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@Trumpkin.First of all thanks for your comment. I will recommend everyone to design their own(unique) MCU Board. And post the schematic in the forum. I will post mine too. It will help us to correct each other.
@Webbot. Yea, you are right. I should have been more careful about "the surge". I don't have enough idea about it and when it can be happened. And couldn't the Voltage Regulator LM2940 protect the circuit against surge? Could you please refer me any link that has enough info about surge and protection (causing by servo)?