How i can use 3 infrared transmitters

Hi :slight_smile:

I am using Arduino Ubno, which has a crucial importance, I set 3 infrared transmitters DFR0095 on an electronic card and 3 receivers DFR0094 on another one so the transmitters could send 3 different signals and then every receiver is able to identify the position compared to the signal received.

Actually, the problem faced is that in the libraries that I already used, I can use a unique transmitter (in the third pin) (I used the libraries IRremote and IRsendRever). I tried to modify these libraries in order to adapt the source (file with extension .h) but nothing changed >:( .

I want to know please if you already faced this specific problem before or if you are using other libraries that are more suitable.

Thank you for consideration.

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