Hi @ALL Now it´s 2022 and there´s still a problem with Firmata. I got my Nano Every today and have changed the boards.h. I´m trying it with: elif defined (AVR_NANO_EVERY) || elif defined (ARDUINO_NANO ...

Arduino: 1.8.5 (Windows 10), Board: "Arduino Nano, ATmega328P (Old Bootloader)" libraries\MPU6050\I2Cdev.cpp.o (symbol from plugin): In function `I2Cdev::I2Cdev ...