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The sale of the product has been completed. Check others in this category. |
Specification
- Supply voltage: axes 2 V to 3.6 V connected to the VCC pin
- The communication outputs work with a voltage of 3.3 V
- Current consumption: up to approx. 20 mA
- Class 2 - transmitter power max + 4 dBm
- Range: up to 10 m
- Standard: Bluetooth 4.0 BLE
- SPP profile with settings via AT commands
- Communication: UART (RX, TX)
- Outlet Raster: approx. 1.5 mm
- Small dimensions: 27 x 13 mm
Simple communication system based on Bluetooth module HC-08 v4.0 BLE. It communicates through the UART serial interface using AT commands.
Connection
To start the module, connect the supply voltage to the pin marked VCC. The module will be detected by the computer as an unknown circuit or HC-08, there is no need to pair the circuits. A virtual COM port will appear in the system, through which data can be transmitted via any terminal. The board has UART serial interface leads - RX and TX pins, which can be connected e.g. to Arduinoorto a computer viaFTDI adapter.
| Pin | Description |
|---|---|
| 1 | TX - UART output, 3.3 V. |
|
2 |
RX - UART input, 3.3 V. |
|
3 |
Not connected. |
|
4 |
NC - Not connected. |
|
5 |
NC - Not connected. |
|
6 |
DC - Debugging clock line. |
|
7 |
DD - Debugging data line. |
|
8 |
NC - Not connected. |
|
9 |
NC - Not connected. |
|
10 |
NC - Not connected. |
|
11 |
RST - Reset. |
|
12 |
VCC - Power supply from 2 V to 3.6 V. |
|
13 |
GND - Mass |
|
14 |
NC - Not connected. |
|
15 |
NC - Not connected. |
| 16 | NC - Not connected. |
|
17 |
NC - Not connected. |
|
18 |
NC - Not connected. |
|
19 |
NC - Not connected. |
|
20 |
NC - Not connected. |
|
21 |
GND - Mass |
|
22 |
GND - Mass |
|
23 |
NC - Not connected. |
|
24 |
PIO13 - LED output. |
|
25 |
NC - Not connected. |
|
26 |
PIO12 - Memory clearing. |
|
27 |
NC - Not connected. |
|
28 |
NC - Not connected. |
|
29 |
NC - Not connected. |
|
30 |
NC - Not connected. |
|
31 |
NC - Not connected. |
|
32 |
NC - Not connected. |
| 33 | NC - Not connected. |
| 34 | NC - Not connected. |
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Although there are projects in the network where HC-08 is directly connected to 5V pins, e.g. Arduino Uno, for safety reasons we recommend using a3.3V - 5Vconverter. |
Communication can be tested by pairing the module with a computer and connecting the board viaFTDI converter. In two windows of the terminal, select appropriate communication ports and specify the transmission speed 9600 bps. If the configuration is correct, the text sent from one terminal will appear on the other.
Configuration of the module is done by popular AT commands, to enter this mode you have to connect EN output up to 3.3 V. Examples of commands are
- AT- connection testing, in response you get OK.
- AT+BAUD1- sets the speed to 9600 bps.
Instructions should be sent without line termination sign. More commands can be found inthe documentation.
Useful links |
