Driving 24V LED with arduino

Other Hardware General Electronics
1

Greetings.

I have a question i cannot seem to get an anwser to. So i have 10 24V LEDs. Here is a link:

https://www.aliexpress.com/item/32893389611.html?spm=a2g0o.productlist.0.0.42d543fbL3kCD0&algo_pvid=9c61f9a8-d3c2-4dc2-9771-d15be26700f5&algo_expid=9c61f9a8-d3c2-4dc2-9771-d15be26700f5-34&btsid=0ab50f6215881503645153531e7eb3&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

I would like to control them (they should be blinking) with a Arduino Mega that i have...but i dont know what a proper circuit would be...MOSFETs would be a good idea but all i see on the internet is people using them for LED strips...I however would like to drive each 24V LED from a different ouptut pit.
Thank you for your help experts!

2

Have a look at

TypicalOutputs.jpg
TypicalOutputs.jpg1867×1380 496 KB

The closest on there to what you want is Q3, replace the relay with your LEDs and power from 24V.

TypicalOutputs.jpg
TypicalOutputs.jpg1867×1380 496 KB

3

Hi,
OPs LEDs.

ledcar.jpg
ledcar.jpg1100×616 95.7 KB

24V LED Bulb Car Auto Front Lights 1156 22SMD P21W BA15S Brake Lights Lights Turn Lights Parrking Lamp Bulb 12V

Specifications:

  1. Voltage: 24V DC
  2. Socket: BA15S
  3. LED: SMD
  4. Spec: P21W 1156/1157 22SMD
  5. Led Type: 3014 Chips
  6. Wattage: 3W
  7. Angle of light: 180 degree
  8. Color: White Red Yellow Green Blue Pink
  9. Life Time: about 50,000 hours
  10. Top Quality
  11. Easy to Install
  12. Long service life time.

Package:
2 x LED bulb

Tom.. :slight_smile:

ledcar.jpg
ledcar.jpg1100×616 95.7 KB

4

Ok so 24V to the positive rail of LED, negative rail from the LED to drain, 220R resistor to the gate and sink to GND should simply do the trick? Should i have a heat sink on the mosfets? The wattage is small though?
Thank you for your help!!

5

xcg584:
Ok so 24V to the positive rail of LED, negative rail from the LED to drain, 220R resistor to the gate and sink to GND should simply do the trick? Should i have a heat sink on the mosfets? The wattage is small though?
Thank you for your help!!

That's about right. You should not need a heatsink.

6

Thank you very much for the help!!