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Monday Kids Bluetooth Module DIY HC-05 Master Slave Bluetooth Module Serial Pass Through

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$4.36

Availability: In stock

SKU

RY-ES-490

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Details

Brand Name: Monday Kids
Condition: New
Model Number: DIY A09 HC-05
Type: Voltage Regulator
is_customized: Yes

Bluetooth Module DIY HC-05 Master Slave Bluetooth Module Serial Pass Through

1.1 Common sense (very important):

TXD: The sending end is generally expressed as its own sending end, and normal communication must be connected to the RXD of another device.

RXD: The receiving end is generally expressed as its own receiving end, and normal communication must be connected to the TXD of another device.

In normal communication, the TXD of the device is always connected to the RXD of the device!

Spontaneous: In normal communication, RXD is connected to the TXD of other devices. Therefore, if you want to receive the data you send, just as the name implies, you will receive the data you sent yourself. That is, your TXD is directly connected to RXD to test its own sending and receiving. Whether it is normal or not is the fastest and easiest test method. When problems occur, the test is first performed to determine whether the product is faulty. Also called a loopback test.

1.2 level logic:

TTL level: Usually the data is represented in binary, the specified +5V is equivalent to logic "1", 0V is equivalent to logic "0", called TTL signal system, is positive logic

RS232 level: -12V to -3V, equivalent to logic "0", +3V to +12V logic level, equivalent to logic "1", is negative logic

1.3 Product Features:

1. The core module uses the HC-05 slave module, and the export interface includes VCC, GND, TXD, RXD, KEY pins, Bluetooth connection status pinout (STATE), no connection output is low, and the output is high after connection.

2. led indicates Bluetooth connection status, flash means there is no Bluetooth connection, slow flash means to enter AT mode, double flash means Bluetooth is connected and opened the port

3. The backplane is equipped with anti-reverse diodes, with 3.3V LDO, input voltage 3.6~6V, current is about 30mA when unpaired, about 10mA after pairing, input voltage is prohibited more than 7V!

4, the interface level 3.3V, you can directly connect a variety of microcontroller (51, AVR, PIC, ARM, MSP430, etc.), 5V microcontroller can also be directly connected, without MAX232 can not pass MAX232!

5, open space effective distance of 10 meters (power class CLASS 2), more than 10 meters is also possible, but do not guarantee the quality of the connection distance

6. After pairing, when using a full-duplex serial port, you do not need to know any Bluetooth protocol, support 8 data bits, 1 stop bit, and set the parity check communication format. This is the most common communication format and does not support other formats.

7. You can enter the AT command mode to set parameters and query information by raising the 34-pin height

8, small size (3.57cm * 1.52cm), factory patch production, to ensure patch quality. And set of transparent heat shrinkable tube, dustproof appearance, and a certain degree of anti-static ability.

9, can be switched to the host or slave mode by AT command, the specified device can be connected by AT command

10, support the standard baud rate from 4800bps~1382400bps

1.4 Product use:

After pairing, it only needs to be used as a serial port with a fixed baud rate, so any serial port device with a fixed baud rate, 8-bit data bit, and no parity communication format can directly replace the original wired serial port. No need to modify the program. Such as data acquisition, smart cars, serial printers, outdoor dot matrix screen control and so on.

Paired with a computer: suitable for communication between a computer and a device via a Bluetooth serial port, using the same method as the serial port

Paired with a mobile phone: suitable for communication between a mobile phone and a device via a Bluetooth serial port, using the same method as the serial port

Paired with the Bluetooth host: suitable for two devices directly through the Bluetooth serial communication, such as between the microcontroller and the microcontroller, wired serial port with the microcontroller, etc., use the same way as the serial port

Use workaround:

Baud rate conversion, because the receiver and the transmitter can choose their own baud rate, when the data volume is small, it can be used as a baud rate conversion device.

1 * DIY HC-05 Bluetooth Module