Skip to content

MMA8451-based accelerometers

Related Config File Sections:

This chips can be connected to I2C and act a tilt and leveler. Available on adafruit (and elsewhere).

Configure using:

  accelerometers: mma8451
    level_x: 0
    level_y: 0
    level_z: 1
    number: 1-29

This will configure an MMA8451 on I2C bus 1 with address 0x1D (29 decimal which is the default for this device). The exact numbering depends on your i2c platform.


The device in the picture is using smbus on linux as i2c platform with an Atiny85-based I2C-USB adapter.

What if it did not work?

Have a look at our hardware troubleshooting guide.

Something missing or wrong? You can fix it!

This website is edited by people like you! Is something wrong or missing? Is something out of date, or can you explain it better?

Please help us! You can fix it yourself and be an official "open source" contributor!

It's easy! See our Beginner's guide to editing the docs.

Page navigation via the keyboard: < >

You can navigate this site via the keyboard. There are two modes:

General navigation, when search is not focused:

  • F , S , / : open search dialog
  • P , , : go to previous page
  • N , . : go to next page

While using the search function:

  • Down , Up : select next / previous result
  • Esc , Tab : close search
  • Enter : go to highlighted page in the results