How to drive 100led from arduno

[GihanAsanka]

Hi


I would like to know how to run 100 LED bulb from Arduno Uno board..

I wrote program to Arduno Uno for get 5 out put from board.
it's working properly. when I connect C828 And D400 Driver cc't to run 100nos led from each channel. but no action from transistor. (Those transistar are new. )

please anyone help me .

Thanks

[Himash]

When you run out of pins on your arduino board !,
The easy and simple way to the extension is use 595 chip !
https://www.arduino.cc/en/Tutorial/ShiftOut

[TRONICLK]

Hi Gihan, First I need to understand more about how you have connected the LEDs. Can you post a drawing please. You need to mention input voltage for LEDs as well. I might suggest you to move to a darlington or better to a FET, but before all that, I need the circuit diagram to understand.

[GihanAsanka]

IMG_20181122_075507~2.jpg (536.54 KiB) Viewed 34382 times

Now i'm attaching my diagram

[TRONICLK]

Hi Gihan,

Your digram explains the issue very well. Basically it is not correct. Consider following options. Logic Level FET one is my favourite.

NOTE: D4 and D2 LED symbol represent a LED set (series/parallel) which requires 12V.

1. Transistor switching

Transistor.JPG (53.72 KiB) Viewed 34375 times

2. FET Switching

FET.JPG (47.34 KiB) Viewed 34375 times

I used 2N3904, but you can use C828 and D400. Use C828 to connect to Arduino side.

IRLR110 is one of my favourite logic level FETs. I have made it available in TRONIC.LK. You can find it in the following link.
https://tronic.lk/product/irlr110-n-cha ... wer-mosfet

[GihanAsanka]

Thanks for advice .
Happy to inform to you I connect 2nos of NOT gate
with Arduno out put and also connected two GND line
together.. It works. but I think D400 is not enough
power to my project.

[TRONICLK]

You better consider using FETs for these high voltage switching purposes. Or else you can use Darlintons such as TIP series.