hello im new to arduino can you help me understand something?

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1

Hello
Im new to arduino i dont have any idea on electronics or programing

I brought one arduino nano and make it work for what i need but sometimes it start working wierd
i power it with cell phone charger

and the spec of the arduino in ebay is this is the same on arduino official site

  • Microcontroller: Atmel ATmega328
  • Operating Voltage (logic level): 5V
  • Input Voltage (recommended): 7~12V
  • Input Voltage (limits): 6~20V
  • Digital I/O Pins: 14 (of which 6 provide PWM output)
  • Analog Input Pins: 8
  • DC Current per I/O Pin: 40 mA
  • Flash Memory: 32 KB (of which 2KB used by bootloader)
  • SRAM: 2 KB
  • EEPROM: 1 KB
  • Clock Speed: 16 MHz
  • Dimensions: 0.70” x 1.70”

The thing I dont understand is this
input voltage (recomended)
and input voltage (limits)

my question is? im not givin enough power?

2

"i power it with cell phone charger"

How did you connect the phone charger to the Arduino?

What voltage is the phone charger?

If the phone charger is 5V, you cannot plug this into the Nano Vin pin as it needs at least 7V.

You can connect a 5VDC power supply to the 5V (Vcc) pin of an Arduino but you should not have it powered by the PC USB plug at the same time.

3

Thank you very much for your time.

the phone charger is 5v and hook up to vin pin (30) and ground pin (29)

and i dont know which pin is 5v (vcc)

thanks for the heads up.
message sent to mod..

thanks again :slight_smile:

4

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5

larryd:
You can connect a 5VDC power supply to the 5V (Vcc) pin of an Arduino but you should not have it powered by the PC USB plug at the same time.

Why do you say that? :astonished:

Here is the circuit of the Nano.

6

Thanks for this, however, following this rule will prevent new people from running into problems if they think they can do it with ‘all’ Arduinos.

IMO, when it comes to new users it’s better to generalize as they may think they can do this with all Arduinos ex: pro mini.

7

Thanks @Larryd

i'm sorry for the late reply
I will give a try with 5v (vcc) pin,
thank you so much for the help.

8

To be clear, as Paul__B points out you could power the Nano from the 5V pin and have the USB connector plugged in at the same time to a PC.

However, I suggest you not do this as there are Arduinos that this power configuration will result in problems.

9

larryd:
IMO, when it comes to new users it’s better to generalise as they may think they can do this with all Arduinos ex: pro mini.

Eh? I don't follow. The Pro Mini does not have a USB jack. :astonished: What are you saying?

"Generalising" can cause a lot of troubles!

10

larryd:
To be clear, as Paul__B points out you could power the Nano from the 5V pin and have the USB connector plugged in at the same time to a PC.

However, I suggest you not do this as there are Arduinos that this power configuration will result in problems.

Ok, thank you, to be safe i will not goin to do it,

and now how can i close this thread, my project is working properly.

now that everything is working, i'm thinking to start building my own arduino useless box or arduino shy box :slight_smile: i never have work with electronic or programing before, its kind the fun trying to do something new, the good thing is that youtube has some stuff for free.

Thank you very much, happy holidays in advance

11

Paul__B:
Eh? I don't follow. The Pro Mini does not have a USB jack. :astonished: What are you saying?

"Generalising" can cause a lot of troubles!

No it 'doesn't have' a USB jack, the problem comes when you plug in the FTDI cable, but you knew that. :wink:

"Generalising" can cause a lot of troubles!

When it comes to inexperienced people you really need to be cautious as they tend to assume if it's safe to do it on this device then it must be safe on other devices too.

12

Lodvg:
Ok, thank you, to be safe i will not goin to do it,

and now how can i close this thread, my project is working properly.

now that everything is working, i'm thinking to start building my own arduino useless box or arduino shy box :slight_smile: i never have work with electronic or programing before, its kind the fun trying to do something new, the good thing is that youtube has some stuff for free.

Thank you very much, happy holidays in advance

Have fun, the Arduino can open up a whole new area of enjoyment.