Arduino nano, dfplayer, LED circuit

Projects General Guidance
1

Hi,

I want to ask if someone could guide me if my little stup is ok like this or not?

I have the Leds circuit with the leds and want to connect the dfplayer and the arduino to my 5volt power suply(phone charger 5V 1500maH)

Do I just have to connect the 5 Volts of the led to the arduino and the dfplayer onto the red positiv wire goind from the arduino?

Or what is the best way to make the 3 tghings opperate from this 1 power source?
Cause i dont want to have 3 power supplys coming from the wall.

The 6 LEDs on the arduino are ok with the 4,7k resistors right? So no harm to the arduino?

Thanks in advance!

This is the setup:

circuit
circuit1120×460 21.2 KB

3

Yes, no problem.

1 Like
4

So it's a "powerbank"?

5

no its a phone charger :slight_smile:

6

Then it's not 1500maH.

That would be the capacity of a powerbank.

Maybe you meant 1500mA?

7

sorry!

youre right! :slight_smile:

8

1500mA should be enough for your Nano, LEDs and DFplayer Mini.

10

ok cool! Could you please draw me in the wires that I need to connect?
I mean the power wires

11

no there are 12 led with 1k and the rest is 5k resistors

12

Stand alone circuit (19xLEDs) sharing the power supply.

13

Yes, but all but one are pots with the wipers not connected. Perhaps they are meant to be ordinary pots. Apparently 12 are 1K and the others are 5K.

@wipeoutpilot82 what colours are these LEDs? Why have you used different value resistors for some of them?

14

these are smd led 0805 with 1k resistors and 1204 smd led with 5k resistors to let them glow only a little bit(used for little outdoor lanterns)

15

Ok, don't answer my questions. Good luck.

16

@wipeoutpilot82
Color of each LED?

17

sorry!

Didnt read your question carefully!
The smds are warm white. All of them.

The Leds on the arduino are 5mm 25000cmd bright white LEDs

18

Did you tested them with 5k resistor?
Your LEDs are ranked for 30mA current, with 5k resistor the current will be less than 1mA. I m afraid the LEDs won't lights at all.

In any case, I don't see a point to buy a bright LEDs and then to use it with about of one percent of it's power.

19

I assume the LEDs are lighting, and the purpose is: expanding to more, directly connected LEDs (presently, 6 LEDs * 20mA = 120mA... plus a DFPlayerMini). The goal seems to be "how to power LED circuits controlled by Uno" with the 5vdc phone charger power supply, (I am adding; perhaps with BJT or MOSFET driver circuits, or ULN2803).

20

yes they are still bright! Without the 5k resistor they are bright like the sun....

21

Ok I think I will use a usb splitter with 3 ports and then I can connect all 3 things separetely but with one power suply.

22

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