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Topic: Arduino Nano consumption 60 mA (Read 667 times) previous topic - next topic

jeromejaune

Hello everyone,

I try to supply my arduino Nano with a 7.4 v battery.
I read on the forum there are two options :

- connect the 7. 4 V voltage on the Vin and gnd pin but the regulator of the arduino Nano is not very efficient

- connect a better regulator or something like this before the arduino and connect the output of the best regulator on pin 5v and gnd

But I try this two options and both cases I have a current of 60 mA enter in my arduino

How improve that I read on the web that a arduino Nano consumption is about 20 mA and I m far of this result

Thx

jeromejaune

Finally I test with another arduino Nano and the current is 30 mA so the problèm is my arduino Nano

I will send a message to the seller

westfw

Quote
I try to supply my arduino Nano with a 7.4 v battery.
... but the regulator of the arduino Nano is not very efficient
- connect a better regulator ... connect the output of the best regulator on pin 5v and gnd
But I try this two options and both cases I have a current of 60 mA enter in my arduino
60mA isn't too unreasonable.
If you have a 7.4V battery, ALL "linear" regulators (external, or the one on the Nano board) will be approximately equally inefficient.  To do better, you have to have a more complex (and probably expensive) "switching regulator", and you'd have to be measuring the current out of the battery, rather than into the arduino.  A 90% efficient switching regulator should give you something like 45mA out of the battery while still putting 60mA into the Nano.


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