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+--- Thread: KC868-A8 and PCF8574 Interrupt pin (/showthread.php?tid=1947)
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RE: KC868-A8 and PCF8574 Interrupt pin - admin - 09-11-2024
i don't understand what you want to do details.
RE: KC868-A8 and PCF8574 Interrupt pin - GVDC - 09-11-2024
Hello,
With Interrupt pin you can verify at each moment during the loop the pressure of a fluid (with analog meter).
If that pressure is higher than a maximum tolerated value, the sketch must be stopped immediately because damage will occur.
I use now IDE version 1.18.19.
Is it possible witch V1.5?
The control must be done continiously from the begin of the loop until the end.
I don't know the code for it and I do not find codes nearby.
Thanks
RE: KC868-A8 and PCF8574 Interrupt pin - admin - 09-11-2024
if you will use analog meter, it will connect with KC868-A8 board's analog input port, not use by PCF8574, that use for digital INPUT or OUTPUT.
RE: KC868-A8 and PCF8574 Interrupt pin - boe666 - 11-17-2024
A16 - for use the interrupts for PCF8574 (U32 U31) can I remove R147 and R148 and connects INT pins (PCF) to the unused GPIO8 and GPIO9 ESP32 ?
ESP32 can hold interrupts on this port - somebody tested similar idea ?
BTW, I don't understand why Kicony doesn't use that INT pins....
RE: KC868-A8 and PCF8574 Interrupt pin - admin - 11-18-2024
because not enough gpio for you. PCF8574 already can work well without INT pin. if you MUST want use INT pin, you can connect with any ESP32 free GPIOs.