How to add gnd and 5v pins for arduino?

Question

Batteries

How to add gnd and 5v pins for arduino?
Missing gnd and 5v outputs. Can I buy some modules?

Answer 1

You can use something like Sensor Shield Expansion Board Shield For Arduino UNO

Answer 2

If anything, you do not have to insert each device into a separate 5v and gnd pin.
For do-it-yourselfers, you usually just plug the ground and 5v into special lines on the breadboard.
If you have some kind of heavy load, it is better for it to supply power separately, and not from the arduino.
For example, on this breadboard, these special lines are marked in blue and red. (but if there are none, you can use the usual ones)

Here is an example of a connection:

Answer 3

In principle, a careless mock-up is only suitable for playing around, the nameplate for uno in this case is a redundant and not cheap thing. It’s easier and faster to make a banal splitter, cut the connectors in half and solder a few together, of course, do not forget to isolate the soldering place with heat shrink. Personally, I buy such garbage, but I make it myself using such a set , old blunt wire cutters and wires that are available.
If you really want a shield, you can come up with your own based on such a board

Answer 4

Cut off the plug from the old (or new) phone charger and use it. There is enough current with the head.