I2c sonar & i2c bus speed - how to


I want to connect a Maxbotic sonar to my Navio2. As I understand I need to lower the bus speed to 400 khz which is possible/feasible with Navio2.
I tried to add a file with the content “
options i2c_bcm2708 baudrate=400000” like it is described here:

Enabled camera, SPI, I2C and set its speed to 1MHz (if you’d like to
connect a sensor with lower clock speed, edit the baudrate option in

But this did not help.

Could you please help me?

Hi! Sorry, outdated info in the docs, I’ll update it. I2C speed can now be set using a device tree parameter.
This tutorial should explain it.

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