I looked at the pinout and didn't see anything that mentions pin6 is connected to flash. Where can I find that? Is pin6 normally not usable as an input? Any other pins I should avoid?

I have a VERY simple LED sketch I was working on because I'm having these weird issues occur. Here is the sketch. #define LED_BUILTIN 2 int button = 6; // push button is connected int temp = 0; // temporary variable for reading the button pin status void setup() { Serial.begin(9600); pinMode(LED_BUI...

Thank you for your response. I should have been more detailed in my initial post. Let me try to rectify that here: I'm making a custom game and display for my friends/family/kids. It's something that already works using Arduino Mega's but there are two problems with it currently. 1) I haven't tried ...

I have a problem I need input on. I have a simple project that (will) use 2 esp32 modules to control some things. There is a MASTER esp32 that has some physical buttons and a SLAVE esp32 that just displays info. The info is two integers of positive values less than 100. The master needs to send this...