How to drive 100led from arduno

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GihanAsanka
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How to drive 100led from arduno

Post by GihanAsanka » Wed Nov 21, 2018 7:30 pm

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
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Himash
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Re: How to drive 100led from arduno

Post by Himash » Wed Nov 21, 2018 9:26 pm

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
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TRONICLK
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Re: How to drive 100led from arduno

Post by TRONICLK » Thu Nov 22, 2018 3:56 am

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.
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Re: How to drive 100led from arduno

Post by GihanAsanka » Thu Nov 22, 2018 11:05 am

IMG_20181122_075507~2.jpg
IMG_20181122_075507~2.jpg (536.54 KiB) Viewed 30908 times

Now i'm attaching my diagram
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TRONICLK
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Re: How to drive 100led from arduno

Post by TRONICLK » Thu Nov 22, 2018 7:21 pm

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
Transistor.JPG (53.72 KiB) Viewed 30901 times
2. FET Switching
FET.JPG
FET.JPG (47.34 KiB) Viewed 30901 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
TRONIC.LK - The Electronic Store for Makers
GihanAsanka
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Re: How to drive 100led from arduno

Post by GihanAsanka » Fri Nov 23, 2018 7:51 am

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.
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Re: How to drive 100led from arduno

Post by TRONICLK » Sun Nov 25, 2018 12:04 am

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