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<blockquote data-quote="alexburcea" data-source="post: 381" data-attributes="member: 3"><p>Hi,</p><p>Assuming you have V2.x, there is an interrupt pin connected to Raspberry PI GPIO11. But I am not sure that is your problem because the inputs are filtered out for using AC signals. It is hard to tell you the cutoff frequency of the filter because this depends of the voltage you use for the switch but is not greater than 10Hz. Your 10ms should catch any transition if any (actually the 10ms will overload the Raspberry I2C port, if NodeRED manage to do a request each 10ms). If you see the corresponding LED flashing when you push the button, you should be able to catch that event but if you did not see it, the voltage was too low and/or contact was too fast.</p><p>Please let me know what version of the card you use and input voltage.</p></blockquote><p></p>
[QUOTE="alexburcea, post: 381, member: 3"] Hi, Assuming you have V2.x, there is an interrupt pin connected to Raspberry PI GPIO11. But I am not sure that is your problem because the inputs are filtered out for using AC signals. It is hard to tell you the cutoff frequency of the filter because this depends of the voltage you use for the switch but is not greater than 10Hz. Your 10ms should catch any transition if any (actually the 10ms will overload the Raspberry I2C port, if NodeRED manage to do a request each 10ms). If you see the corresponding LED flashing when you push the button, you should be able to catch that event but if you did not see it, the voltage was too low and/or contact was too fast. Please let me know what version of the card you use and input voltage. [/QUOTE]
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