Hello, i just got a Wemos D1 R32 ESPduino32 (ESP32 in Arduino UNO style) and the pins aren't like 2,3,4 it's io23,io24,ioXX. How do i understand which pin is which and since my potentiometer is broken how do i adjust contrast aside from using Analog A0 or AX pins with a potentiometer?
It looks a bit like this:
and the lcd is just a 16x2 lcd that i ripped out of an elevator control board.
A pinout diagram is on this link (just scroll down the page).
For the contrast pot, perhaps some others may have a suggestion.
A couple of resistors: a 4.7k from control to +V, and a 470 from control to Gnd.
The best solution would be to replace it. However, if that's not an option, you could rig up some resistors as a workaround to get it functioning.
Oh thanks, i finally did my web server.
I found that the V0 pin can be powered with just 1k, but hey, i'll keep that in mind.
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