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by mahfhjtyujrsftg
Wed May 21, 2025 11:46 pm
Forum: ESP32 Arduino
Topic: I2C Issue with MPU6050 – ACK received, but WHO_AM_I always returns 0x00
Replies: 0
Views: 360

I2C Issue with MPU6050 – ACK received, but WHO_AM_I always returns 0x00

Hello,
I'm using an ESP32 S3 with the MPU6050 connected via I2C using manual bit-banging (not using the Wire library).

I successfully get ACKs from both the device address (0x68) and the WHO_AM_I register (0x75), but the returned value is always 0x00.

Could this be due to missing pull-up ...

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