Introduction: Arduino Power Supply Shield With 3.3v, 5v and 12v Output Options (Part-2)


Welcome back to the Part-2 of Arduino Power Supply Shield With 3.3v, 5v, and 12v Output Options. If you guys haven't read Part-1, CLICK HERE.

Let's get started...

When developing electronic projects, the power supply is one of the most important parts of the whole project and there is always a need for multiple output voltage power supply. This is because different sensors need different input voltage and current to run efficiently. So today we will be designing a Multipurpose Power Supply. The Power Supply will be an Arduino UNO Power Supply Shield which will output multiple voltage ranges such as 3.3V, 5V and 12V. The shield will be a typical Arduino UNO shield with all pins of Arduino UNO can be used along with extra pins for 3.3V, 5V, 12V and GND.

Step 1: Fabricated Boards

The image above shows a fabricated PCB board from LIONCIRCUITS. I just uploaded the Gerber files on their platform and ordered my PCB online. The prices were so efficient and also they didn't charge extra for shipping. I received these boards within a week on placing the order.

Let’s starts with the assembly of this board.

Step 2: Components Assembled Board

Get the soldering kit and start placing all the components in the right pads of the PCB Board. The soldering is easy to finish as there are not many components used in this project. When the soldering is finished your board should look like the one shown in the image above.

The above image shows all components assembled on the PCB Board. I have used a 12v DC jack for input supply.

In this Power Shield, the burg pins used are of male to male 20 mm connectors. You can use Male to Female Burg pins depending upon the availability. The 20mm burg pins are suitable for Arduino Shield and fits well for on Arduino UNO.

Step 3: Testing the Power Supply Arduino Shield

It is really easy to test the Arduino shield. Just place the shield on to the Arduino UNO and give it a 12V supply from the input barrel jack. The shield can take an input voltage of maximum up to 34V without damaging the components.

You can check all the output voltage i.e. 3.3V, 5V and 12V using a digital multimeter. If all went good including designing and soldering of the components then you will be able to note down the exact output voltage at the output pins.

Hope you liked this instructable and it helped you!