JBtek breadboard power supply module Review

Disclosure of Material Connection: I received this product for free so that I could provide product feedback to the company and post a product review. I was not required to write a positive review and I do not rate products higher than they should have been. I am disclosing this in accordance with the Federal Trade Commission's requirements.

I recently received a JBtek breadboard power supply module for a product review. The packaging just included the module itself, two of the pins were slightly bent but it was an easy fix.

Top of power supply module

Bottom of power supply module

Power supply module mounted on breadboard

Side shot of power supply module on breadboard

To provide power to the board you can either use the USB port, or the barrel socket DC jack.  Each of the two sides/rails of the power supply can have 5V or 3.3V supplied to it.  The board also has a simple on/off power switch, and a green LED to indicate if the board has power or not.

You can use 5V on one rail and 3.3V on the other providing flexibility for your project.  The board also has 8 pins ( four ground, two 3.3V and two 5V ) for additional connectivity options.

Close up of power supply module mounted on breadboard

Using the power supply module to test a JBtek relay board

Using a USB power supply, I tested the voltage output and read the following:

5.4V on the 5V rail (no load)
3.42V on the 3.3V rail (no load)

The board as a 12V max, so I would suggest not using a random 12V power supply you grabbed from another device as it may exceed that limit.  Also, I would assume you should only use one of the two inputs at a time.

Here are the main points I noticed about this product:

Input options: You can use a USB or barrel socket plus to power the unit, just make sure you stay within the limits.

Output options: Each of the two rail outputs can be configured to output 3.3V or 5V, and you can use both 3.3V and 5V at the same time.

Other Features: The board includes an on/off switch to control your project, a power LED, and additional pin header with 3.3V / 5V and ground available for connection.

Bottom line: If you do projects on a breadboard this power supply is a great way to supply power.

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