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Single channel multifunctional radio transmitter schematic diagram

Source: InternetPublisher:sigma Keywords: transmitter radio transmitter I/O Updated: 2020/05/02

A single-channel multi-functional radio transmitter is designed using the microcontroller EM78P153 , which can control the transmission time. The transmission time can be input by the user. Turn on the transmission button, set the time for channel timing, and stop transmitting when the countdown time is up. For those who require simple timing Radio transmitting and receiving device for remote control.

EM78P153 can have up to 12 I/O ports. 7 are needed to drive the LED digital tube. The bit driver requires 2 I/O ports, one output port, and 4 button input ports. In this way, the I/O of EM78P153 There is only one less port, and we can use an I/O port as a multiplexing pin. This problem can be solved.

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