Hi,
I'd like to have I2C communication between Arduino DUE and Arduino Pro Micro (5V version). The 3.3V voltage of DUE is a compatibility problem on I2C Bus??
Thanks,
Bruno Barbosa
Hi,
I'd like to have I2C communication between Arduino DUE and Arduino Pro Micro (5V version). The 3.3V voltage of DUE is a compatibility problem on I2C Bus??
Thanks,
Bruno Barbosa
No. You can connect the I2C pullups to 3.3v and both sides will work. It's not going to be reliable for cable longer than 10cm.
It appears the Pro Micro doesn't have any built-in pullups, so the ones on the Due board (for the main I2C pins) will be OK.
Hi Morgan,
Final questions:
There are any chance of permanent damage in DUE because the working voltage of Micro is 5.0V and Due 3.3V?
The I2C bus will work at 5.0V?
And finally, my cable have 25cm is that a problem in I2C bus?
Thanks again.