Arduino Uno R3 Board

Introduction: Arduino Uno R3 Board

About: I'm Electronic Engineer, Passionate about Electronics and PCBs. Since 2 years I'm working on the electronics projects and products design. Till now completed more than 100 Projects with few product prototypes.…

Hi everyone, I'm Mr. Vaibhav.

Happy to share one more best design of my PCB work, That is ARDUINO UNO R3 Custom Board.

Currently we can observe that Arduino sounds like anything and anywhere. Its a basic component in the tool kit. We as engineers believe that Arduino is best prototyping compact device or development board for us. So what if we need to do project for industry and other companies. Is it that Arduino is fine ?

My experience in electronics says NO!!!!

Because Industry need Custom board instead a General one.

So I though of making One custom board for my project and its successful. So here I'm sharing all information and data believing that this is useful for viewers !

Step 1: Software Setup.

Proteus V7 is the software which I'm using to this Board!

Proteus provided user friendly environment to beginning PCB designer, which helps us to design custom board.

Collect the software from Online and Install it in your PC and Open it then start your design !

Step 2: Circuit Diagram and Pin Connection.

Circuit Diagram is the only thing that you all need, And it is given in these figures clearly. In Proteus we have inbuilt library for all the components required, so just Pic part and drop it.

Please find the connections properly because I used Bidirectional IO's instead of wires.

Values of Each Components is specified and indicated with diagram.

Step 3: PCB Editor and It's Usage

We all Knew that PCB editor is what ultimately we need, We have schematic means we need to convert it into PCB layout which is done by PCB editor.

This is also quite simple for user, because of its user-friendly custom settings. Make use of this to do your PCB.

Converting Schematic to PCB is just 2 steps,

Refer the 2nd image, Again we have shortcuts also..

Directly you can press ALT+A to move to PCB editor.

Step 4: Arduino Uno PCB Board.

This is How PCB is designed, This may take a while for you but its quite easy one.

Please find the correct placement and routing of track before finalizing the design.

Top layer and bottom layer are shown in Image for more information comment on this , I will get back to you soon.

Step 5: PDF of PCB.

All PDF files, You ca use these files for etching or screen printing. These developed by me only so if an problems feel free to ask me !

Step 6: Final Circuit PCBs.

So this is Final 3D model of my PCB which is expected after manufacturing.

And that is what i got when i done with MIT's PCB prototyping machine.

Thank you


Mr. Vaibhav

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    Question 2 years ago

    Dimention of ardnivo bord?


    2 years ago on Step 6



    Question 3 years ago on Step 5

    Can I Have The Project File Or Component list ??


    Question 4 years ago on Step 2

    Dear vinabav,
    I have drawn the circuit as per in Proteus 8. When I run simulation it shows an error message of not specification package for J1, J2, J3, J4, & J5. Could you Pl short out this?

    Eric Brouwer
    Eric Brouwer

    5 years ago

    Nice design.

    There is one problem on your design. Pin 21 (AREF) must NOT be connected to the +5V rail. Leave this pin unconnected.

    The default Arduino IDE sets the A/D reference to:


    In this mode, pin 21 is set up as a voltage output pin, the chip will OUTPUT a voltage very close to your supply voltage on pin 21. With this pin also tied to +5V rail, the A/D will work, but might not be as accurate.

    To ensure correct A/D operation and accuracy, you must set your A/D up on this board as follow:


    In this mode, pin 21 is set up as an INPUT, and the voltage applied to this pin (+5V) will be used as your A/D reference voltage.

    With your PC Board setup , you will also not be able to make use of the internal 1.1V reference available on the chip:


    In this mode, pin 21 is set up as a voltage output pin, and OUTPUT 1.1V on this pin. But with pin 21 already connected to +5V, you might cause damage to the internal 1.1V reference. Your A/D results will also be totally unreliable.

    I hope this will assist you with your board design.



    Vaibhav K Sugandhi
    Vaibhav K Sugandhi

    Reply 5 years ago

    Hi Eric,
    Nice to see you here,
    Yes whatever you said I agree, But when i did this prototype and implemented with same circuit then i had not done anything like what you said.
    So my vision is to create easy way to do the small circuits for students and entrepreneur. This is cool one for trial and error.But for long time execution and durable design may need whatever you said.

    Thank you
    Mr. Vaibhav