Great news i found the problem. It´s all about i had enable Nextion Plugin in device tab, but not connected wires betwen ESP and Display. And when i was trying control by commands PCF it´s not work correctly. When I disable Nextion plugin all work good. Today i connect display with plugin enable tog...

Yes a for first testing nextion display. Next step it was be test PCF for expanding i/o pin. When I testing PCF and I had same trouble, i was disconnected display but not disable in device. For nextion task is set hardware serial on pin D7 and D8. For PCF task is set I2C on D1 and D2 I think is righ...

I can't sleep tomorrow and trying solved problem. I found where is problem i was have enable plugin for nextion display but not connected and this making problem when I disable this plugin PCF working good all command work great a pin stay in our status. Today a try enable and connect display becaus...

Now i test situation, when i reboot and change state of gpio 1 to LOW, it´s ok. Then i change it back and is ok. I change it back to LOW and When i change gpio 2 to LOW. First gpio is change back to High and now i can´t change to any state this pin, console returning FAILED. All other pins (2-8) i c...

Thank you for your answear

ESP_Easy_mega_20220427_display_ESP8266_4M1M
ESP 8266 Wemos D1 development board
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I2C tools print Adress: 0x20 Support device: Switch input - PCF8574
Not any other I2c device use only PCF8574

Hi guys, I have same troublesh with ESPEASY and PCF 8574. It all look good but when i send command PCFGPIO,1,0 its ok and pin in LOW and output relay is on, but when i send other command PCFGPIO,2,0 output pin 2 set to LOW but pin 1 set to HIGH. why? every when i change state of other pin privious p...