I’m thinking there will are two primary ways to integrate the nRF9160 to another feather MCU like the Adafruit Adalogger (M0 MCU): 1) I could stack one on top of the other, or 2) I could set them up separately and have them communicate to each other via I2C with just SDA. SCL and GND connections.
I’m presuming that in both alternatives I’ll have to set the Master-Slave I2C relationship. I’m thinking at this point the nRF9160 is the slave.
Is there a voltage issue with alternative 1? Which alternative do you think is a better approach? Any other general thoughts?