The output from the PC817 module is High when activated by a sensor.
The input on the micro requires a pull down not a pull up command.

 

The output from the PC817 module is High when activated by a sensor.
The input on the micro requires a pull down not a pull up command.

It WORKS thank you!

 

The output from the PC817 module is High when activated by a sensor.
The input on the micro requires a pull down not a pull up command.

So I decided to work on part two of the project where I connect a 3.5" TFT ILI9488 screen to the ESP32 to read the states of the pins (from the sensors) and display them onto the TFT.. But I have come to a dead end on why I cannot get past the white screen. Is that a question I can ask here on this forum if I provide what I have so far as far as the wiring, code, and what I am trying to do?

 

So I decided to work on part two of the project where I connect a 3.5" TFT ILI9488 screen to the ESP32 to read the states of the pins (from the sensors) and display them onto the TFT.. But I have come to a dead end on why I cannot get past the white screen. Is that a question I can ask here on this forum if I provide what I have so far as far as the wiring, code, and what I am trying to do?

Since this is a different problem, you should start a new thread.