So I'm trying this simple project to have serial communication between Arduino Uno and ESP32. There are no errors when uploading the code ... ... <看更多>

I'm working on something similar at the moment. Not a complete answer put some thoughts: Have you considered that the Uno is a 5v board and the ESP32 is ... ... <看更多>

ThingSpeak Communication Library for Arduino, ESP8266 and ESP32 - GitHub ... Arduino GSM 14000; Arduino Uno WiFi Rev2; Arduino Yún (Rev1 and Rev2) ... ... <看更多>