I am playing / built a mini robot of sorts - made from a 12v dc NUC slimline PC, 2x 7.5v 500ma servos, 2x 7.5vdc IP cameras , a 3vdc laser pointer and an arduino. I've got 4 different power supplies powering it (one for the NUC, one for the servos and one each for the IP cameras). The arduino takes it power from the USB port on the NUC.
I am a software developer and not an electrical engineer, hence the question:
Would it be possible (or a good idea) to buy some dc-dc stepdown converters (1x 12v to 7.5 for the servos and cameras, and 1x12v to 3v for the laser) , wire these on parallel to the 12 supply and power lot from the one supply?
I'd need to make sure the 12v supply has enough capacity to power them all/get a bigger one. Although these are cheap (as are the converters) so would be willing to get the kit if it means one power supply for the lot.
Possible? Or oversimplified or plain dangerous?