02-18-2025, 01:54 AM
(This post was last modified: 02-18-2025, 01:58 AM by Cesarcardca.)
(02-09-2025, 04:16 AM)admin Wrote: you need to solder the PCF8574 INT pin to ESP32 one free GPIO.
Hello, I have been researching to be able to use a gpio as an interrupt and I see that the 433M_T pin goes directly from the stm32 IO15 to the Header 3 p7, I can use that pin since I do not need the RF circuits and by placing a pull down resistor I can obtain an interrupt in my Arduino code.