Ok, thanks for that suggestion.
It will unfortunately only work, if ESP32 core isn't installed via Boardsmanager

Well I do not use a library apart from Kalman.h which definitly can not be the problem... I got my MPU6050 working with I2CDevLib and the MPU6050 library by Jeff Rowberg with the following changes: https://github.com/jrowberg/i2cdevlib/pull/367 Then because it still did not work I replaced #ifndef _...

I am trying to get a MPU6050 working with ESP32. The following code works, with a minor adjustment (see comment in the code) with an Arduino UNO. I ran the I2CScanner and detected the MPU6050 with the Adress 0x68, which is the default one. The connections should be right: VCC -> 3V3 GND -> GND SDA -...

Well there is a somewhat strange fix to this:
Simply connect a 3V3 source to the ESP32 3V pin and the corresponding GND to the ESP32 ground (I use an Arduino or FTDI breakout) while still powering the board via USB, this made it possible for me to use WiFi

I have the same DoIT Board and whenever I start WiFi, the brownout detector is triggered. I have tried connecting a capacitor between 3.3V and GND, but that did not help anything. It is a rev. 1 btw. and the ESP32 Chip mounted on it, is also rev. 1, I have checked this with that sketch: https://gith...