The infrared port is used to establish communication between two objects by means of radiation at a short distance. Such a device allows, for example, to use the remote control to control the computer while watching movies or listening to music. The infrared port can be purchased in a specialized store or made by yourself at home.
Instructions
Step 1
Use old computer ballpoint mice to make an infrared port. To do this, you need a mouse, in which the wire for connecting to the computer consists of four wires: RTS, Rx, Tx and GND. Ring all wires to determine their name. Glue the mouse pin to the piece of plastic.
Step 2
Solder the infrared LED and the photodiode bridge, and also take a 2-7 kOhm resistor: the higher the resistance, the greater the radius of the IR port. Solder the infrared LED to the Tx wire, then connect in series with a resistor that also connects to ground, which will be parallel to the LED. This circuit is connected in parallel with the Rx wire and soldered to connectors 1 and 3 of the photodiode bridge, after which the RTS wire is connected to the center connector.
Step 3
Install WinLirc software on your personal computer, which works with IR ports. Run the application. A message appears that the configuration was unsuccessful and you need to reconfigure.
Step 4
Connect the made infrared port to the computer and check which port it is connected to through the "Device Manager" menu. Open the IR software. Specify the connection port number in the “Port” field, leave the “Speed” field unchanged. Since the IR LED was connected to the Rx wire, specify RX device in the “Receiver type” field, and TX in the “Transmitter settings” field.
Step 5
After entering the parameters, press "Raw Codes", bring the remote control to the receiver and press the buttons on it. If ripples appear, it means the connection is correct. If not, check if the soldering is correct. Open the "Learn" menu to teach the program to recognize the remote control commands via the infrared port. Set the required parameters and save the setting.
