Communication with MPU6050 failed!

ESPHome
1

Hi, Im trying to connect ESP32 Wroom to MPU6050 but with no luck.

the following to the error log upon upload

[16:18:46][C][wifi:318]:   DNS1: 192.168.1.2
[16:18:46][C][wifi:319]:   DNS2: 0.0.0.0
[16:18:46][C][i2c:028]: I2C Bus:
[16:18:46][C][i2c:029]:   SDA Pin: GPIO21
[16:18:46][C][i2c:030]:   SCL Pin: GPIO22
[16:18:46][C][i2c:031]:   Frequency: 50000 Hz
[16:18:46][I][i2c:033]: Scanning i2c bus for active devices...
[16:18:46][I][i2c:040]: Found i2c device at address 0x19
[16:18:46][I][i2c:040]: Found i2c device at address 0x1E
[16:18:46][C][logger:185]: Logger:
[16:18:46][C][logger:186]:   Level: DEBUG
[16:18:46][C][logger:187]:   Log Baud Rate: 115200
[16:18:46][C][logger:188]:   Hardware UART: UART0
[16:18:46][C][mpu6050:085]: MPU6050:
[16:18:46][C][mpu6050:086]:   Address: 0x18
[16:18:46][E][mpu6050:088]: Communication with MPU6050 failed!
[16:18:46][C][mpu6050:090]:   Update Interval: 60.0s
[16:18:46][C][mpu6050:091]:   Acceleration X 'MPU6050 Accel X'
[16:18:46][C][mpu6050:091]:     Unit of Measurement: 'm/s²'
[16:18:46][C][mpu6050:091]:     Accuracy Decimals: 2
[16:18:46][C][mpu6050:091]:     Icon: 'mdi:briefcase-download'

i have tried Address: 0x18 0x19 0x1E

my Yaml code


i2c:
   - id: bus_a
     sda: GPIO21
     scl: GPIO22
     scan: True
sensor:
  
  - platform: mpu6050
    address: 0x18
    i2c_id: bus_a
    accel_x:
      name: "MPU6050 Accel X"
    accel_y:
      name: "MPU6050 Accel Y"
    accel_z:
      name: "MPU6050 Accel z"
    gyro_x:
      name: "MPU6050 Gyro X"
    gyro_y:
      name: "MPU6050 Gyro Y"
    gyro_z:
      name: "MPU6050 Gyro z"
    temperature:
      name: "MPU6050 Temperature"

The hardware was working fine using Arduino IDE C++ coding
Your help would be much appreciated

2

did you try without defining the address? Its optional and defaults to 0x68

3

Thank you.
i just tried that with the same error

  Frequency: 50000 Hz
[17:56:04][I][i2c:033]: Scanning i2c bus for active devices...
[17:56:04][I][i2c:040]: Found i2c device at address 0x19
[17:56:04][I][i2c:040]: Found i2c device at address 0x1E
[17:56:04][C][logger:185]: Logger:
[17:56:04][C][logger:186]:   Level: DEBUG
[17:56:04][C][logger:187]:   Log Baud Rate: 115200
[17:56:04][C][logger:188]:   Hardware UART: UART0
[17:56:04][C][mpu6050:085]: MPU6050:
[17:56:04][C][mpu6050:086]:   Address: 0x68
[17:56:04][E][mpu6050:088]: Communication with MPU6050 failed!
[17:56:04][C][mpu6050:090]:   Update Interval: 60.0s

just spotted that the i2c scanning shows TWO i2c devices, there is only ONE physically connected, any ideas?

[19:10:29][I][i2c:033]: Scanning i2c bus for active devices...
[19:10:29][I][i2c:040]: Found i2c device at address 0x19
[19:10:29][I][i2c:040]: Found i2c device at address 0x1E
4

I havent seen such a thing. Maybe some other users would be knowing. I have seen other posts with the same issue. Maybe you should try tamsota. But you will have to compile your own firmware. Hope you know about it.

https://tasmota.github.io/docs/MPU-6050/

If you want I can share a tasmota.bin file that I tried to compile for MPU-6050… but dont know if that works.

5

if you could share that BIN file that would be much appreciated.
Is tasmota able to control 4 relays too.
is it possible to include the " Digital Motion Processor Enabled"
i have built a 1Kw solar panel sun tracker that moves on two axis’s, X suns horizon angle and Y suns azimuth (from 90 degrees to 270 degrees.
basically i need to be able to read the mpu6050 compare with an API response, then use 4 relays to control two linear actuators.
Many thanks

6

Yes , it can but make sure you select the best pins with esp. If it was esp8266, the below is the list of best pins for output.

image
image1150×775 240 KB

Download bin from this Send Anywhere

If this doesnot work you can compile it yourself, the tasmota webpade has all the docs on it.

7

Finally after much trying I have found the problem and solution.
Its the MUP6050 (GY521)
I have 10 x GY521 units and only ONE works. All units brand new, using esphome.

So if anyone else has this problem, try this solution; buy 10x units and throw 9 away.

8

There must be a bug in the MPU6050 library for ESPHome. Maybe it depends on internal MPU6050 registers that are not being reset properly.

Edit: Continuing the discussion here: MPU6050 component error "Communication with MPU6050 failed!" · Issue #2279 · esphome/issues · GitHub