For this question I will use a tutorial linked below that uses 6 solenoids connected to a raspberry pi model 3B powered by a wall adapter as an example of how something is powered(and works, I dont know how). From my understanding, the wall adapter used to power the raspberry pi model 3B outputs 5 volts at 2.5A, the typical bare board current consumption for a pi 3b is about 600mA so that's fine, but how does it provide enough current for six 5V solenoids that each draw 1.1A of current which is 6.6A total(if they were all on at the same time). Doesn't that exceed how much current the charger can provide? (Sorry if this is a stupid question)
https://www.hackster.io/hitherejoe/braillebox-braille-news-reader-e86060
https://www.hackster.io/hitherejoe/braillebox-braille-news-reader-e86060