Krassegrand wrote:About the power supply, can I run it from a USB charger?
Many people do, but the quality of the output is important.
a standard USB phone "charger" normally outputs 5v but the amps rating will vary quite widely, the cheaper versions won't manage to reliably output the correct voltage at higher current flows. a decent tablet USB "charger" or a high end smartphone "charger" should be fine.
I keep saying "charger" as a charger doesn't have to meet the same specification for power supply as a USB power supply has to meet.
Building Management Systems Engineer.