I'm currently using NodeRED to interact with the GPIO pins of my RPI4 board. All works pretty well, but when I'm rebooting my RPI I have a very short signal pulse to the relays that are connected to the GPIO output pins. Which means that strange things happen in my home automation (curtains closing,…

[image] rik1984: The question is still whether this will fix the spike You could presumably add debounce logic to the PLC that required a certain width input pulse to react, and set it greater than the spurious signal.

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Strange signal spike to GPIO pins at startup of NodeRED (Pigpiod)

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