It primely depends on the range between the master and the slave units which is not specified in the original post. If the distance is less than 100 meters, you may use TLP433 Rf transmitters and receievers which will communicate wirelessly, or you may use three wires with RS232 communication. If the distance is more than 500 meters, you may opt RS485 which will communicate with just two wires for more than a kilometer. Good luckneroburn said:Hello all,
How could I implement mutiple display using PIC. The Display got 1 master and 5 slave. If we number display in master, the slave should be same number. the problem how to make if the range of between display is long. and I want to minimize the wiring and port using. Please help me...
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