Anyone know of issues using D35 on an ESP32 for the button?
Also, how about using the TxD/RxD lines for I/O when things get tight?
Shouldn’t be an issue…
Here is a neat reference for the pins. I use it all the time, excellent resource: https://randomnerdtutorials.com/esp32-pinout-reference-gpios/
Thanks. Regarding D35, it’s not working for me. I’ll have to dig a bit.
Still not found anything with this. btnpin is not changed/undef’ed in the code and the pin is actually going low. 
Well, it’s working now. No idea what happened.
1 Like