Hello
I have issue with acceleration measurements accuracy. The MPU6050 measures acceleration equal 1.23g on Z axis for device that stays with no any acceleration in horizontal position (aligned by a tool). I expect value closer or equal 1g. I have deviation 23% from expected value. It is too much for my task.
The MPU6050 is placed on my own PCB. I have checked 6 PCBs and have same issue. I have no issue If i use mockup with GY-521 module. Mock up is breadboard with ESP32 and GY-521 modules. The code is same on my own PCB and mockup.
What are possible reasons ?