduino or ESP32).
• Configuration: Fully configurable using a comprehensive set of AT Commands sent over the serial port.
• Role Flexibility: Can be configured to operate as both a Master (Central) or Slave (Peripheral) device.

Applications

The HM-10 is widely used in projects requiring efficient, low-power wireless data links:

• Wireless sensor networks.
• Remote control applications (e.g., controlling a device via a smartphone app).
• Home and industrial automation.
• Mobile phone accessories and health monitoring devices.