When I'm about to plug four Pi Zeros into one Pi Four
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Well, uh, I hope your power supply can provide 3 Amperes.
Also you need to explain your network architecture. Does your Pi 4 connect to the internet using WiFi, and provides internet to Pi Zero? Your should see Pi Zero as USB-Ethernet card on your Pi 4, and you should be able to create a shared connection on this card from Pi 4 system settings if you connect a monitor and a mouse to your Pi 4.
The end goal will be to have none of the Pis connected to wifi; this will be a closed unit. For now, both of the Pis I'm testing with are connected to my wifi.
I want to communicate over USB, and it seemed like ethernet-over-USB + regular web services are the easiest way to do that.
The goal is to have each Pi Zero be able to communicate with the Pi 4b and the Pi 4b be able to communicate with each Pi Zero.
When you say I should see it as a USB-Ethernet card, where would I see it? I only see eth0, lo, and wlan0 when I use ifconfig -a
on the 4b.
EDIT: Oh my god. My cable was bad. I swapped cables and now I can see it.
👍