# What is the maximum voltage permitted by an arduino?

Hi guys, how are you all ? I trust Jesus the Almighty God to keep you all safe as He has done for me, Glory be to Him. I am working on a project using the arduino that requires the arduino to be able to move around but not always be connected to a computer. I want to put an external power source but I am not sure the maximum voltage the arduino can handle. Please assist me by telling me the maximum amount of voltage an arduino uno can handle. May God bless all of you.

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jfryar3027222 days ago

Natively, the chip that is on most Arduino's can handle about 6V max, but are rated for 5V. Having said that, Arduino's have a built in voltage regulator that can handle about 12V.

Basic answer: Arduino's can handle 12V.

Quick grammar question: Did I use "Arduino's" properly? Is it with or without an apostrophe? If I didn't, let me know, as I need to learn.

seandogue1 month ago

Power: 12VDC

I/O: 5VDC

iceng1 month ago

Rhetorical, does God transcend time ?

Well the Arduino does Not, but it can permit up to 20VDC for a very short time which is determined by the type of voltage regulator on the PCB not melting solder.. That euphemism of melting solder is real because the regulator is just a smart resistor in series with the processor and works by wasting the excess voltage greater than the Vcc by turning it into heat..

As Watts = (Vin - Vcc) x Current

Example W=(20-5)x200ma=3watts

Example W=(9-5)x200ma=0.8watts

1 month ago

As far as GOD is concerned you must assume so - all knowing and omnipotent suggests any such a being designing a system would build in a back door so they can access all areas.

1 month ago

Such a Being has no need for back doors.. He can gain access very much like the instruction BRANCH WHEN NEEDED !!

Downunder35m1 month ago

Take a well filtered 12V supply and you are good to go.
If battery opt for a deep cycle type.

Simple-Circuits1 month ago

Operating Voltage: 5V

Input Voltage (recommended): 7-12V

Input Voltage (limit): 6-20V

This is for the Arduino UNO

https://store.arduino.cc/usa/arduino-uno-rev3

1 month ago

Yes. you have to be caretul that external loads on the Arduino don't pull too much current, because the heatsinking of the regulator iis inadequate.

rickharris1 month ago

The arduino AFAIK has an on board 12 volt regulator so perhaps 12 volts input

The data sheet will tell you more than you want to know.

http://forum.arduino.cc/index.php?topic=16384.0

1 month ago

Should say 5 volt reg