I want to have one master NANO talk to 4 slave NANOs thru i2c.
I have found Grove connectors that could do the bill for me. The problem is that they have the following assignments : SCL, SDA, VCC, GND. In an other post, I read that it would induce crosstalk.
Since I am designing the PCBs for both the master and the slaves, I can rearange the assignments.
I would like to know what is best : VCC, SDA, GND, SCL or GND, SDA, VCC, SCL
In various web pages I could read, some suggest to have GND between signal strands as others suggest to have VCC betwwen signal strands.
Anyone used the Grove system succesfuly (without crosstalk)?
The maximum distance between the master and any slave will be less than 30cm (12")
Some sites also talk about a 4.7K pullup resistor, but I don't know where it has to go in the design.
Thanks for your insight.