Build a transistor circuit board for controlling Air Conditioner remote control with Arduino

I was supporting a group of student on their graduation project. One of the difficulties they faced was on controlling an A/C unit with Arduino microcontroller. The first experiment we tried to work it out was by record the A/C remote control beam signal for each needed button by using the IRrecvDump code with IRremote library for Arduino (https://github.com/shirriff/Arduino-IRremote). Then, use these signa ...

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