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hongwai
- 红外二极管发射38K红外光，用相应的红外接收头来接收，在示波器上能看到接收到的波形和发射的波形高低电平相反-38K infrared diode emitting infrared light, receiving up to receive the corresponding infrared, you can see the waveform on the oscilloscope and waveform of the received transmit high and low cont