I can’t get the INA219 to work on my RPi 3b+ ground unit.
I believe all my wiring is correct (see below), but it seems i2c is not working.
During boot, I see
Error: Could not open file
/dev/i2c-1' or/dev/i2c/1’ : No such file or directory.
I found something online about needing to enable i2c on the RPi.
I did run
and enabled i2c in the interfacing options.
But I cannot run
sudo apt-get update
sudo apt-get install -y python-smbus i2c-tools
because the Pi is not connected to the internet, so it cannot install python-smbus. Do I even need to do this?
Any help getting this to work would be much appreciated!