i looking to buy a few more arduinos and I am wondering: How many arduinos can be run from one pc usb port that has a splitter hub on the end of the cable, all externally powered by a separate 9v psu?
I need to install them inside a chassis. So i shall punch a hole for one usb port in the metal. and thought i could use a small usb hub inside the chassis to make more ports for the arduinos. ( just so there is only one usb port that needs to be punched in the chassis/aluminium)
each arduino will have 2 x pwm and the rest of the channels ins and outs. (with no analogue ins)
i just wonder how many arduinos a single usb port on a pc can take before either the line gets clogged up with data or a port blows up or melts. : P
thanks for your help.