Breadboard power module

In some of my electronic tutorials, I connected the circuit to a 9V battery because it is easy to get started and easy to find.

But this is not optimal. The first is because the battery will deplete over time and cannot provide the nominal 9V.

A kindBreadboard power moduleAccept input via inputBarrel jackProvided by battery, 12V adapter or any other source, and provide 5V or 3.3V pulling force to our circuit according to our needs. We will introduce Arduino to our circuit soon, and all of our Arduino circuits will work at these voltage levels.

There are many different products, this is the power module I want to show you, it is part of the Elegoo kit I recommend you to buy, but it is also sold by other brands in the same shape and characteristics, you can search for "Arduino power supply" Check out some alternatives on Amazon:

The accepted input voltage is 6.5V-9V DC. The maximum output current is 700mA.

We connect it directly to the experiment board:

Then, you can independently determine the tension to be applied to the breadboard power cord on each side: 5V, in this case:

Or 3.3V, by changing the position of the jumper:

You can also turn it off by placing the jumper in the middle:

Then, you can use the barrel jack input to connect to an adapter from 12V to 220V:

Press the gray button to turn it on. The LED will also light up:

The USB port does not exist and cannot supply power to the power module. If needed, it can power USB devices (such as Arduino).

There are other output pins on the top, which can provide GND, 5V and 3.3V when needed:


More electronic tutorials: