Module is used where short distance wireless communication is needed. The module is used for wireless communications of less than 100 meters. The module is preferred where power consumption is issue. HM-10 MODULE is designed by BLE chip so it consumes very less power to function. So the module can be used on mobile systems. The module uses UART communication and so it can be interfaced with almost all controllers or processors.
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Description
The HM-10 is a readily available Bluetooth 4.0 module. This module is used for establishing wireless data communication. The module is designed by using the Texas Instruments CC2540 or CC2541 Bluetooth low energy (BLE) System on Chip (SoC). The module design and firmware originated from the Jinan Huamao Technology Company.
HM-10 Pinout
| Pin Number | Pin Name | Description |
| 1 | UART_TX | UART interface-Transmit |
| 2 | UART_RX | UART interface-Receive |
| 3 | UART_CTS | UART interface |
| 4 | UART_RTS | UART interface |
| 5 | NC | No Connection |
| 6 | NC | No Connection |
| 7 | NC | No Connection |
| 8 | NC | No Connection |
| 9 | NC | No Connection |
| 10 | NC | No Connection |
| 11 | RESETB | Reset if low for 100ms |
| 12 | VCC | 3.3V |
| 13 | GND | Ground |
| 14 | GND | Ground |
| 15 | USB_D- | USB interface |
| 16 | NC | No Connection |
| 17 | NC | No Connection |
| 18 | NC | No Connection |
| 19 | NC | No Connection |
| 20 | USB_D+ | USB interface |
| 21 | GND | Ground |
| 22 | GND | Ground |
| 23 | PIO0 | System Key |
| 24 | PIO1 | System LED |
| 25 | PIO2 | Programmable input/output line |
| 26 | PIO3 | Programmable input/output line |
| 27 | PIO4 | Programmable input/output line |
| 28 | PIO5 | Programmable input/output line |
| 29 | PIO6 | Programmable input/output line |
| 30 | PIO7 | Programmable input/output line |
| 31 | PIO8 | Programmable input/output line |
| 32 | PIO9 | Programmable input/output line |
| 33 | PIO10 | Programmable input/output line |
| 34 | PIO11 | Programmable input/output line |
Technical Specification
| Bluetooth Version | Bluetooth 4.0 |
| BLE Chip | CC2541 |
| Send and Receive | No byte limit |
| Working Frequency | 2.4GHz ISM band |
| Communication | UART |
| Range | Open space 100m |
| Operation Voltage | 2.0V to 3.6V |
| Consumes Current | 235uA on battery backup |
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