| Summary: | 碩士 === 國立臺灣科技大學 === 光電工程研究所 === 102 === A new driver circuit for a low cost bidirectional free-space transceiver that is made by a single Light Emitting Diode (LED) is proposed. This LED can have automatic switchable receiving and transmitting functions. Under normal conditions, this module acts as a receiver when there is no input signal. On the contrary, when a signal input, it automatically switches to a transmitter. This can be applied to mobile devices that are temporarily out of service, such as in hospitals, on the plane, in the basement or other special circumstances. Experimentally, using Arduino UNOs and the new driver circuit of visible light LED bidirectional modules, messages were sent to each other between two computers in a wireless way.
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