PC remote control circuit-EEWORLD

Collect

The basic principle of the circuit is to collect infrared signals through the infrared receiver. When an infrared signal comes in, the AT89C2051 microcontroller software executes an interrupt and decodes the collected infrared signal, and sends it to the PC from the serial port. The PC software Girder receives the characters sent from the serial port and then makes corresponding command operations according to the definition (for the basic use of Girder, please refer to ). Several simple components are used in the circuit to make a serial port power stealing circuit, so that this remote control does not need an external power supply. It can be used by plugging it into the serial port. It can be said to be plug and play:). After installation, after running Girder, the indicator LED1 starts to flash, indicating that the circuit is working normally. At this time, you can use your remote control. When Girder is turned off, the power supply of the circuit board will also be cut off, and the indicator light will go out. The figure is the complete electrical schematic diagram of this remote control receiver:

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