Dear Sir,

I bought a turtlebot3 and tried to add an i2c direction sensor, but it didn't work.

(

I connected the SparkFun MAG3110 (*1) to OpenCR's Arduino port 14 and 15 and executed the provided sample files, but the output from Arduino Uno and OpenCR were different.

*1 SparkFun Triple Axis Magnetometer Breakout - MAG3110 - SEN-12670 - SparkFun Electronics

)

So I read the OpenCR manual and noticed that the ROBOTIS shop description does not include I2C in the communication circuits, while the ROBOTIS e-Manual description includes Digital I/O I2Cx1.

Which is true?

Also, I would appreciate it if you could tell me how to use I2C with OpenCR.

Thank you very much.

Hi,

You may refer to the thread below regarding the use of I2C(wire) on OpenCR.

https://community.robotsource.org/t/wire-library-on-opencr-wire-library-updated-to-use-hardware-i2c/1444

Thanks!

Thank you for your comment.

After reading your discussion, I understand that OpenCR's I2C is implemented.

I have also confirmed that i2c is working by running other i2c devices.

I am going to investigate the problem of the MAG3310 direction sensor operation, including other causes.

Thank you very much.

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