optoisolator

  1. S

    Connecting 6 push buttons with ESP32 with 1 common pin

    Hey all I have 6 buttons that have the following voltage: I want to hook up a 4N25 to each one of these so I can use the ESP32 as a "virtual push" to each of these buttons. When the button is pressed the 3.2vdc goes to ground. To minimize the amount of wire going to each one I have come up...
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