I have a board that I made for a project that uses a 5 volt Arduino pro mini, and includes a connector to go to a 5 volt sensor via I2C. I included pull-ups on both pins. Now I want to use that board to connect to a Qwiic board, using level converters for the I2C pins. Is it ok that the pull-ups are between the processor pins and the level converters? In this case, should I cut the pull-up traces on the Qwiic board that’s on the other side of the level converters? My instincts tell me that it shouldn’t matter which side of the level converter the pull-ups go on, but I would appreciate some confirmation.
Thanks!
many level converters have already pull-up resistors included on both sides in order to work proper. But that depends on the schematic of the level converter. You can always try to see whether it works without any. Else indeed I would not expect it would matter, but I would have a preference for the sensor side as they are normally / often already installed on the sensor board
Thank you!