rpdom wrote: ↑Sat Feb 09, 2019 9:46 am
DarkPlatinum wrote: ↑Sat Feb 09, 2019 8:28 am
I see many people ask what the limit is... But what I don't understand is what they can do with so many Pi Zeros.
A lot of things.
One of the distinctive things about a Pi Zero, aside from its small size, is the possibility to use it by connecting it to another computer with a single USB cable. Because the Zero doesn't consume much electricity the USB port on the other computer acts as a sufficient power source; because the Zero can work as a gadget the USB cable also functions as a network cable.
For a robot, the Zero allows for a distributed processing approach without dealing with arduinos on one hand or bulky Ethernet switches on the other. For a video wall, multiple Zeros connected through USB is a way to play HD video on many monitors at the same time. For experiments in parallel processing, Zeros can be used to construct a super-cheap cluster. A Zero W can also be used as a combination physical firewall and WiFi dongle for a Windows XP computer. For a programming class, a Zero can be plugged into any Windows computer with a single USB cable and accessed through RealVNC.
As already mentioned, all of the above uses depend on the distinct Zero property of being able to be powered through a standard USB data cable that is also used for networking. No other model of Pi has this feature.