I'm doing a project where I wish to use 5 stepper motors simultaneously. I've ordered these (with driver board included) https://www.amazon.ca/gp/product/B015RQ97W8/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1. I'm using a Raspberry Pi 3B (one with 2x20 pinout).
I've successfully wired two of them with the driver board and I'm controlling them successfully with GPIO. I followed this tutorial which worked first try with them https://keithweaverca.medium.com/controlling-stepper-motors-using-python-with-a-raspberry-pi-b3fbd482f886 However, as the Pi only has two 5V pins, as far as I can tell in my complete and utter electric noobness, to control the other three I'll need some other power supply, then hook up GPIO and ground pins (for which the 2x20 has enough remaining since I only need 4 GPIO pins and 1 ground pin per driver board) like normal.
Is this correct?
If so, are there any recommendations for external power supply for the motor (or if I can DIY one from a battery or something)?
I also have breadboards available if I need to do anything with them.