I have an 11.1 volt, 5000mAH battery that I am using to power a project, but I am not sure if an arduino can handle that amperage. I have both an Uno and a Nano that I could use if one can take more amps than the other. I just want to plug a wire leading from the battery into the Vin pin on the arduino. Does anyone know the max amps an arduino can take through the Vin pin?
Thanks!
They will only pull the Amps that they need to run. What to watch is the Amps used by the pins you connect to.
Also watch the voltage. That's what can cause damage.
Well I am working on an Arduino controlled RC car, and I have a pretty large 12V motor connected to an esc which is connected to the battery. The red on the esc is damaged so I cant plug the arduino into that. I was thinking of adding a wire right after the battery to the Arduino but would my motors amperage draw affect the amps going to the Arduino? if it doesnt make sense This below is pretty much what it would look like and the arduino would have some wires going to the data input on the esc.
Battery _______________________ESC__________Motor
|
|
Arduino
That will work if you connect the 11.1V battery to the DC jack on the Uno. Center pin is +. There may be noise on the DC from the motor, wait and see. If so, then you may need some additional components.
red_rider6847:
would it not work on the Vin pin on the nano?
Yes.
sorry, i wrote my previous post wrong... could I wire it into a Vin pin on my nano?
steinie44:
There may be noise on the DC from the motor, wait and see. If so, then you may need some additional components.
A valuable 'heads up' for the OP... nice.
karma++
could I wire it into a Vin pin on my nano?
Well... yes, but the regulator may get hot. It depends on how much current the Arduino has drawn from its outputs.
The Vin pin runs to a small 78M05 voltage regulator.
I have an 11.1 volt, 5000mAH battery that I am using to power a project
That 5000mAH is a capacity rating, it is nothing to do with how much current it can supply. All that it is saying is that at some current load on the battery that is not specified, you can draw that current for a certain time. When you multiply that current by the time the battery supplied that current you will get a value of 5 Amps per hour.
That does not mean it will supply 5 Amps for an hour. It could say only supply 2.5 Amps for two hours or 10 Amps for 30 minutes. It tells you nothing about the absolute numbers, just the product of current draw and time.
The "current that is not specified" is chosen by the manufacturer to produce as big a number as possible. Any other current will give you a smaller number. Which is why in practice you never get anywhere close to that capacity.
Yes.i'm using the 12vdc/30 ampere to the Uno power jack.My Uno work good.
The red on the esc is damaged so I cant plug the arduino into that
Sounds rude . . . doesn't it?
I have a 5 volt 4 amp plug, would it destroy my nano if I power my project with it?
tarbear123:
I have a 5 volt 4 amp plug, would it destroy my nano if I power my project with it?
5 year old thread!
Who cares how old the thread is? The question is even on topic.
No, it is fine to use that supply. The Nano just needs five volts, and it pulls the amount of current it needs. The supply could source as much as 4 amps, but the Nano will only take a tiny bit of it. It would be good to read up and understand what Ohms law is.
Who cares how old the thread is?
We do.
Please read this:-
How to use this forum you might find out how we like to work here.
The supply could source as much as 4 amps, but the Nano will only take a tiny bit of it.
Unless you make a mistake and then things burn.
I think the idea is to help each other, not sling mud at each other. That's the rule above all the other rules.
amdkt7:
I think the idea is to help each other, not sling mud at each other. That's the rule above all the other rules.
Rubbish where does it say that in the rules here?
The idea is to help people who want / need help. In order to do this in the most efficient way we have decided a set of rules which some people think they can ignore.
Others tend to get shirty when this is pointed out and waste even more time winging about it. If you don’t like it you are entitled to all your money back for the advice you have been given.
I like to try to help people. It's the reason the forum exists. The rules are there to make it more productive, and I do try to follow the rules and I try to help other people without putting them down.
amdkt7:
I like to try to help people.
Me too. Just look at the respective post counts and say who likes doing it more?
Quite honestly I can’t see why you are taking offence on behalf of some one else. One could speculate that this is an increasing trend among the younger end of the age range on the Internet.
I don't have time to rack up a post count. What does that mean anyway? Anybody can do that if they have a lot of time. You did not help the guy who brought this thread back to life. I tried to. I guess I could run up my post count by responding to you. I am stopping here.