@felmue said in Cant compile M5ez.h: Hello @EricR without downgrading the Arduino ESP32 framework (e.g. using v2.0.3) I was able to compile M5ez with the following three modifications. In M5ez.h disable WPS by replacing#define M5EZ_WPS with #define M5EZ_WPSx. In M5ez.cpp replace info.disconnected.reason with info.wifi_sta_disconnected.reason. In M5ez.cpp replace SYSTEM_EVENT_STA_DISCONNECTED with ARDUINO_EVENT_WIFI_STA_DISCONNECTED. Thanks Felix Thanks! Just like Crazyhorse I came back to my M5 after about a year break. Your info saved a noob days of misery!!!

Hi Vielen Dank für die Antwort bin mittlerweile einen Schritt weiter. Aber sobald ich den Button drücke kommt jetzt zuerst ein A und danach tauchen lauter 255 auf und der Drucker druckt lauter Chinesische Zeichen.

@chriszang and another update. So I am happily working on my CAN receiver sketch and just noticed that I forgot to press the button that grounds INT-output of the mc2515 but the upload still worked. Gave it another try (w/o pressing the button) and it's still working - weird. Then I swapped this COMMU module for my 2nd COMMU Module and here the upload doesn't work. My explanation is that the grounding of the mcp2515 INT-output basically created a short circuit in the transistor that controls this pin and eventually burned it out. Not a big problem for me as a) I am not using interrupts in my sketch b) I have a 2nd COMMU unit I just wanted to warn you guys that grounding the INT output has unintended consequences.

Hi FunkyFab interesting... Thanks for sharing. Glad you got it working again. Cheers Felix