Yeah..unless the internet took a dump the world is full of of rs-232 Sim reader/writers. Satellite hackers predate USB. I might be more impressed if the Arduino was doing the heavy lifting and no ...

19 thoughts on “ Secret Serial Port For Arduino/ESP32 ” jawnhenry says: August 17, ... Before getting my ESP32 I read documentation and looked in Github at both ESP-IDF and Arduino-ESP32.