How to connect rgb led parallal with arduino

Using Arduino LEDs and Multiplexing
1

I have an arduino nano and i want to connect around 30 rgb led with common anode parallaly with it.what code and what circuit should i choose?

2

Use ws2812 or apa106 LEDs.

3

How much current does the string of LEDs require when displaying white ?

I ask because an Arduino pin can only supply a limited current so you would require a transistor or MOSFET connected to the Arduino pin and use it to switch an external power source

4

How to measure the current?

5

Either measure it with a multimeter or read the datasheet for the LEDs

6

Do you have a data sheet for the LED or a link to a webpage for the LED?

7

I bought it from online

8

Please post a link to where you bought it

9
10

From the link that you posted

  • Forward Voltage / Direct Current : DC 3 Volt 20 mA (Red Color is 2 Volt 20 mA)

So you see straight away the the LEDs cannot be driven directly from an Arduino pin

11

You would need 3 MOSFETs and 96 resistors to do what you want.
Can you actually build that?

12

Actually i needed to parallaly connect about 48 leds :sweat_smile:

13

Then you will need around 150 resistors and 3 MOSFETs and a lot of time to solder together a protoboard.

14

Hi, @kumaresh869

What is your project?

How will you set out the LEDs?

Thanks.. Tom.. :smiley: :+1: :coffee: :australia:

16

I want to make a light tree just like this:

IMG_20240714_095324
IMG_20240714_0953241920×2550 351 KB

I want to replace the blue leds with the rgb leds. The whole tree is in parallal combination other than the branches which are in series combination.

17

Hello kumaresh869

Take a view to get some ideas:

18

This led will become to big for the project i want to do

1 Like
19

please use a word "parallel"

20

Sorry my mistake

21

Can u tell me what arrangements i require for my project above👆