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Arduino

1b16 HM-10 transparent serial port Bluetooth 4.0 module with logic level translator

1b16 HM-10 transparent serial port Bluetooth 4.0 module with logic level translator

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Description

  • Most complete, most convenient, and most stable Bluetooth data transmission, remote control, and data acquisition module
  • Master-slave in one, transparent transmission, replacing serial port
  • Remote control, transparent transmission, MCU is unnecessary
  • Remote data acquisition, transparent transmission, MCU is unnecessary

The HM-10 Bluetooth module for Arduino (Master Slave) uses the TI CC2540 or CC2540 chip, configure 256KB space, and support AT command. Users can change the role (master, slave mode) and the serial port baud rate, equipment name, matching password and other parameters on-demand. It is very flexible to use.

Specifications

  • +2.5v to +3.3v
  • Requires up to 50mA
  • Uses around 9mA when in an active state
  • Use 50-200uA when asleep
  • RF power: -23dbm, -6dbm, 0dbm, 6dbm
  • Bluetooth version 4.0 BLE
  • Default baud rate pre firmware V700 is 9600
  • Default baud rate firmware V700 and up is 115200
  • Default PIN is 000000
  • Default name is HMSoft
  • Based on the CC2540 or the CC2541 chip

The latest HM-10s all appear to the the CC2541 chip. This is the same as the CC2540 except it is lower power and has a shorter range. The CC254x is based on the 8051 and runs at 32MHz.

The HM-10 is has become a very popular Bluetooth 4 BLE module for use with the Arduino. In part due to the standard UART serial connection that makes it fairly straight forward to connect to an Arduino. The UART layer is a good thing and a bad thing, it allows ease of use but it hides the BLE layer so you have no control over the actual BLE side of things. The HM-10 is Bluetooth version 4.0 only. This means it cannot connect to Bluetooth 2/2.1 modules such as the HC-06 and HC-05.

 

Here is an excellent article to get you started: http://www.martyncurrey.com/hm-10-bluetooth-4ble-modules/