delay-SET will be tied to the pulse-on-false node connected to switch so that it starts when door is opened. If this is the case, that is what I suggested using the delay node for. I’m guessing what you said is that sending a pulse to the play node does not work because the play node needs the input signal to be HIGH long enough to play the sound (so a pulse is not long enough), but from previous post you can’t just use the switch output because it will continually repeat the play sound instead of just playing it once. It may also be worth having a look around the Arduino forums to see if anyone has already done something similar that you could copy.
#TONEGENERATOR ARDUINO TOO QUIET HOW TO#
Perhaps you could use one of those and add some code to play the mp3 (not sure how to do that but there’s bound to be an example somewhere on the net), then add some logic to wait for the switch to go high again to reset the program to wait for the switch to go low. There are examples for using buttons connected to an arduino that are used to switch a led on and off in the Arduino examples.
It would probably only be a few lines long and not too hard to put together. For a simple program like this you may find it easier to use the original Arduino IDE than XOD, and write your program in C. I don’t know anything about electronics so I can’t help with that, but there is a website called where you might be able to find someone in the forums to help you design a simple circuit to do what you need.Īlternatively a simple Arduino program could probably do it too, and probably for a very similar cost. I still think a simple hardware circuit would probably be an option, with maybe a capacitor that discharges in the time required to switch the switch off again after it’s been switched on (or vice versa) but I don’t know if it’s possible to trigger an mp3 player.
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