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No Frills PCB Brings USB-C Power To The Breadboard
(hackaday.com)
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this post was submitted on 07 Jan 2025
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Personally I just have an old micro USB cable I cut the end off of and soldered solid-core wire to. Just plug the USB-A end into a battery bank and the wires into the breadboard rails and you've got a stable 5V supply. I rarely needed 3.3V on a breadboard, but when I did I usually had a 5V to 3.3V voltage translator already on the board which was enough to get by.