Mini FM Wireless Microphone Module, Miniature FM Transmitter Module
Store Name: Vector Trading Company
Rating: 0.0 / 5.0
Spesification
Description
One: instructions for use
<1>Power supply
The back of the module corresponds to the port GND, and the 3.7V is connected to the negative pole and the positive pole of the power supply (battery) respectively, and the power supply is recommended to use a battery or transformer buck stabilized power supply. Can not use the switch power supply without filter (such as mobile phone charger, charging treasure, switch type DC-DC power supply), otherwise the power supply part of the high frequency interference will affect the normal operation of the module. The normal operating voltage of this module is 3.0-5.0V, the power supply voltage should not exceed the scope.
<2>: Antenna
The ANT port is used to connect the FM antenna for betterlaunchFM signal, it is suggested that the 75cm rod antenna should be connected externally, and the barrier near the antenna can be shielded as far as possible.
<3>Frequency adjustment
The module needs to configure its transmitter frequency points with the computer (refer to the frequency allocation method of the following part of the detailed page).
Two: matters needing attention:
1: please confirm that the polarity of the power supply and the voltage of the power supply are no error, then the power supply exceeds the 5V voltage input or the positive and negative polarity of the power supply may cause the permanent damage of the module.
2: work can not touch the back of the module, so as not to affect the normal operation of the module.
Three: pre purchase instructions:
1: all goods provide 7 days unconditional exchange service, if you receive the goods are not satisfied, you can apply for return. Return goods need to bear the postage back to the buyer, the shop does not accept the replacement freight to express delivery!
2: This module is to install components of the circuit board, need to connect the line to work. Buyers need to have some knowledge of electronic operation. For a buyer who does not understand the electronic technology, it is not recommended to buy this module!
3: this commodity only provides limited technical support, please see the product instructions before use.
4: due to various violent collisions express transportation process, although we have test each product before shipment and send it to you, and the packaging done seismic processing, but also the inevitable individual package will be “ internal ”. When receiving goods, please check whether the package is intact in the face of the courier, whether the goods are intact, no loss, whether there is damage or not. Confirm and sign again!
This module is a circuit board with components, so the buyer must have some knowledge of electronic operation. Buyers please see clearly, baby details page to buy, do not know where to ask to determine their ability to operate and then buy, for a little do not understand the electronic technology buyers, do not recommend the purchase of this module! In order to avoid bad toss or burn, strange baby has problems! Thanks for your cooperation!
Product reality (front):
Product reality (back):
Product reality (compared with the size of 1 yuan coin):
Brief introduction of key components:
Wiring port description:
Modify microphone pickup sensitivity specification:
This module can change the pickup sensitivity of the microphone by modifying the negative feedback resistance of the microphone preamplifier circuit, so as to achieve the adaptation of individual users to the special sensitivity requirements. The negative feedback resistance of the preamplifier is 82K ohm. The sensitivity of the microphone increases with the increase of the resistance, and the sensitivity of the microphone decreases.Note: we only provide modification methods, if you want to change, ask customers to buy back to modify their own, shipped all in accordance with the default sensitivity of shipment, we do not change sensitivity parameters for each customer.
The position of the device is shown in the following picture
Frequency allocation method and procedure:
1:USBturnTTLConnection method between module and module
(1Will beUSBturnTTLModule (need to be purchased separately)GND,RXD,TXD,5VPorts and the module respectivelyGND,TX,RX,VCCCorresponding connection
As shown in the following picture
2InstallationUSBturnTTLSerial port module driver (go to baby details page to provide the Tao disk path download)
<1>InstallationCH341SER_V3.3USBTurn the serial port module to drive the folder inside
CH341SER_V3.3[2012-02].EXE
<2>Pop up the following window point installation
<3>Waiting.....
Successful installation
(2) connect wellUSBThe serial port module is inserted into the moduleUSBThe serial port module to the computer, waiting for the automatic installation of drive
..... After the automatic installation is completed
Open device manager, viewUSBturnTTLThe serial number corresponding to the module, I am hereCOM6
3:Installing serial port configuration toolsSerial port tools V1.2(go to the treasure details page to provide the Tao path download)
Installing serial port configuration toolsSerial port tools
Directly open the installation project in the folder, the default installation is OK, installation process slightly.
<1>After installing, click on the desktop
Open the serial port configuration tool
<2>:Choose ourUSBturnTTLModule ports,COM6 After clicking on the serial port, you can click on the serial portTo set the frequency of the module in the tool, enter a frequency in the frequency setting input box76.0-108.0Click on a single write, the lower display of successful write it (in which the automatic write button is continuous writing in mass production is used). Of course, you can also use this tool to set it up and refer to the instructions of this tool in other waysATInstructions can have the same effect. This tool is only for learning and reference.
<3>You can also read the frequency of the module and the version of the module through this tool.
Click “ read ” button
You can return to the current frequency and version information of the module
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Package Detail
- Unit Type:piece
- Package Weight:0.5kg (1.10lb.)
- Package Size:10cm x 10cm x 10cm (3.94in x 3.94in x 3.94in)
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