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[SOLVED] Arduino nano project Arduino radio controller

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gaco16

gaco16

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I have a question about this schematic.
sch_1.jpg
How to connect 5v and Vin pins from Arduino?
Do I need some external power supply?
I see there is 3,3v and 12,6v, but where to get 5v?
 

Hi,

(in my eyes this is no schematic)
It seems this picture is somewhere from an internet project.
I recommend to read through this internet article and/or contact the author.

Klaus
 

KlausST said:
Hi,

(in my eyes this is no schematic)
It seems this picture is somewhere from an internet project.
I recommend to read through this internet article and/or contact the author.

Klaus
Click to expand...

Thanks for your reply.
Yes, it's from electronoobs, open project.
I've tried many times but didn't get any answer.
 

Arduino Nano has on-board 7805 voltage regulator and can be supplied with 12V. Other 5V circuit can be supplied through Arduino if the current consumption is low, e.g. no display backlight.
 
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    gaco16

    gaco16

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That means that I can connect Vin port to 12,6v directly?
 

Datasheet spec is 7-12V, but 7805 can stand much higher voltage. Problem is regulator power dissipation, you can't supply large external load from Arduino nano 5V output. I would try and check the regulator temperature. It has overload protection, no risk to burn it.
 
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    gaco16

    gaco16

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FvM said:
Datasheet spec is 7-12V, but 7805 can stand much higher voltage. Problem is regulator power dissipation, you can't supply large external load from Arduino nano 5V output. I would try and check the regulator temperature. It has overload protection, no risk to burn it.
Click to expand...

Thank you for help! I will try to connect 12,6v to Vin port on arduino nano. I've just found few similar projects, they have the same solution.
 

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